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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SLING-7509) Add QueryClient
Date Wed, 28 Feb 2018 16:26:01 GMT

    [ https://issues.apache.org/jira/browse/SLING-7509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16380602#comment-16380602
] 

ASF GitHub Bot commented on SLING-7509:
---------------------------------------

volteanu commented on a change in pull request #5: SLING-7509 - Add QueryClient
URL: https://github.com/apache/sling-org-apache-sling-testing-clients/pull/5#discussion_r171301895
 
 

 ##########
 File path: src/main/java/org/apache/sling/testing/clients/query/QueryClient.java
 ##########
 @@ -0,0 +1,213 @@
+/*
+ * 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.sling.testing.clients.query;
+
+import org.apache.http.NameValuePair;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.sling.testing.clients.ClientException;
+import org.apache.sling.testing.clients.SlingClient;
+import org.apache.sling.testing.clients.SlingClientConfig;
+import org.apache.sling.testing.clients.SlingHttpResponse;
+import org.apache.sling.testing.clients.osgi.OsgiConsoleClient;
+import org.apache.sling.testing.clients.util.JsonUtils;
+import org.apache.sling.testing.clients.util.URLParameterBuilder;
+import org.codehaus.jackson.JsonNode;
+import org.ops4j.pax.tinybundles.core.TinyBundles;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.nio.file.Files;
+import java.util.List;
+
+import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
+import static org.apache.http.HttpStatus.SC_NOT_FOUND;
+import static org.apache.http.HttpStatus.SC_OK;
+import static org.apache.sling.testing.clients.util.ResourceUtil.getResourceAsStream;
+
+/**
+ * <p>Sling client for performing oak queries.</p>
+ *
+ * <p>Uses a custom query servlet {@code testQuery.json.jsp} to execute the query on
the server
+ * and return the results as a json. If the servlet is not yet present, it automatically
+ * installs it and creates the corresponding nodes</p>
+ *
+ * <p>Paths created in jcr:<br>
+ * - {@value JSP_PATH}, created by the bundle<br>
+ * - {@value QUERY_NODE}, with {@code resourceType}={@value RESOURCE_TYPE}
+ * </p>
+ *
+ * <p>The servlet is not automatically uninstalled to avoid too much noise on the instance.
+ * The caller should take care of it, if needed, by calling {@link #uninstallServlet()}</p>
+ */
+public class QueryClient extends SlingClient {
+
+    /**
+     * Query types, as defined in {@code org.apache.jackrabbit.oak.query.QueryEngineImpl}
+     */
+    public enum QueryType {
+        SQL2("JCR-SQL2"),
+        SQL("sql"),
+        XPATH("xpath"),
+        JQOM("JCR-JQOM");
+
+        private final String name;
+
+        QueryType(String name) {
+            this.name = name;
+        }
+
+        @Override
+        public String toString() {
+            return name;
+        }
+    }
+
+    private static final Logger LOG = LoggerFactory.getLogger(QueryClient.class);
+
+    private static final String BUNDLE_BSN = "org.apache.sling.testing.clients.query";
+    private static final String BUNDLE_NAME = "Query servlet for testing";
+    private static final String BUNDLE_VERSION = "1.0.0";
+    private static final String BUNDLE_FILE = "testquery.bundle.";
+
+    private static final String JSP_FILE = "/org/apache/sling/testing/clients/query/testQuery.json.jsp";
+    private static final String RESOURCE_TYPE = "testQuery";
+    private static final String COMPONENT_PATH = "apps/" + RESOURCE_TYPE;
+    private static final String JSP_PATH = COMPONENT_PATH + "/" + RESOURCE_TYPE + ".json.jsp";
+    private static final String QUERY_NODE = "/content/testquery";
+    private static final String QUERY_PATH = QUERY_NODE + ".json";
+
+    /**
+     * Constructor used by adaptTo
+     * @param http underlying HttpClient
+     * @param config config state
+     * @throws ClientException if the client cannot be created
+     */
+    public QueryClient(CloseableHttpClient http, SlingClientConfig config) throws ClientException
{
+        super(http, config);
+    }
+
+    /**
+     * Convenience constructor
+     * @param url host url
+     * @param user username
+     * @param password password
+     * @throws ClientException if the client cannot be constructed
+     */
+    public QueryClient(URI url, String user, String password) throws ClientException {
+        super(url, user, password);
+    }
+
+    /**
+     * Execute a query on the server and return the results as a json
+     *
+     * @param query query to be executed
+     * @param type type of the query
+     * @return the results in json as exported by {@code testQuery.json.jsp}
+     * @throws ClientException if the request failed to execute
+     */
+    public JsonNode doQuery(final String query, final QueryType type) throws ClientException
{
+        return doQuery(query, type, true);
+    }
+
+    /**
+     * Execute a query on the server and return only the number of rows in the result
+     *
+     * @param query query to be executed
+     * @param type type of the query
+     * @return total results returned by the query
+     * @throws ClientException if the request failed to execute
+     */
+    public long doCount(final String query, final QueryType type) throws ClientException
{
+        return doQuery(query, type, false).get("total").getLongValue();
+    }
+
+    protected JsonNode doQuery(final String query, final QueryType type, final boolean showResults)
+            throws ClientException {
+
+        List<NameValuePair> params = URLParameterBuilder.create()
+                .add("query", query)
+                .add("type", type.toString())
+                .add("showresults", Boolean.toString(showResults))
+                .getList();
+
+        try {
+            // try optimistically to execute the query
+            SlingHttpResponse response = this.doGet(QUERY_PATH, params, SC_OK);
+            return JsonUtils.getJsonNodeFromString(response.getContent());
+            // TODO check the json is a query result, not a default representation of the
node
+        } catch (ClientException e) {
+            if (e.getHttpStatusCode() == SC_NOT_FOUND) {
+                LOG.info("Failed to execute the first search, maybe because the servlet was
not yet installed");
+                installServlet();
+                // retry the same query
+                SlingHttpResponse response = this.doGet(QUERY_PATH, params, SC_OK);
+                return JsonUtils.getJsonNodeFromString(response.getContent());
+            } else {
+                throw e;
+            }
+        }
+    }
+
+    /**
+     * <p>Install the servlet to be able to perform queries.</p>
+     *
+     * <p>By default, methods of this client automatically call this, so there is no
+     * need to explicitly call from outside</p>
+     *
+     * @throws ClientException if the installation failed
+     */
+    public void installServlet() throws ClientException {
 
 Review comment:
   Done

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> Add QueryClient
> ---------------
>
>                 Key: SLING-7509
>                 URL: https://issues.apache.org/jira/browse/SLING-7509
>             Project: Sling
>          Issue Type: New Feature
>          Components: Apache Sling Testing Clients
>            Reporter: Valentin Olteanu
>            Priority: Major
>
> Currently, there is no way to run queries in sling using the clients. This is needed
in several tests to search content and assert the effects of a feature.
>  
> The solution proposed in [https://github.com/apache/sling-org-apache-sling-testing-clients/pull/5] 
>  * installs a custom query servlet
>  * runs the query in any of the supported format
>  * returns results as json



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