io.cdap.cdap.internal.app.runtime.plugin.FindPluginHelper Maven / Gradle / Ivy
/*
* Copyright © 2016 Cask Data, Inc.
*
* Licensed 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.cdap.cdap.internal.app.runtime.plugin;
import com.google.common.base.Throwables;
import io.cdap.cdap.api.artifact.ArtifactId;
import io.cdap.cdap.api.macro.MacroParserOptions;
import io.cdap.cdap.api.plugin.Plugin;
import io.cdap.cdap.api.plugin.PluginClass;
import io.cdap.cdap.api.plugin.PluginProperties;
import io.cdap.cdap.api.plugin.PluginPropertyField;
import io.cdap.cdap.internal.app.runtime.artifact.ArtifactDescriptor;
import java.io.IOException;
import java.util.Map;
/**
* Abstract class that can help in finding plugin's
*/
public final class FindPluginHelper {
private FindPluginHelper() {
// no-op
}
/**
* Get the Plugin information from the specified information.
*
* @param parents plugin parents of the plugin. Each item in the iterable must be the parent of the item before it,
* with the first item as the direct parent of the plugin
* @param pluginEntry artifact and class information for the plugin
* @param properties plugin properties
* @param pluginInstantiator instantiator to add the plugin artifact to
* @return plugin information
*/
public static Plugin getPlugin(Iterable parents, Map.Entry pluginEntry,
PluginProperties properties, PluginInstantiator pluginInstantiator) {
CollectMacroEvaluator collectMacroEvaluator = new CollectMacroEvaluator();
for (PluginPropertyField field : pluginEntry.getValue().getProperties().values()) {
if (field.isMacroSupported() && properties.getProperties().containsKey(field.getName())) {
MacroParser parser = new MacroParser(collectMacroEvaluator,
MacroParserOptions.builder()
.setEscaping(field.isMacroEscapingEnabled())
.build());
parser.parse(properties.getProperties().get(field.getName()));
}
}
ArtifactId artifact = pluginEntry.getKey().getArtifactId();
try {
pluginInstantiator.addArtifact(pluginEntry.getKey().getLocation(), artifact);
} catch (IOException e) {
throw Throwables.propagate(e);
}
return new Plugin(parents, artifact, pluginEntry.getValue(),
properties.setMacros(collectMacroEvaluator.getMacros()));
}
}