/**
* Helper method for checking if this plugin name is already in use by and artifact app.
*
* @param plugin
* @return
*/
private boolean isArtifactPlugin(Plugin plugin) {
if (artifactApps == null) {
return false;
}
for (ArtifactApp app : artifactApps.values()) {
if (plugin.name().equals(app.name())) {
return true;
}
}
return false;
}
/**
* Helper method for loading artifacts and building a map of the artifact-based apps.
*
* @param artifacts the artifacts that will be checked for ES plugins
* @return a map of artifacts
*/
private Map<String, ArtifactApp> loadArtifacts(MavenResolvedArtifact[] artifacts) {
Map<String, ArtifactApp> map = newHashMap();
// no artifacts?
if (artifacts == null) {
logger.debug("no artifacts to load");
return map;
}
// Now we want to know the relationship between class path and JAR.
// build an URL map to assign found plugin on classpath to artifact
Map<URI, MavenResolvedArtifact> jars = newHashMap();
for (MavenResolvedArtifact artifact : artifacts) {
if (artifact.getCoordinate().getType().equals(PackagingType.JAR)) {
try {
URI uri = artifact.asFile().toURI();
classLoader.addUri(uri);
jars.put(uri, artifact);
} catch (Exception e) {
logger.warn("failed to add [{}]", artifact.getCoordinate(), e);
}
} else {
logger.warn("not a jar artifact: [{}]", artifact.getCoordinate());
}
}
// now, that everything is on the class path, build the artifact app map.
Enumeration<URL> propUrls = null;
try {
propUrls = classLoader.getResources(DEFAULT_RESOURCE);
} catch (IOException e1) {
logger.warn("failed to find resources on classpath", e1);
return map;
}
while (propUrls.hasMoreElements()) {
URL propUrl = propUrls.nextElement();
Properties appProps = new Properties();
InputStream is = null;
try {
is = propUrl.openStream();
appProps.load(is);
String appClassName = appProps.getProperty("plugin");
Plugin plugin = instantiatePluginClass(appClassName);
// lookup for artifact in the jars map
if (jars != null) {
// find URL of artifact
boolean found = false;
for (URI appUri : jars.keySet()) {
if (propUrl.toExternalForm().startsWith("jar:" + appUri.toString())) {
ArtifactApp app = new ArtifactApp(appUri.toURL(), jars.get(appUri), plugin);
map.put(app.getCanonicalForm(), app);
found = true;
}
}
if (!found) {
logger.warn("can't find artifact jar for " + propUrl + ", skipping");
}
}
} catch (Exception e) {
logger.warn("failed to load artifact from [" + propUrl + "]", e);
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
// ignore
}
}
}
}
return map;
}
