Fixed dashboard design issues

dashboard/src/main/java/com/google/cloud/tools/opensource/cloudbomdashboard/ArtifactMavenData.java

@@ -0,0 +1,233 @@
+/*
+ * Copyright 2020 Google LLC.
+ *
+ * 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 com.google.cloud.tools.opensource.cloudbomdashboard;
+
+import org.apache.maven.artifact.repository.metadata.Metadata;
+import org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader;
+import org.apache.maven.model.Dependency;
+import org.apache.maven.model.Model;
+import org.apache.maven.model.io.xpp3.MavenXpp3Reader;
+import org.apache.commons.io.FileUtils;
+import org.eclipse.aether.artifact.Artifact;
+import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.BufferedInputStream;
+import java.net.URL;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * Container class for all artifact data pulled from Maven central.
+ */
+public class ArtifactMavenData {
+
+  private static DateFormat dateFormat = new SimpleDateFormat("yyyyMMddhhmmss");
+  private static DateFormat outputFormat = new SimpleDateFormat("MM-dd-yyyy");
+
+  private final Artifact artifact;
+
+  private final String latestVersion, lastUpdated,
+      sharedDependenciesVersion, sharedDependenciesPosition,
+      pomFileUrl, metadataUrl;
+
+  private ArtifactMavenData(Artifact artifact, String latestVersion,
+      String lastUpdated, String sharedDependenciesVersion,
+      String sharedDependenciesPosition,
+      String pomFileUrl, String metadataUrl) {
+    this.artifact = artifact;
+    this.latestVersion = latestVersion;
+    this.lastUpdated = lastUpdated;
+    this.sharedDependenciesVersion = sharedDependenciesVersion;
+    this.sharedDependenciesPosition = sharedDependenciesPosition;
+
+    this.pomFileUrl = pomFileUrl;
+    this.metadataUrl = metadataUrl;
+  }
+
+  public Artifact getArtifact() {
+    return artifact;
+  }
+
+  public String getSharedDependenciesPosition() {
+    return sharedDependenciesPosition;
+  }
+
+  public String getPomFileUrl() {
+    return pomFileUrl;
+  }
+
+  public String getMetadataUrl() {
+    return metadataUrl;
+  }
+
+  public String getLatestVersion() {
+    return latestVersion;
+  }
+
+  public String getLastUpdated() {
+    return lastUpdated;
+  }
+
+  public String getSharedDependenciesVersion() {
+    return sharedDependenciesVersion;
+  }
+
+  public static ArtifactMavenData generateArtifactMavenData(Artifact artifact) {
+    String metadataUrl = generateMetadataUrl(artifact);
+    String pomFileUrl = generatePomFileUrl(artifact);
+
+    LatestMetadata metadata = getLatestVersionAndLastUpdated(metadataUrl);
+
+    String latestVersion = metadata.latestVersion;
+    String lastUpdated = metadata.lastUpdated;
+
+    SharedDependenciesData data = sharedDependencyPositionAndVersion(pomFileUrl, artifact);
+
+    String sharedDependenciesPosition = data.sharedDependencyPosition;
+    String sharedDependenciesVersion = data.sharedDependencyVersion;
+
+    return new ArtifactMavenData(artifact, latestVersion, lastUpdated,
+        sharedDependenciesVersion, sharedDependenciesPosition,
+        metadataUrl, pomFileUrl);
+  }
+
+  private static LatestMetadata getLatestVersionAndLastUpdated(String metadataUrl) {
+    try {
+      File metadataFile = File.createTempFile("metadata", ".xml");
+      metadataFile.deleteOnExit();
+
+      URL url = new URL(metadataUrl);
+      FileUtils.copyURLToFile(url, metadataFile);
+
+      MetadataXpp3Reader reader = new MetadataXpp3Reader();
+      Metadata metadata = reader.read(new FileInputStream(metadataFile));
+
+      if (metadata.getVersioning() == null) {
+        return new LatestMetadata("", "");
+      }
+
+      String latestVersion;
+      if (metadata.getVersioning().getLatest() == null) {
+        latestVersion = "";
+      } else {
+        latestVersion = metadata.getVersioning().getLatest();
+      }
+
+      String lastUpdated = metadata.getVersioning().getLastUpdated();
+      if (lastUpdated != null && !lastUpdated.isEmpty()) {
+        Date date = dateFormat.parse(lastUpdated);
+        lastUpdated = outputFormat.format(date);
+      } else {
+        lastUpdated = "";
+      }
+      return new LatestMetadata(latestVersion, lastUpdated);
+    } catch (XmlPullParserException | ParseException | IOException ignored) {
+      return new LatestMetadata("", "");
+    }
+  }
+
+  private static SharedDependenciesData sharedDependencyPositionAndVersion(String pomUrl,
+      Artifact artifact) {
+    String groupPath = artifact.getGroupId().replace('.', '/');
+    String parentPath = DashboardMain.basePath + "/" + groupPath
+        + "/" + artifact.getArtifactId() + "-parent"
+        + "/" + artifact.getVersion()
+        + "/" + artifact.getArtifactId() + "-parent-" + artifact.getVersion() + ".pom";
+    String depsBomPath = DashboardMain.basePath + "/" + groupPath
+        + "/" + artifact.getArtifactId() + "-deps-bom"
+        + "/" + artifact.getVersion()
+        + "/" + artifact.getArtifactId() + "-deps-bom-" + artifact.getVersion() + ".pom";
+    String version = getSharedDependenciesVersionFromUrl(parentPath);
+    if (version != null) {
+      return new SharedDependenciesData(parentPath, version);
+    }
+    version = getSharedDependenciesVersionFromUrl(pomUrl);
+    if (version != null) {
+      return new SharedDependenciesData(pomUrl, version);
+    }
+    version = getSharedDependenciesVersionFromUrl(depsBomPath);
+    if (version != null) {
+      return new SharedDependenciesData(depsBomPath, version);
+    }
+    return new SharedDependenciesData("", "");
+  }
+
+  private static String getSharedDependenciesVersionFromUrl(String pomUrl) {
+    try {
+      File pomFile = File.createTempFile("pomFile", ".xml");
+      pomFile.deleteOnExit();
+      URL url = new URL(pomUrl);
+      BufferedInputStream input = new BufferedInputStream(url.openStream());
+      FileUtils.copyInputStreamToFile(input, pomFile);
+      MavenXpp3Reader read = new MavenXpp3Reader();
+      Model model = read.read(new FileInputStream(pomFile));
+      if (model.getDependencyManagement() == null) {
+        return null;
+      }
+      for (Dependency dep : model.getDependencyManagement()
+          .getDependencies()) {
+        if ("com.google.cloud".equals(dep.getGroupId()) && "google-cloud-shared-dependencies"
+            .equals(dep.getArtifactId())) {
+          return dep.getVersion();
+        }
+      }
+
+    } catch (XmlPullParserException | IOException ignored) {
+    }
+    return null;
+  }
+
+  private static String generatePomFileUrl(Artifact artifact) {
+    String groupPath = artifact.getGroupId().replace('.', '/');
+    return DashboardMain.basePath + "/" + groupPath
+        + "/" + artifact.getArtifactId()
+        + "/" + artifact.getVersion()
+        + "/" + artifact.getArtifactId() + "-" + artifact.getVersion() + ".pom";
+  }
+
+  private static String generateMetadataUrl(Artifact artifact) {
+    String groupPath = artifact.getGroupId().replace('.', '/');
+    return DashboardMain.basePath + "/" + groupPath
+        + "/" + artifact.getArtifactId()
+        + "/maven-metadata.xml";
+  }
+
+  private static class LatestMetadata {
+
+    String latestVersion, lastUpdated;
+
+    LatestMetadata(String latestVersion, String lastUpdated) {
+      this.latestVersion = latestVersion;
+      this.lastUpdated = lastUpdated;
+    }
+  }
+
+  private static class SharedDependenciesData {
+
+    String sharedDependencyPosition, sharedDependencyVersion;
+
+    SharedDependenciesData(String sharedDependencyPosition, String sharedDependencyVersion) {
+      this.sharedDependencyPosition = sharedDependencyPosition;
+      this.sharedDependencyVersion = sharedDependencyVersion;
+    }
+  }
+}