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From lburgazz...@apache.org
Subject [07/19] camel git commit: CAMEL-11550: Component extensions
Date Fri, 04 Aug 2017 16:09:58 GMT
CAMEL-11550: Component extensions


Project: http://git-wip-us.apache.org/repos/asf/camel/repo
Commit: http://git-wip-us.apache.org/repos/asf/camel/commit/42529399
Tree: http://git-wip-us.apache.org/repos/asf/camel/tree/42529399
Diff: http://git-wip-us.apache.org/repos/asf/camel/diff/42529399

Branch: refs/heads/master
Commit: 4252939938f6603080fb8adda750872a8001a74b
Parents: f347292
Author: lburgazzoli <lburgazzoli@gmail.com>
Authored: Tue Jul 18 18:47:28 2017 +0200
Committer: lburgazzoli <lburgazzoli@gmail.com>
Committed: Fri Aug 4 18:09:04 2017 +0200

----------------------------------------------------------------------
 .../main/java/org/apache/camel/Component.java   |  25 ++
 .../java/org/apache/camel/ComponentAware.java   |  61 +++
 .../org/apache/camel/ComponentVerifier.java     | 361 +----------------
 .../camel/ComponentVerifierException.java       |  34 --
 .../apache/camel/ComponentVerifierHelper.java   | 140 -------
 .../apache/camel/IllegalOptionException.java    |  39 --
 .../org/apache/camel/NoSuchOptionException.java |  29 --
 .../org/apache/camel/VerifiableComponent.java   |   3 +
 .../component/extension/ComponentExtension.java |  26 ++
 .../extension/ComponentExtensionHelper.java     |  43 +++
 .../extension/ComponentVerifierExtension.java   | 385 +++++++++++++++++++
 .../component/extension/MetaDataExtension.java  |  74 ++++
 .../metadata/AbstractMetaDataExtension.java     |  65 ++++
 .../extension/metadata/DefaultMetaData.java     |  63 +++
 .../extension/metadata/MetaDataBuilder.java     |  64 +++
 .../component/extension/metadata/package.html   |  25 ++
 .../camel/component/extension/package.html      |  25 ++
 .../verifier/CatalogVerifierCustomizer.java     | 104 +++++
 .../verifier/ComponentVerifierException.java    |  36 ++
 .../ComponentVerifierExtensionHelper.java       | 145 +++++++
 .../DefaultComponentVerifierExtension.java      | 214 +++++++++++
 .../extension/verifier/DefaultResult.java       |  57 +++
 .../DefaultResultVerificationError.java         |  66 ++++
 .../verifier/IllegalOptionException.java        |  39 ++
 .../verifier/NoSuchOptionException.java         |  29 ++
 .../extension/verifier/OptionsGroup.java        | 142 +++++++
 .../extension/verifier/ResultBuilder.java       | 141 +++++++
 .../extension/verifier/ResultErrorBuilder.java  | 213 ++++++++++
 .../extension/verifier/ResultErrorHelper.java   | 164 ++++++++
 .../component/extension/verifier/package.html   |  25 ++
 .../camel/component/rest/RestComponent.java     |  12 +-
 .../component/rest/RestComponentVerifier.java   | 152 --------
 .../rest/RestComponentVerifierExtension.java    | 151 ++++++++
 .../org/apache/camel/impl/DefaultComponent.java |  36 ++
 .../verifier/CatalogVerifierCustomizer.java     | 104 -----
 .../impl/verifier/DefaultComponentVerifier.java | 202 ----------
 .../camel/impl/verifier/DefaultResult.java      |  57 ---
 .../DefaultResultVerificationError.java         |  66 ----
 .../camel/impl/verifier/OptionsGroup.java       | 142 -------
 .../camel/impl/verifier/ResultBuilder.java      | 143 -------
 .../camel/impl/verifier/ResultErrorBuilder.java | 213 ----------
 .../camel/impl/verifier/ResultErrorHelper.java  | 164 --------
 .../management/mbean/ManagedComponent.java      |   5 +-
 .../apache/camel/util/CamelContextHelper.java   |   2 +-
 .../org/apache/camel/ComponentVerifierTest.java |  66 ----
 .../verifier/ComponentVerifierTest.java         |  66 ++++
 .../RestComponentVerifierExtensionTest.java     | 141 +++++++
 .../rest/RestComponentVerifierTest.java         |  32 +-
 .../verifier/DefaultComponentVerifierTest.java  |  23 +-
 .../impl/verifier/ResultErrorHelperTest.java    |   9 +-
 .../camel/management/ManagedComponentTest.java  |   6 +-
 .../camel/component/http/HttpComponent.java     |  11 +-
 .../component/http/HttpComponentVerifier.java   | 250 ------------
 .../http/HttpComponentVerifierExtension.java    | 246 ++++++++++++
 .../http/CamelComponentVerifierTest.java        | 192 ---------
 .../HttpComponentVerifierExtensionTest.java     | 151 ++++++++
 .../http/HttpComponentVerifierTest.java         | 150 ++++++++
 .../camel/component/http4/HttpComponent.java    |  11 +-
 .../component/http4/HttpComponentVerifier.java  | 250 ------------
 .../http4/HttpComponentVerifierExtension.java   | 248 ++++++++++++
 .../CamelComponentVerifierExtensionTest.java    | 263 +++++++++++++
 .../http4/CamelComponentVerifierTest.java       |  43 ++-
 .../salesforce/SalesforceComponent.java         |   7 +-
 .../salesforce/SalesforceComponentVerifier.java | 204 ----------
 .../SalesforceComponentVerifierExtension.java   | 205 ++++++++++
 ...alesforceComponentVerifierExtensionTest.java | 183 +++++++++
 .../SalesforceComponentVerifierTest.java        |  27 +-
 .../servicenow/ServiceNowComponent.java         |  37 +-
 .../servicenow/ServiceNowComponentVerifier.java | 113 ------
 .../ServiceNowComponentVerifierExtension.java   | 112 ++++++
 ...erviceNowComponentVerifierExtensionTest.java | 151 ++++++++
 .../ServiceNowComponentVerifierTest.java        |  32 +-
 .../twitter/AbstractTwitterComponent.java       |  17 +-
 .../DefaultTwitterComponentVerifier.java        |  95 -----
 .../component/twitter/TwitterComponent.java     |  18 +-
 .../TwitterComponentVerifierExtension.java      |  94 +++++
 .../TwitterDirectMessageComponent.java          |  19 +-
 .../twitter/search/TwitterSearchComponent.java  |  20 +-
 .../streaming/TwitterStreamingComponent.java    |  19 +-
 .../timeline/TwitterTimelineComponent.java      |  18 +-
 .../AbstractComponentVerifierExtensionTest.java |  82 ++++
 .../twitter/AbstractComponentVerifierTest.java  |  81 ++++
 .../twitter/CamelComponentVerifierTest.java     | 123 ------
 .../TwitterComponentVerifierExtensionTest.java  |  24 ++
 .../twitter/TwitterComponentVerifierTest.java   |  24 ++
 ...ctmessageComponentVerifierExtensionTest.java |  26 ++
 ...itterDirectmessageComponentVerifierTest.java |  26 ++
 ...terSearchComponentVerifierExtensionTest.java |  72 ++++
 .../TwitterSearchComponentVerifierTest.java     |  72 ++++
 ...StreamingComponentVerifierExtensionTest.java |  26 ++
 .../TwitterStreamingComponentVerifierTest.java  |  26 ++
 ...rTimelineComponentVerifierExtensionTest.java |  26 ++
 .../TwitterTimelineComponentVerifierTest.java   |  26 ++
 .../component/undertow/UndertowComponent.java   |  10 +-
 .../undertow/UndertowComponentVerifier.java     | 239 ------------
 .../UndertowComponentVerifierExtension.java     | 236 ++++++++++++
 .../UndertowComponentVerifierExtensionTest.java | 104 +++++
 .../SpringBootAutoConfigurationMojo.java        |   2 +-
 .../connector/DefaultConnectorComponent.java    |  28 +-
 99 files changed, 5515 insertions(+), 3553 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/Component.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/Component.java b/camel-core/src/main/java/org/apache/camel/Component.java
index d873470..b21e7a4 100644
--- a/camel-core/src/main/java/org/apache/camel/Component.java
+++ b/camel-core/src/main/java/org/apache/camel/Component.java
@@ -16,6 +16,12 @@
  */
 package org.apache.camel;
 
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Optional;
+
+import org.apache.camel.component.extension.ComponentExtension;
+
 /**
  * A <a href="http://camel.apache.org/component.html">component</a> is
  * a factory of {@link Endpoint} objects.
@@ -73,4 +79,23 @@ public interface Component extends CamelContextAware {
      */
     @Deprecated
     ComponentConfiguration createComponentConfiguration();
+
+    /**
+     * Gets a list of supported extensions.
+     *
+     * @return the list of extensions.
+     */
+    default Collection<Class<? extends ComponentExtension>> getSupportedExtensions() {
+        return Collections.emptyList();
+    }
+
+    /**
+     * Gets the extension of the given type.
+     *
+     * @param extensionType tye type of the extensions
+     * @return an optional extension
+     */
+    default <T extends ComponentExtension> Optional<T> getExtension(Class<T> extensionType) {
+        return Optional.empty();
+    }
 }

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/ComponentAware.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/ComponentAware.java b/camel-core/src/main/java/org/apache/camel/ComponentAware.java
new file mode 100644
index 0000000..88f7a31
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/ComponentAware.java
@@ -0,0 +1,61 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel;
+
+/**
+ * An interface to represent an object which wishes to be injected with
+ * a {@link Component}.
+ */
+public interface ComponentAware {
+
+    /**
+     * Injects the {@link Component}
+     *
+     * @param component the component
+     */
+    void setComponent(Component component);
+
+    /**
+     * Get the {@link Component}
+     *
+     * @return the component
+     */
+    Component getComponent();
+
+    /**
+     * Get the {@link Component} as the specified type.
+     *
+     * @param type the proprietary class or interface of the underlying concrete Component.
+     * @return an instance of the underlying concrete Component as the required type.
+     * @throws IllegalArgumentException if the component class can't be cast to required type,
+     */
+    default <T extends Component> T getComponent(Class<T> type) {
+        final Component component = getComponent();
+
+        if (component == null) {
+            return null;
+        }
+
+        if (Component.class.isAssignableFrom(type)) {
+            return type.cast(component);
+        }
+
+        throw new IllegalArgumentException(
+            "Unable to unwrap the Component type (" + component.getClass() + ") to the required type (" + type + ")"
+        );
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/ComponentVerifier.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/ComponentVerifier.java b/camel-core/src/main/java/org/apache/camel/ComponentVerifier.java
index bcbda7c..d95a7e7 100644
--- a/camel-core/src/main/java/org/apache/camel/ComponentVerifier.java
+++ b/camel-core/src/main/java/org/apache/camel/ComponentVerifier.java
@@ -16,14 +16,9 @@
  */
 package org.apache.camel;
 
-import java.io.Serializable;
-import java.util.List;
 import java.util.Map;
-import java.util.Set;
 
-import org.apache.camel.ComponentVerifierHelper.ExceptionErrorAttribute;
-import org.apache.camel.impl.verifier.ResultErrorBuilder;
-import org.apache.camel.util.ObjectHelper;
+import org.apache.camel.component.extension.ComponentVerifierExtension;
 
 /**
  * Defines the interface used for validating component/endpoint parameters. The central method of this
@@ -31,356 +26,8 @@ import org.apache.camel.util.ObjectHelper;
  * <p/>
  * The return value is a {@link Result} of the verification
  *
+ * @deprecated use {@link ComponentVerifierExtension}
  */
-public interface ComponentVerifier {
-
-    /**
-     * Verify the given parameters against a provided scope.
-     *
-     * <p>
-     * The supported scopes are:
-     * <ul>
-     *   <li><strong>{@link Scope#PARAMETERS}</strong>: to validate that all the mandatory options are provided and syntactically correct.</li>
-     *   <li><strong>{@link Scope#CONNECTIVITY}</strong>: to validate that the given options (i.e. credentials, addresses) are correct. Verifying with this
-     *       scope typically implies reaching out to the backend via some sort of network connection.</li>
-     * </ul>
-     *
-     * @param scope the scope of the verification
-     * @param parameters the parameters to verify which are interpreted individually by each component verifier
-     * @return the verification result
-     */
-    Result verify(Scope scope, Map<String, Object> parameters);
-
-    /**
-     * The result of a verification
-     */
-    interface Result extends Serializable {
-
-        /**
-         * Status of the verification
-         */
-        enum Status {
-            /**
-             * Verification succeeded
-             */
-            OK,
-            /**
-             * Error occurred during the verification
-             */
-            ERROR,
-            /**
-             * Verification is not supported. This can depend on the given scope.
-             */
-            UNSUPPORTED
-        }
-
-        /**
-         * Scope of the verification. This is the scope given to the call to {@link #verify(Scope, Map)}  and
-         * can be used for correlation.
-         *
-         * @return the scope against which the parameters have been validated.
-         */
-        Scope getScope();
-
-        /**
-         * Result of the validation as status. This should be the first datum to check after a verification
-         * happened.
-         *
-         * @return the status
-         */
-        Status getStatus();
-
-        /**
-         * Collection of errors happened for the verification. This list is empty (but non null) if the verification
-         * succeeded.
-         *
-         * @return a list of errors. Can be empty when verification was successful
-         */
-        List<VerificationError> getErrors();
-    }
-
-    /**
-     * The scope defines how the parameters should be verified.
-     */
-    enum Scope {
-        /**
-         * Only validate the parameters for their <em>syntactic</em> soundness. Verifications in this scope should
-         * be as fast as possible
-         */
-        PARAMETERS,
-
-        /**
-         * Reach out to the backend and verify that a connection can be established. This means, if the verification
-         * in this scope succeeds, then it can safely be assumed that the component can be used.
-         */
-        CONNECTIVITY;
-
-        private static final Scope[] VALUES = values();
-
-        /**
-         * Get an instance of this scope from a string representation
-         *
-         * @param scope the scope as string, which can be in any case
-         * @return the scope enum represented by this string
-         */
-        public static Scope fromString(String scope) {
-            for (Scope value : VALUES) {
-                if (ObjectHelper.equal(scope, value.name(), true)) {
-                    return value;
-                }
-            }
-            throw new IllegalArgumentException("Unknown scope <" + scope + ">");
-        }
-    }
-
-    // =============================================================================================
-
-    /**
-     * This interface represents a detailed error in case when the verification fails.
-     */
-    interface VerificationError extends Serializable {
-
-        /**
-         * The overall error code, which can be either a {@link StandardCode} or a custom code. It is
-         * recommended to stick to the predefined standard codes
-         *
-         * @return the general error code.
-         */
-        Code getCode();
-
-        /**
-         * A human readable description of the error in plain english
-         *
-         * @return the error description (if available)
-         */
-        String getDescription();
-
-        /**
-         * A set of input parameter names which fails the verification. These are keys to the parameter provided
-         * to {@link #verify(Scope, Map)}.
-         *
-         * @return the parameter names which are malformed and caused the failure of the validation
-         */
-        Set<String> getParameterKeys();
-
-        /**
-         * Details about the failed verification. The keys can be either predefined values
-         * ({@link ExceptionAttribute}, {@link HttpAttribute}, {@link GroupAttribute}) or it can be free-form
-         * custom keys specific to a component. The standard attributes are defined as enums in all uppercase (with
-         * underscore as separator), custom attributes are supposed to be in all lower case (also with underscores
-         * as separators)
-         *
-         * @return a number of key/value pair with additional information related to the verification.
-         */
-        Map<Attribute, Object> getDetails();
-
-        /**
-         * Get a single detail for a given attribute
-         *
-         * @param attribute the attribute to lookup
-         * @return the detail value or null if no such attribute exists
-         */
-        default Object getDetail(Attribute attribute) {
-            Map<Attribute, Object> details = getDetails();
-            if (details != null) {
-                return details.get(attribute);
-            }
-            return null;
-        }
-
-        /**
-         * Get a single detail for a given attribute
-         *
-         * @param attribute the attribute to lookup
-         * @return the detail value or null if no such attribute exists
-         */
-        default Object getDetail(String attribute) {
-            return getDetail(asAttribute(attribute));
-        }
-
-        /**
-         * Convert a string to an {@link Code}
-         *
-         * @param code the code to convert. It should be in all lower case (with
-         *             underscore as a separator) to avoid overlap with {@link StandardCode}
-         * @return error code
-         */
-        static Code asCode(String code) {
-            return new ComponentVerifierHelper.ErrorCode(code);
-        }
-
-        /**
-         * Convert a string to an {@link Attribute}
-         *
-         * @param attribute the string representation of an attribute to convert. It should be in all lower case (with
-         *                  underscore as a separator) to avoid overlap with standard attributes like {@link ExceptionAttribute},
-         *                  {@link HttpAttribute} or {@link GroupAttribute}
-         * @return generated attribute
-         */
-        static Attribute asAttribute(String attribute) {
-            return new ComponentVerifierHelper.ErrorAttribute(attribute);
-        }
-
-        /**
-         * Interface defining an error code. This is implemented by the {@link StandardCode} but also
-         * own code can be generated by implementing this interface. This is best done via {@link #asCode(String)}
-         * If possible, the standard codes should be reused
-         */
-        interface Code extends Serializable {
-            /**
-             * Name of the code. All uppercase for standard codes, all lower case for custom codes.
-             * Separator between two words is an underscore.
-             *
-             * @return code name
-             */
-            String name();
-
-            /**
-             * Bean style accessor to name.
-             * This is required for framework like Jackson using bean convention for object serialization.
-             *
-             * @return code name
-             */
-            default String getName() {
-                return name();
-            }
-        }
-
-        /**
-         * Standard set of error codes
-         */
-        interface StandardCode extends Code {
-            /**
-             * Authentication failed
-             */
-            StandardCode AUTHENTICATION = new ComponentVerifierHelper.StandardErrorCode("AUTHENTICATION");
-            /**
-             * An exception occurred
-             */
-            StandardCode EXCEPTION = new ComponentVerifierHelper.StandardErrorCode("EXCEPTION");
-            /**
-             * Internal error while performing the verification
-             */
-            StandardCode INTERNAL = new ComponentVerifierHelper.StandardErrorCode("INTERNAL");
-            /**
-             * A mandatory parameter is missing
-             */
-            StandardCode MISSING_PARAMETER = new ComponentVerifierHelper.StandardErrorCode("MISSING_PARAMETER");
-            /**
-             * A given parameter is not known to the component
-             */
-            StandardCode UNKNOWN_PARAMETER = new ComponentVerifierHelper.StandardErrorCode("UNKNOWN_PARAMETER");
-            /**
-             * A given parameter is illegal
-             */
-            StandardCode ILLEGAL_PARAMETER = new ComponentVerifierHelper.StandardErrorCode("ILLEGAL_PARAMETER");
-            /**
-             * A combination of parameters is illegal. See {@link VerificationError#getParameterKeys()} for the set
-             * of affected parameters
-             */
-            StandardCode ILLEGAL_PARAMETER_GROUP_COMBINATION = new ComponentVerifierHelper.StandardErrorCode("ILLEGAL_PARAMETER_GROUP_COMBINATION");
-            /**
-             * A parameter <em>value</em> is not valid
-             */
-            StandardCode ILLEGAL_PARAMETER_VALUE = new ComponentVerifierHelper.StandardErrorCode("ILLEGAL_PARAMETER_VALUE");
-            /**
-             * A group of parameters is not complete in order to be valid
-             */
-            StandardCode INCOMPLETE_PARAMETER_GROUP = new ComponentVerifierHelper.StandardErrorCode("INCOMPLETE_PARAMETER_GROUP");
-            /**
-             * The verification is not supported
-             */
-            StandardCode UNSUPPORTED = new ComponentVerifierHelper.StandardErrorCode("UNSUPPORTED");
-            /**
-             * The requested {@link Scope} is not supported
-             */
-            StandardCode UNSUPPORTED_SCOPE = new ComponentVerifierHelper.StandardErrorCode("UNSUPPORTED_SCOPE");
-            /**
-             * The requested {@link Component} is not supported
-             */
-            StandardCode UNSUPPORTED_COMPONENT = new ComponentVerifierHelper.StandardErrorCode("UNSUPPORTED_COMPONENT");
-            /**
-             * Generic error which is explained in more details with {@link VerificationError#getDetails()}
-             */
-            StandardCode GENERIC = new ComponentVerifierHelper.StandardErrorCode("GENERIC");
-        }
-
-        /**
-         * Interface defining an attribute which is a key for the detailed error messages. This is implemented by several
-         * standard enums like {@link ExceptionAttribute}, {@link HttpAttribute} or {@link GroupAttribute} but can also
-         * implemented for component specific details. This is best done via {@link #asAttribute(String)}
-         * or using one of the other builder method in this error builder (like {@link ResultErrorBuilder#detail(String, Object)}
-         * <p>
-         * With respecting to name, the same rules as for {@link Code} apply: Standard attributes are all upper case with _
-         * as separators, whereas custom attributes are lower case with underscore separators.
-         */
-        interface Attribute extends Serializable {
-            /**
-             * Name of the attribute. All uppercase for standard attributes and all lower case for custom attributes.
-             * Separator between words is an underscore.
-             *
-             * @return attribute name
-             */
-            String name();
-
-            /**
-             * Bean style accessor to name;
-             * This is required for framework like Jackson using bean convention for object serialization.
-             *
-             * @return attribute name
-             */
-            default String getName() {
-                return name();
-            }
-        }
-
-        /**
-         * Attributes for details about an exception that was raised
-         */
-        interface ExceptionAttribute extends Attribute {
-            /**
-             * The exception object that has been thrown. Note that this can be a complex
-             * object and can cause large content when e.g. serialized as JSON
-             */
-            ExceptionAttribute EXCEPTION_INSTANCE = new ExceptionErrorAttribute("EXCEPTION_INSTANCE");
-            /**
-             * The exception class
-             */
-            ExceptionAttribute EXCEPTION_CLASS = new ExceptionErrorAttribute("EXCEPTION_CLASS");
-        }
-
-        /**
-         * HTTP related error details
-         */
-        interface HttpAttribute extends Attribute {
-            /**
-             * The erroneous HTTP code that occurred
-             */
-            HttpAttribute HTTP_CODE = new ComponentVerifierHelper.HttpErrorAttribute("HTTP_CODE");
-            /**
-             * HTTP response's body
-             */
-            HttpAttribute HTTP_TEXT = new ComponentVerifierHelper.HttpErrorAttribute("HTTP_TEXT");
-            /**
-             * If given as details, specifies that a redirect happened and the
-             * content of this detail is the redirect URL
-             */
-            HttpAttribute HTTP_REDIRECT = new ComponentVerifierHelper.HttpErrorAttribute("HTTP_REDIRECT");
-        }
-
-        /**
-         * Group related details
-         */
-        interface GroupAttribute extends Attribute {
-            /**
-             * Group name
-             */
-            GroupAttribute GROUP_NAME = new ComponentVerifierHelper.GroupErrorAttribute("GROUP_NAME");
-            /**
-             * Options for the group
-             */
-            GroupAttribute GROUP_OPTIONS = new ComponentVerifierHelper.GroupErrorAttribute("GROUP_OPTIONS");
-        }
-    }
-
+@Deprecated
+public interface ComponentVerifier extends ComponentVerifierExtension {
 }

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/ComponentVerifierException.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/ComponentVerifierException.java b/camel-core/src/main/java/org/apache/camel/ComponentVerifierException.java
deleted file mode 100644
index 358498b..0000000
--- a/camel-core/src/main/java/org/apache/camel/ComponentVerifierException.java
+++ /dev/null
@@ -1,34 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.camel;
-
-public class ComponentVerifierException extends CamelException {
-    public ComponentVerifierException() {
-    }
-
-    public ComponentVerifierException(String message) {
-        super(message);
-    }
-
-    public ComponentVerifierException(String message, Throwable cause) {
-        super(message, cause);
-    }
-
-    public ComponentVerifierException(Throwable cause) {
-        super(cause);
-    }
-}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/ComponentVerifierHelper.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/ComponentVerifierHelper.java b/camel-core/src/main/java/org/apache/camel/ComponentVerifierHelper.java
deleted file mode 100644
index 7fc8115..0000000
--- a/camel-core/src/main/java/org/apache/camel/ComponentVerifierHelper.java
+++ /dev/null
@@ -1,140 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.camel;
-
-import org.apache.camel.ComponentVerifier.VerificationError.Attribute;
-import org.apache.camel.ComponentVerifier.VerificationError.Code;
-
-/**
- * Package visible helper class holding implementation classes for
- * constant like error code and attributes in {@link ComponentVerifier.VerificationError}
- */
-class ComponentVerifierHelper {
-
-    /**
-     * Custom class for error codes
-     */
-    static class ErrorCode implements Code {
-
-        private final String name;
-
-        ErrorCode(String name) {
-            if (name == null) {
-                throw new IllegalArgumentException("Name of an error code must not be null");
-            }
-            this.name = name;
-        }
-
-        @Override
-        public String name() {
-            return name;
-        }
-
-        @Override
-        public boolean equals(Object o) {
-            if (this == o) {
-                return true;
-            }
-            if (!(o instanceof Code)) {
-                return false;
-            }
-
-            Code errorCode = (Code) o;
-
-            return name.equals(errorCode.name());
-        }
-
-        @Override
-        public int hashCode() {
-            return name.hashCode();
-        }
-
-        @Override
-        public String toString() {
-            return name();
-        }
-    }
-
-    static class ErrorAttribute implements Attribute {
-
-        private final String name;
-
-        ErrorAttribute(String name) {
-            if (name == null) {
-                throw new IllegalArgumentException("Name of an error attribute must not be null");
-            }
-            this.name = name;
-        }
-
-        @Override
-        public String name() {
-            return name;
-        }
-
-
-        @Override
-        public boolean equals(Object o) {
-            if (this == o) {
-                return true;
-            }
-            if (!(o instanceof Attribute)) {
-                return false;
-            }
-
-            Attribute that = (Attribute) o;
-
-            return name.equals(that.name());
-        }
-
-        @Override
-        public int hashCode() {
-            return name.hashCode();
-        }
-
-        @Override
-        public String toString() {
-            return name();
-        }
-    }
-
-    // ===========================================================================================================
-    // Helper classes for implementing the constants in ComponentVerifier:
-
-    static class StandardErrorCode extends ErrorCode implements ComponentVerifier.VerificationError.StandardCode {
-        StandardErrorCode(String name) {
-            super(name);
-        }
-    }
-
-    static class ExceptionErrorAttribute extends ErrorAttribute implements ComponentVerifier.VerificationError.ExceptionAttribute {
-        ExceptionErrorAttribute(String name) {
-            super(name);
-        }
-    }
-
-    static class HttpErrorAttribute extends ErrorAttribute implements ComponentVerifier.VerificationError.HttpAttribute {
-        HttpErrorAttribute(String name) {
-            super(name);
-        }
-    }
-
-    static class GroupErrorAttribute extends ErrorAttribute implements ComponentVerifier.VerificationError.GroupAttribute {
-        GroupErrorAttribute(String name) {
-            super(name);
-        }
-    }
-}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/IllegalOptionException.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/IllegalOptionException.java b/camel-core/src/main/java/org/apache/camel/IllegalOptionException.java
deleted file mode 100644
index 527eb9d..0000000
--- a/camel-core/src/main/java/org/apache/camel/IllegalOptionException.java
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.camel;
-
-public class IllegalOptionException extends ComponentVerifierException {
-    private final String optionName;
-    private final String optionValue;
-
-    public IllegalOptionException(String optionName) {
-        this(optionName, null);
-    }
-
-    public IllegalOptionException(String optionName, String optionValue) {
-        this.optionName = optionName;
-        this.optionValue = optionValue;
-    }
-
-    public String getOptionName() {
-        return optionName;
-    }
-
-    public String getOptionValue() {
-        return optionValue;
-    }
-}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/NoSuchOptionException.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/NoSuchOptionException.java b/camel-core/src/main/java/org/apache/camel/NoSuchOptionException.java
deleted file mode 100644
index 3f1d561..0000000
--- a/camel-core/src/main/java/org/apache/camel/NoSuchOptionException.java
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.camel;
-
-public class NoSuchOptionException extends ComponentVerifierException {
-    private final String optionName;
-
-    public NoSuchOptionException(String optionName) {
-        this.optionName = optionName;
-    }
-
-    public String getOptionName() {
-        return optionName;
-    }
-}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/VerifiableComponent.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/VerifiableComponent.java b/camel-core/src/main/java/org/apache/camel/VerifiableComponent.java
index 2b95404..2e2b6f6 100644
--- a/camel-core/src/main/java/org/apache/camel/VerifiableComponent.java
+++ b/camel-core/src/main/java/org/apache/camel/VerifiableComponent.java
@@ -18,7 +18,10 @@ package org.apache.camel;
 
 /**
  * An interface to represent an object which support validation
+ *
+ * @deprecated see {@link org.apache.camel.extension.ComponentExtension}
  */
+@Deprecated
 public interface VerifiableComponent {
     /**
      * Get the {@link ComponentVerifier}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/ComponentExtension.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/ComponentExtension.java b/camel-core/src/main/java/org/apache/camel/component/extension/ComponentExtension.java
new file mode 100644
index 0000000..8d90d31
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/ComponentExtension.java
@@ -0,0 +1,26 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension;
+
+/**
+ * Marker interface for component extensions.
+ * <p/>
+ * An extension is a feature provided by the component such as ComponentVerifier,
+ * ServiceMetaData.
+ */
+public interface ComponentExtension {
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/ComponentExtensionHelper.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/ComponentExtensionHelper.java b/camel-core/src/main/java/org/apache/camel/component/extension/ComponentExtensionHelper.java
new file mode 100644
index 0000000..3487b3c
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/ComponentExtensionHelper.java
@@ -0,0 +1,43 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.CamelContextAware;
+import org.apache.camel.Component;
+import org.apache.camel.ComponentAware;
+
+public final class ComponentExtensionHelper {
+    private ComponentExtensionHelper() {
+    }
+
+    public static <T> T trySetCamelContext(T object, CamelContext camelContext) {
+        if (object instanceof CamelContextAware) {
+            ((CamelContextAware) object).setCamelContext(camelContext);
+        }
+
+        return object;
+    }
+
+    public static <T> T trySetComponent(T object, Component component) {
+        if (object instanceof ComponentAware) {
+            ((ComponentAware) object).setComponent(component);
+        }
+
+        return object;
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/ComponentVerifierExtension.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/ComponentVerifierExtension.java b/camel-core/src/main/java/org/apache/camel/component/extension/ComponentVerifierExtension.java
new file mode 100644
index 0000000..f9acf0e
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/ComponentVerifierExtension.java
@@ -0,0 +1,385 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension;
+
+import java.io.Serializable;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.camel.Component;
+import org.apache.camel.component.extension.verifier.ComponentVerifierExtensionHelper;
+import org.apache.camel.component.extension.verifier.ResultErrorBuilder;
+import org.apache.camel.util.ObjectHelper;
+/**
+ * Defines the interface used for validating component/endpoint parameters. The central method of this
+ * interface is {@link #verify(ComponentVerifierExtension.Scope, Map)} which takes a scope and a set of parameters which should be verified.
+ * <p/>
+ * The return value is a {@link ComponentVerifierExtension.Result} of the verification
+ *
+ */
+public interface ComponentVerifierExtension extends ComponentExtension {
+
+    /**
+     * Verify the given parameters against a provided scope.
+     *
+     * <p>
+     * The supported scopes are:
+     * <ul>
+     *   <li><strong>{@link ComponentVerifierExtension.Scope#PARAMETERS}</strong>: to validate that all the mandatory options are provided and syntactically correct.</li>
+     *   <li><strong>{@link ComponentVerifierExtension.Scope#CONNECTIVITY}</strong>: to validate that the given options (i.e. credentials, addresses) are correct. Verifying with this
+     *       scope typically implies reaching out to the backend via some sort of network connection.</li>
+     * </ul>
+     *
+     * @param scope the scope of the verification
+     * @param parameters the parameters to verify which are interpreted individually by each component verifier
+     * @return the verification result
+     */
+    ComponentVerifierExtension.Result verify(ComponentVerifierExtension.Scope scope, Map<String, Object> parameters);
+
+    /**
+     * The result of a verification
+     */
+    interface Result extends Serializable {
+
+        /**
+         * Status of the verification
+         */
+        enum Status {
+            /**
+             * Verification succeeded
+             */
+            OK,
+            /**
+             * Error occurred during the verification
+             */
+            ERROR,
+            /**
+             * Verification is not supported. This can depend on the given scope.
+             */
+            UNSUPPORTED
+        }
+
+        /**
+         * Scope of the verification. This is the scope given to the call to {@link #verify(ComponentVerifierExtension.Scope, Map)}  and
+         * can be used for correlation.
+         *
+         * @return the scope against which the parameters have been validated.
+         */
+        ComponentVerifierExtension.Scope getScope();
+
+        /**
+         * Result of the validation as status. This should be the first datum to check after a verification
+         * happened.
+         *
+         * @return the status
+         */
+        ComponentVerifierExtension.Result.Status getStatus();
+
+        /**
+         * Collection of errors happened for the verification. This list is empty (but non null) if the verification
+         * succeeded.
+         *
+         * @return a list of errors. Can be empty when verification was successful
+         */
+        List<ComponentVerifierExtension.VerificationError> getErrors();
+    }
+
+    /**
+     * The scope defines how the parameters should be verified.
+     */
+    enum Scope {
+        /**
+         * Only validate the parameters for their <em>syntactic</em> soundness. Verifications in this scope should
+         * be as fast as possible
+         */
+        PARAMETERS,
+
+        /**
+         * Reach out to the backend and verify that a connection can be established. This means, if the verification
+         * in this scope succeeds, then it can safely be assumed that the component can be used.
+         */
+        CONNECTIVITY;
+
+        private static final ComponentVerifierExtension.Scope[] VALUES = values();
+
+        /**
+         * Get an instance of this scope from a string representation
+         *
+         * @param scope the scope as string, which can be in any case
+         * @return the scope enum represented by this string
+         */
+        public static ComponentVerifierExtension.Scope fromString(String scope) {
+            for (ComponentVerifierExtension.Scope value : VALUES) {
+                if (ObjectHelper.equal(scope, value.name(), true)) {
+                    return value;
+                }
+            }
+            throw new IllegalArgumentException("Unknown scope <" + scope + ">");
+        }
+    }
+
+    // =============================================================================================
+
+    /**
+     * This interface represents a detailed error in case when the verification fails.
+     */
+    interface VerificationError extends Serializable {
+
+        /**
+         * The overall error code, which can be either a {@link StandardCode} or a custom code. It is
+         * recommended to stick to the predefined standard codes
+         *
+         * @return the general error code.
+         */
+        Code getCode();
+
+        /**
+         * A human readable description of the error in plain english
+         *
+         * @return the error description (if available)
+         */
+        String getDescription();
+
+        /**
+         * A set of input parameter names which fails the verification. These are keys to the parameter provided
+         * to {@link #verify(ComponentVerifierExtension.Scope, Map)}.
+         *
+         * @return the parameter names which are malformed and caused the failure of the validation
+         */
+        Set<String> getParameterKeys();
+
+        /**
+         * Details about the failed verification. The keys can be either predefined values
+         * ({@link ExceptionAttribute}, {@link HttpAttribute}, {@link GroupAttribute}) or it can be free-form
+         * custom keys specific to a component. The standard attributes are defined as enums in all uppercase (with
+         * underscore as separator), custom attributes are supposed to be in all lower case (also with underscores
+         * as separators)
+         *
+         * @return a number of key/value pair with additional information related to the verification.
+         */
+        Map<ComponentVerifierExtension.VerificationError.Attribute, Object> getDetails();
+
+        /**
+         * Get a single detail for a given attribute
+         *
+         * @param attribute the attribute to lookup
+         * @return the detail value or null if no such attribute exists
+         */
+        default Object getDetail(ComponentVerifierExtension.VerificationError.Attribute attribute) {
+            Map<ComponentVerifierExtension.VerificationError.Attribute, Object> details = getDetails();
+            if (details != null) {
+                return details.get(attribute);
+            }
+            return null;
+        }
+
+        /**
+         * Get a single detail for a given attribute
+         *
+         * @param attribute the attribute to lookup
+         * @return the detail value or null if no such attribute exists
+         */
+        default Object getDetail(String attribute) {
+            return getDetail(asAttribute(attribute));
+        }
+
+        /**
+         * Convert a string to an {@link Code}
+         *
+         * @param code the code to convert. It should be in all lower case (with
+         *             underscore as a separator) to avoid overlap with {@link StandardCode}
+         * @return error code
+         */
+        static Code asCode(String code) {
+            return new ComponentVerifierExtensionHelper.ErrorCode(code);
+        }
+
+        /**
+         * Convert a string to an {@link Attribute}
+         *
+         * @param attribute the string representation of an attribute to convert. It should be in all lower case (with
+         *                  underscore as a separator) to avoid overlap with standard attributes like {@linkExceptionAttribute},
+         *                  {@linkHttpAttribute} or {@link GroupAttribute}
+         * @return generated attribute
+         */
+        static Attribute asAttribute(String attribute) {
+            return new ComponentVerifierExtensionHelper.ErrorAttribute(attribute);
+        }
+
+        /**
+         * Interface defining an error code. This is implemented by the {@link StandardCode} but also
+         * own code can be generated by implementing this interface. This is best done via {@link #asCode(String)}
+         * If possible, the standard codes should be reused
+         */
+        interface Code extends Serializable {
+            /**
+             * Name of the code. All uppercase for standard codes, all lower case for custom codes.
+             * Separator between two words is an underscore.
+             *
+             * @return code name
+             */
+            String name();
+
+            /**
+             * Bean style accessor to name.
+             * This is required for framework like Jackson using bean convention for object serialization.
+             *
+             * @return code name
+             */
+            default String getName() {
+                return name();
+            }
+        }
+
+        /**
+         * Standard set of error codes
+         */
+        interface StandardCode extends Code {
+            /**
+             * Authentication failed
+             */
+            StandardCode AUTHENTICATION = new ComponentVerifierExtensionHelper.StandardErrorCode("AUTHENTICATION");
+            /**
+             * An exception occurred
+             */
+            StandardCode EXCEPTION = new ComponentVerifierExtensionHelper.StandardErrorCode("EXCEPTION");
+            /**
+             * Internal error while performing the verification
+             */
+            StandardCode INTERNAL = new ComponentVerifierExtensionHelper.StandardErrorCode("INTERNAL");
+            /**
+             * A mandatory parameter is missing
+             */
+            StandardCode MISSING_PARAMETER = new ComponentVerifierExtensionHelper.StandardErrorCode("MISSING_PARAMETER");
+            /**
+             * A given parameter is not known to the component
+             */
+            StandardCode UNKNOWN_PARAMETER = new ComponentVerifierExtensionHelper.StandardErrorCode("UNKNOWN_PARAMETER");
+            /**
+             * A given parameter is illegal
+             */
+            StandardCode ILLEGAL_PARAMETER = new ComponentVerifierExtensionHelper.StandardErrorCode("ILLEGAL_PARAMETER");
+            /**
+             * A combination of parameters is illegal. See {@link ComponentVerifierExtension.VerificationError#getParameterKeys()} for the set
+             * of affected parameters
+             */
+            StandardCode ILLEGAL_PARAMETER_GROUP_COMBINATION = new ComponentVerifierExtensionHelper.StandardErrorCode("ILLEGAL_PARAMETER_GROUP_COMBINATION");
+            /**
+             * A parameter <em>value</em> is not valid
+             */
+            StandardCode ILLEGAL_PARAMETER_VALUE = new ComponentVerifierExtensionHelper.StandardErrorCode("ILLEGAL_PARAMETER_VALUE");
+            /**
+             * A group of parameters is not complete in order to be valid
+             */
+            StandardCode INCOMPLETE_PARAMETER_GROUP = new ComponentVerifierExtensionHelper.StandardErrorCode("INCOMPLETE_PARAMETER_GROUP");
+            /**
+             * The verification is not supported
+             */
+            StandardCode UNSUPPORTED = new ComponentVerifierExtensionHelper.StandardErrorCode("UNSUPPORTED");
+            /**
+             * The requested {@link ComponentVerifierExtension.Scope} is not supported
+             */
+            StandardCode UNSUPPORTED_SCOPE = new ComponentVerifierExtensionHelper.StandardErrorCode("UNSUPPORTED_SCOPE");
+            /**
+             * The requested {@link Component} is not supported
+             */
+            StandardCode UNSUPPORTED_COMPONENT = new ComponentVerifierExtensionHelper.StandardErrorCode("UNSUPPORTED_COMPONENT");
+            /**
+             * Generic error which is explained in more details with {@link ComponentVerifierExtension.VerificationError#getDetails()}
+             */
+            StandardCode GENERIC = new ComponentVerifierExtensionHelper.StandardErrorCode("GENERIC");
+        }
+
+        /**
+         * Interface defining an attribute which is a key for the detailed error messages. This is implemented by several
+         * standard enums like {@link ExceptionAttribute}, {@link HttpAttribute} or {@link GroupAttribute} but can also
+         * implemented for component specific details. This is best done via {@link #asAttribute(String)}
+         * or using one of the other builder method in this error builder (like {@link ResultErrorBuilder#detail(String, Object)}
+         * <p>
+         * With respecting to name, the same rules as for {@link Code} apply: Standard attributes are all upper case with _
+         * as separators, whereas custom attributes are lower case with underscore separators.
+         */
+        interface Attribute extends Serializable {
+            /**
+             * Name of the attribute. All uppercase for standard attributes and all lower case for custom attributes.
+             * Separator between words is an underscore.
+             *
+             * @return attribute name
+             */
+            String name();
+
+            /**
+             * Bean style accessor to name;
+             * This is required for framework like Jackson using bean convention for object serialization.
+             *
+             * @return attribute name
+             */
+            default String getName() {
+                return name();
+            }
+        }
+
+        /**
+         * Attributes for details about an exception that was raised
+         */
+        interface ExceptionAttribute extends Attribute {
+            /**
+             * The exception object that has been thrown. Note that this can be a complex
+             * object and can cause large content when e.g. serialized as JSON
+             */
+            ExceptionAttribute EXCEPTION_INSTANCE = new ComponentVerifierExtensionHelper.ExceptionErrorAttribute("EXCEPTION_INSTANCE");
+            /**
+             * The exception class
+             */
+            ExceptionAttribute EXCEPTION_CLASS = new ComponentVerifierExtensionHelper.ExceptionErrorAttribute("EXCEPTION_CLASS");
+        }
+
+        /**
+         * HTTP related error details
+         */
+        interface HttpAttribute extends Attribute {
+            /**
+             * The erroneous HTTP code that occurred
+             */
+            HttpAttribute HTTP_CODE = new ComponentVerifierExtensionHelper.HttpErrorAttribute("HTTP_CODE");
+            /**
+             * HTTP response's body
+             */
+            HttpAttribute HTTP_TEXT = new ComponentVerifierExtensionHelper.HttpErrorAttribute("HTTP_TEXT");
+            /**
+             * If given as details, specifies that a redirect happened and the
+             * content of this detail is the redirect URL
+             */
+            HttpAttribute HTTP_REDIRECT = new ComponentVerifierExtensionHelper.HttpErrorAttribute("HTTP_REDIRECT");
+        }
+
+        /**
+         * Group related details
+         */
+        interface GroupAttribute extends Attribute {
+            /**
+             * Group name
+             */
+            GroupAttribute GROUP_NAME = new ComponentVerifierExtensionHelper.GroupErrorAttribute("GROUP_NAME");
+            /**
+             * Options for the group
+             */
+            GroupAttribute GROUP_OPTIONS = new ComponentVerifierExtensionHelper.GroupErrorAttribute("GROUP_OPTIONS");
+        }
+    }
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/MetaDataExtension.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/MetaDataExtension.java b/camel-core/src/main/java/org/apache/camel/component/extension/MetaDataExtension.java
new file mode 100644
index 0000000..9361e66
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/MetaDataExtension.java
@@ -0,0 +1,74 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension;
+
+import java.util.Map;
+import java.util.Optional;
+
+import org.apache.camel.Exchange;
+import org.apache.camel.TypeConversionException;
+
+public interface MetaDataExtension extends ComponentExtension {
+    /**
+     * @param parameters
+     * @return the {@link MetaData}
+     */
+    Optional<MetaData> meta(Map<String, Object> parameters);
+
+    interface MetaData {
+        // Common meta-data attributes
+        String CONTENT_TYPE = Exchange.CONTENT_TYPE;
+        String JAVA_TYPE = "Java-Type";
+
+        /**
+         *
+         * Returns an attribute associated with this meta data by name.
+         *
+         * @param name the attribute name
+         * @return the attribute
+         */
+        Object getAttribute(String name);
+
+        /**
+         *
+         * Returns an attribute associated with this meta data by name and
+         * specifying the type required.
+         *
+         * @param name the attribute name
+         * @param type the type of the attribute
+         * @return the value of the given attribute or <tt>null</tt> if there is no attribute for the given name
+         * @throws TypeConversionException is thrown if error during type conversion
+         */
+        <T> T getAttribute(String name, Class<T> type);
+
+        /**
+         * Returns the payload of the meta data as a POJO.
+         *
+         * @return the body, can be <tt>null</tt>
+         */
+        Object getPayload();
+
+        /**
+         * Returns the payload of the meta data as specified type.
+         *
+         * @param type the type that the payload should be converted yo.
+         * @return the payload of the meta data as the specified type.
+         * @throws TypeConversionException is thrown if error during type conversion
+         */
+        <T> T getPayload(Class<T> type);
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/metadata/AbstractMetaDataExtension.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/metadata/AbstractMetaDataExtension.java b/camel-core/src/main/java/org/apache/camel/component/extension/metadata/AbstractMetaDataExtension.java
new file mode 100644
index 0000000..c8bd577
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/metadata/AbstractMetaDataExtension.java
@@ -0,0 +1,65 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension.metadata;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.CamelContextAware;
+import org.apache.camel.Component;
+import org.apache.camel.ComponentAware;
+import org.apache.camel.component.extension.MetaDataExtension;
+
+public abstract class AbstractMetaDataExtension implements MetaDataExtension, ComponentAware, CamelContextAware {
+    private CamelContext camelContext;
+    private Component component;
+
+    protected AbstractMetaDataExtension() {
+        this(null, null);
+    }
+
+    protected AbstractMetaDataExtension(Component component) {
+        this(component, component.getCamelContext());
+    }
+
+    protected AbstractMetaDataExtension(CamelContext camelContext) {
+        this(null, camelContext);
+    }
+
+    protected AbstractMetaDataExtension(Component component, CamelContext camelContext) {
+        this.component = component;
+        this.camelContext = camelContext;
+    }
+
+    @Override
+    public void setComponent(Component component) {
+        this.component = component;
+    }
+
+    @Override
+    public Component getComponent() {
+        return component;
+    }
+
+    @Override
+    public void setCamelContext(CamelContext camelContext) {
+        this.camelContext = camelContext;
+    }
+
+    @Override
+    public CamelContext getCamelContext() {
+        return camelContext;
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/metadata/DefaultMetaData.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/metadata/DefaultMetaData.java b/camel-core/src/main/java/org/apache/camel/component/extension/metadata/DefaultMetaData.java
new file mode 100644
index 0000000..b1e2df4
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/metadata/DefaultMetaData.java
@@ -0,0 +1,63 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension.metadata;
+
+import java.util.Map;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.component.extension.MetaDataExtension;
+
+public class DefaultMetaData implements MetaDataExtension.MetaData {
+    private final Map<String, Object> attributes;
+    private final Object payload;
+    private CamelContext camelContext;
+    
+    public DefaultMetaData(CamelContext camelContext, Map<String, Object> attributes, Object payload) {
+        this.camelContext = camelContext;
+        this.attributes = attributes;
+        this.payload = payload;
+    }
+
+    @Override
+    public Object getAttribute(String name) {
+        return attributes.get(name);
+    }
+
+    @Override
+    public <T> T getAttribute(String name, Class<T> type) {
+        Object value = attributes.get(name);
+        if (camelContext != null) {
+            return camelContext.getTypeConverter().convertTo(type, value);
+        }
+
+        throw new IllegalStateException("Unable to perform conversion as CamelContext is not set");
+    }
+
+    @Override
+    public Object getPayload() {
+        return payload;
+    }
+
+    @Override
+    public <T> T getPayload(Class<T> type) {
+        if (camelContext != null) {
+            return camelContext.getTypeConverter().convertTo(type, payload);
+        }
+
+        throw new IllegalStateException("Unable to perform conversion as CamelContext is not set");
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/metadata/MetaDataBuilder.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/metadata/MetaDataBuilder.java b/camel-core/src/main/java/org/apache/camel/component/extension/metadata/MetaDataBuilder.java
new file mode 100644
index 0000000..0957c64
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/metadata/MetaDataBuilder.java
@@ -0,0 +1,64 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension.metadata;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.component.extension.MetaDataExtension;
+
+public final class MetaDataBuilder {
+    private final CamelContext camelContext;
+    private Object payload;
+    private Map<String, Object> attributes;
+
+    private MetaDataBuilder(CamelContext camelContext) {
+        this.camelContext = camelContext;
+    }
+
+    public MetaDataBuilder withPayload(Object payload) {
+        this.payload = payload;
+        return this;
+    }
+
+    public MetaDataBuilder withAttribute(String name, Object value) {
+        if (this.attributes == null) {
+            this.attributes = new HashMap<>();
+        }
+
+        this.attributes.put(name, value);
+        return this;
+    }
+
+    public MetaDataExtension.MetaData build() {
+        return new DefaultMetaData(
+            camelContext,
+            attributes == null ? Collections.emptyMap() : attributes,
+            payload
+        );
+    }
+
+    // *****************************
+    //
+    // *****************************
+
+    public static MetaDataBuilder on(CamelContext camelContext) {
+        return new MetaDataBuilder(camelContext);
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/metadata/package.html
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/metadata/package.html b/camel-core/src/main/java/org/apache/camel/component/extension/metadata/package.html
new file mode 100644
index 0000000..6687307
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/metadata/package.html
@@ -0,0 +1,25 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<html>
+<head>
+</head>
+<body>
+
+MetaData component extension
+
+</body>
+</html>

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/package.html
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/package.html b/camel-core/src/main/java/org/apache/camel/component/extension/package.html
new file mode 100644
index 0000000..be2383a
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/package.html
@@ -0,0 +1,25 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<html>
+<head>
+</head>
+<body>
+
+Component extension
+
+</body>
+</html>

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/verifier/CatalogVerifierCustomizer.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/verifier/CatalogVerifierCustomizer.java b/camel-core/src/main/java/org/apache/camel/component/extension/verifier/CatalogVerifierCustomizer.java
new file mode 100644
index 0000000..e8d256a
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/verifier/CatalogVerifierCustomizer.java
@@ -0,0 +1,104 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension.verifier;
+
+public class CatalogVerifierCustomizer {
+    private boolean includeUnknown = true;
+    private boolean includeRequired = true;
+    private boolean includeInvalidBoolean = true;
+    private boolean includeInvalidInteger = true;
+    private boolean includeInvalidNumber = true;
+    private boolean includeInvalidEnum = true;
+
+    public boolean isIncludeUnknown() {
+        return includeUnknown;
+    }
+
+    public void setIncludeUnknown(boolean includeUnknown) {
+        this.includeUnknown = includeUnknown;
+    }
+
+    public boolean isIncludeRequired() {
+        return includeRequired;
+    }
+
+    public void setIncludeRequired(boolean includeRequired) {
+        this.includeRequired = includeRequired;
+    }
+
+    public boolean isIncludeInvalidBoolean() {
+        return includeInvalidBoolean;
+    }
+
+    public void setIncludeInvalidBoolean(boolean includeInvalidBoolean) {
+        this.includeInvalidBoolean = includeInvalidBoolean;
+    }
+
+    public boolean isIncludeInvalidInteger() {
+        return includeInvalidInteger;
+    }
+
+    public void setIncludeInvalidInteger(boolean includeInvalidInteger) {
+        this.includeInvalidInteger = includeInvalidInteger;
+    }
+
+    public boolean isIncludeInvalidNumber() {
+        return includeInvalidNumber;
+    }
+
+    public void setIncludeInvalidNumber(boolean includeInvalidNumber) {
+        this.includeInvalidNumber = includeInvalidNumber;
+    }
+
+    public boolean isIncludeInvalidEnum() {
+        return includeInvalidEnum;
+    }
+
+    public void setIncludeInvalidEnum(boolean includeInvalidEnum) {
+        this.includeInvalidEnum = includeInvalidEnum;
+    }
+
+    public CatalogVerifierCustomizer excludeUnknown() {
+        this.includeUnknown = false;
+        return this;
+    }
+
+    public CatalogVerifierCustomizer excludeRequired() {
+        this.includeRequired = false;
+        return this;
+    }
+
+    public CatalogVerifierCustomizer excludeInvalidBoolean() {
+        this.includeInvalidBoolean = false;
+        return this;
+    }
+
+    public CatalogVerifierCustomizer excludeInvalidInteger() {
+        this.includeInvalidInteger = false;
+        return this;
+    }
+
+    public CatalogVerifierCustomizer excludeInvalidNumber() {
+        this.includeInvalidNumber = false;
+        return this;
+    }
+
+    public CatalogVerifierCustomizer excludeInvalidEnum() {
+        this.includeInvalidEnum = false;
+        return this;
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/verifier/ComponentVerifierException.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/verifier/ComponentVerifierException.java b/camel-core/src/main/java/org/apache/camel/component/extension/verifier/ComponentVerifierException.java
new file mode 100644
index 0000000..690a571
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/verifier/ComponentVerifierException.java
@@ -0,0 +1,36 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension.verifier;
+
+import org.apache.camel.CamelException;
+
+public class ComponentVerifierException extends CamelException {
+    public ComponentVerifierException() {
+    }
+
+    public ComponentVerifierException(String message) {
+        super(message);
+    }
+
+    public ComponentVerifierException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public ComponentVerifierException(Throwable cause) {
+        super(cause);
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/42529399/camel-core/src/main/java/org/apache/camel/component/extension/verifier/ComponentVerifierExtensionHelper.java
----------------------------------------------------------------------
diff --git a/camel-core/src/main/java/org/apache/camel/component/extension/verifier/ComponentVerifierExtensionHelper.java b/camel-core/src/main/java/org/apache/camel/component/extension/verifier/ComponentVerifierExtensionHelper.java
new file mode 100644
index 0000000..583ccf7
--- /dev/null
+++ b/camel-core/src/main/java/org/apache/camel/component/extension/verifier/ComponentVerifierExtensionHelper.java
@@ -0,0 +1,145 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.extension.verifier;
+
+import org.apache.camel.component.extension.ComponentVerifierExtension;
+import org.apache.camel.component.extension.ComponentVerifierExtension.VerificationError.Attribute;
+import org.apache.camel.component.extension.ComponentVerifierExtension.VerificationError.Code;
+import org.apache.camel.component.extension.ComponentVerifierExtension.VerificationError.ExceptionAttribute;
+import org.apache.camel.component.extension.ComponentVerifierExtension.VerificationError.GroupAttribute;
+import org.apache.camel.component.extension.ComponentVerifierExtension.VerificationError.HttpAttribute;
+import org.apache.camel.component.extension.ComponentVerifierExtension.VerificationError.StandardCode;
+
+/**
+ * Package visible helper class holding implementation classes for
+ * constant like error code and attributes in {@link  ComponentVerifierExtension.VerificationError}
+ */
+public final class ComponentVerifierExtensionHelper {
+
+    /**
+     * Custom class for error codes
+     */
+    public static class ErrorCode implements Code {
+
+        private final String name;
+
+        public ErrorCode(String name) {
+            if (name == null) {
+                throw new IllegalArgumentException("Name of an error code must not be null");
+            }
+            this.name = name;
+        }
+
+        @Override
+        public String name() {
+            return name;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) {
+                return true;
+            }
+            if (!(o instanceof Code)) {
+                return false;
+            }
+
+            Code errorCode = (Code) o;
+
+            return name.equals(errorCode.name());
+        }
+
+        @Override
+        public int hashCode() {
+            return name.hashCode();
+        }
+
+        @Override
+        public String toString() {
+            return name();
+        }
+    }
+
+    public static class ErrorAttribute implements Attribute {
+
+        private final String name;
+
+        public ErrorAttribute(String name) {
+            if (name == null) {
+                throw new IllegalArgumentException("Name of an error attribute must not be null");
+            }
+            this.name = name;
+        }
+
+        @Override
+        public String name() {
+            return name;
+        }
+
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) {
+                return true;
+            }
+            if (!(o instanceof Attribute)) {
+                return false;
+            }
+
+            Attribute that = (Attribute) o;
+
+            return name.equals(that.name());
+        }
+
+        @Override
+        public int hashCode() {
+            return name.hashCode();
+        }
+
+        @Override
+        public String toString() {
+            return name();
+        }
+    }
+
+    // ===========================================================================================================
+    // Helper classes for implementing the constants in ComponentVerifier:
+
+    public static class StandardErrorCode extends ErrorCode implements StandardCode {
+        public StandardErrorCode(String name) {
+            super(name);
+        }
+    }
+
+    public static class ExceptionErrorAttribute extends ErrorAttribute implements ExceptionAttribute {
+        public ExceptionErrorAttribute(String name) {
+            super(name);
+        }
+    }
+
+    public static class HttpErrorAttribute extends ErrorAttribute implements HttpAttribute {
+        public HttpErrorAttribute(String name) {
+            super(name);
+        }
+    }
+
+    public static class GroupErrorAttribute extends ErrorAttribute implements GroupAttribute {
+        public GroupErrorAttribute(String name) {
+            super(name);
+        }
+    }
+}


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