Java tutorial
package org.commonjava.tensor.maven.plugin; /* * Copyright 2001-2005 The Apache Software Foundation. * * 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. */ import java.io.File; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.MalformedURLException; import java.net.URI; import java.net.URISyntaxException; import java.net.URL; import java.util.List; import org.apache.http.HttpHeaders; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.StatusLine; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.methods.HttpPut; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.maven.execution.MavenSession; import org.apache.maven.plugin.AbstractMojo; import org.apache.maven.plugin.MojoExecutionException; import org.apache.maven.plugin.logging.Log; import org.apache.maven.plugins.annotations.LifecyclePhase; import org.apache.maven.plugins.annotations.Mojo; import org.apache.maven.plugins.annotations.Parameter; import org.apache.maven.plugins.annotations.ResolutionScope; import org.apache.maven.project.MavenProject; import org.commonjava.maven.atlas.common.ref.ProjectVersionRef; import org.commonjava.maven.atlas.effective.EGraphManager; import org.commonjava.maven.atlas.spi.jung.effective.JungEGraphDriver; import org.commonjava.tensor.data.GraphWorkspaceHolder; import org.commonjava.tensor.dto.ModuleAssociations; import org.commonjava.tensor.inject.TensorSerializerProvider; import org.commonjava.web.json.ser.JsonSerializer; @Mojo(name = "touch", defaultPhase = LifecyclePhase.PROCESS_SOURCES, requiresDependencyResolution = ResolutionScope.TEST) public class LogProjectBuildroot extends AbstractMojo { @Parameter(defaultValue = "${project}", required = true, readonly = true) private MavenProject project; @Parameter(defaultValue = "${project.basedir}", required = true, readonly = true) private File basedir; @Parameter(defaultValue = "${reactorProjects}", required = true, readonly = true) private List<MavenProject> projects; @Parameter(defaultValue = "${session}", required = true, readonly = true) private MavenSession session; @Parameter(defaultValue = "http://locahost:9080/aprox/api/1.0/rel", required = true, property = "tensor.url") private String tensorBaseUrl; @Parameter(defaultValue = "metadata/module-associations", required = true, property = "tensor.endpoint") private String tensorEndpoint; @Override public void execute() throws MojoExecutionException { if (isThisTheExecutionRoot()) { final ModuleAssociations moduleAssoc = new ModuleAssociations( new ProjectVersionRef(project.getGroupId(), project.getArtifactId(), project.getVersion())); for (final MavenProject p : projects) { moduleAssoc.addModule(new ProjectVersionRef(p.getGroupId(), p.getArtifactId(), p.getVersion())); } final TensorSerializerProvider prov = new TensorSerializerProvider( new EGraphManager(new JungEGraphDriver()), new GraphWorkspaceHolder()); final JsonSerializer serializer = prov.getTensorSerializer(); final String json = serializer.toString(moduleAssoc); final DefaultHttpClient client = new DefaultHttpClient(); try { final HttpPut request = new HttpPut(getUrl()); request.setHeader(HttpHeaders.CONTENT_TYPE, "application/json"); request.setEntity(new StringEntity(json)); final HttpResponse response = client.execute(request); final StatusLine sl = response.getStatusLine(); if (sl.getStatusCode() != HttpStatus.SC_CREATED) { throw new MojoExecutionException("Failed to publish module-artifact association data: " + sl.getStatusCode() + " " + sl.getReasonPhrase()); } } catch (final UnsupportedEncodingException e) { throw new MojoExecutionException( "Failed to publish module-artifact association data; invalid encoding for JSON: " + e.getMessage(), e); } catch (final ClientProtocolException e) { throw new MojoExecutionException( "Failed to publish module-artifact association data; http request failed: " + e.getMessage(), e); } catch (final IOException e) { throw new MojoExecutionException( "Failed to publish module-artifact association data; http request failed: " + e.getMessage(), e); } } } private URI getUrl() throws MojoExecutionException { final StringBuilder sb = new StringBuilder(tensorBaseUrl); if (!tensorBaseUrl.endsWith("/")) { sb.append("/"); } sb.append(tensorEndpoint); try { return new URL(sb.toString()).toURI(); } catch (final MalformedURLException e) { throw new MojoExecutionException( "Failed to publish module-artifact association data; invalid URL: " + sb, e); } catch (final URISyntaxException e) { throw new MojoExecutionException( "Failed to publish module-artifact association data; invalid URL: " + sb, e); } } /* * Copied from maven-assembly-plugin-2.3. */ protected boolean isThisTheExecutionRoot() { final Log log = getLog(); log.debug("Root Folder:" + session.getExecutionRootDirectory()); log.debug("Current Folder:" + basedir); final boolean result = session.getExecutionRootDirectory().equalsIgnoreCase(basedir.toString()); if (result) { log.debug("This is the execution root."); } else { log.debug("This is NOT the execution root."); } return result; } }