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From andreaturli <...@git.apache.org>
Subject [GitHub] incubator-brooklyn pull request: Pluggable YAML parsers
Date Mon, 27 Jul 2015 15:22:27 GMT
Github user andreaturli commented on a diff in the pull request:

    https://github.com/apache/incubator-brooklyn/pull/760#discussion_r35548167
  
    --- Diff: usage/camp/src/main/java/io/brooklyn/camp/brooklyn/spi/creation/CampToSpecTransformer.java
---
    @@ -0,0 +1,86 @@
    +/*
    + * 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 io.brooklyn.camp.brooklyn.spi.creation;
    +
    +import java.io.StringReader;
    +
    +import brooklyn.basic.AbstractBrooklynObjectSpec;
    +import brooklyn.catalog.CatalogItem;
    +import brooklyn.entity.Application;
    +import brooklyn.entity.proxying.EntitySpec;
    +import brooklyn.management.ManagementContext;
    +import brooklyn.management.classloading.BrooklynClassLoadingContext;
    +import brooklyn.management.classloading.JavaBrooklynClassLoadingContext;
    +import brooklyn.plan.PlanToSpecTransformer;
    +import brooklyn.util.exceptions.Exceptions;
    +import io.brooklyn.camp.CampPlatform;
    +import io.brooklyn.camp.brooklyn.api.AssemblyTemplateSpecInstantiator;
    +import io.brooklyn.camp.spi.AssemblyTemplate;
    +import io.brooklyn.camp.spi.instantiate.AssemblyTemplateInstantiator;
    +
    +public class CampToSpecTransformer implements PlanToSpecTransformer {
    +
    +    public static final String YAML_CAMP_PLAN_TYPE = "brooklyn.camp/yaml";
    +
    +    private ManagementContext mgmt;
    +
    +    public String getName() {
    +        return YAML_CAMP_PLAN_TYPE;
    +    }
    +
    +    public boolean accepts(String mime) {
    +        return YAML_CAMP_PLAN_TYPE.equals(mime);
    +    }
    +
    +    public <T extends Application> EntitySpec<T> createApplicationSpec(String
plan) {
    +      CampPlatform camp = CampCatalogUtils.getCampPlatform(mgmt);
    +      AssemblyTemplate at = camp.pdp().registerDeploymentPlan( new StringReader(plan)
);
    +      AssemblyTemplateInstantiator instantiator;
    +      try {
    +          instantiator = at.getInstantiator().newInstance();
    +      } catch (Exception e) {
    +          throw Exceptions.propagate(e);
    +      }
    +      if (instantiator instanceof AssemblyTemplateSpecInstantiator) {
    +          BrooklynClassLoadingContext loader = JavaBrooklynClassLoadingContext.create(mgmt);
    +          @SuppressWarnings("unchecked")
    +          EntitySpec<T> createSpec = (EntitySpec<T>) ((AssemblyTemplateSpecInstantiator)
instantiator).createSpec(at, camp, loader, true);
    +          return createSpec;
    +      } else {
    +          // The unknown instantiator can create the app (Assembly), but not a spec.
    +          // Currently, all brooklyn plans should produce the above.
    +          if (at.getPlatformComponentTemplates()==null || at.getPlatformComponentTemplates().isEmpty())
{
    +              if (at.getCustomAttributes().containsKey("brooklyn.catalog"))
    +                  throw new IllegalArgumentException("Unrecognized application blueprint
format: expected an application, not a brooklyn.catalog");
    +              throw new IllegalArgumentException("Unrecognized application blueprint
format: no services defined");
    +          }
    +          // map this (expected) error to a nicer message
    +          throw new IllegalArgumentException("Unrecognized application blueprint format");
    +      }
    +    }
    +
    +    public AbstractBrooklynObjectSpec<?, ?> createCatalogSpec(CatalogItem<?,
?> item) {
    +        return CampCatalogUtils.createSpec(mgmt, item);
    +    }
    +
    +    public void injectManagementContext(ManagementContext mgmt) {
    +        this.mgmt = mgmt;
    +    }
    +
    +}
    --- End diff --
    
    [minor] add blank line?


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