--- /dev/null
+package org.argeo.osgi.boot;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.StringTokenizer;
+import java.util.jar.JarEntry;
+import java.util.jar.JarInputStream;
+import java.util.jar.Manifest;
+
+import org.osgi.framework.Constants;
+
+/**
+ * A distribution bundle is a bundle within a maven-like distribution
+ * groupId:Bundle-SymbolicName:Bundle-Version which references others OSGi
+ * bundle. It is not required to be OSGi complete also it will generally be
+ * expected that it is. The root of the repository is computed based on the file
+ * name of the URL and of the content of the index.
+ */
+public class DistributionBundle {
+ private final static String INDEX_FILE_NAME = "modularDistribution.csv";
+
+ private final String url;
+
+ private Manifest manifest;
+ private String symbolicName;
+ private String version;
+
+ /** can be null */
+ private String baseUrl;
+ /** can be null */
+ private String relativeUrl;
+
+ private List/* <OsgiArtifact> */artifacts;
+
+ private String separator = ",";
+
+ public DistributionBundle(String url) {
+ this.url = url;
+ }
+
+ public DistributionBundle(String baseUrl, String relativeUrl) {
+ if (baseUrl == null || !baseUrl.endsWith("/"))
+ throw new OsgiBootException("Base url " + baseUrl
+ + " badly formatted");
+ if (relativeUrl.startsWith("http") || relativeUrl.startsWith("file:"))
+ throw new OsgiBootException("Relative URL " + relativeUrl
+ + " badly formatted");
+ this.url = baseUrl + relativeUrl;
+ this.baseUrl = baseUrl;
+ this.relativeUrl = relativeUrl;
+ }
+
+ public void processUrl() {
+ JarInputStream jarIn = null;
+ try {
+ URL u = new URL(url);
+ jarIn = new JarInputStream(u.openStream());
+
+ // meta data
+ manifest = jarIn.getManifest();
+ symbolicName = manifest.getMainAttributes().getValue(
+ Constants.BUNDLE_SYMBOLICNAME);
+ version = manifest.getMainAttributes().getValue(
+ Constants.BUNDLE_VERSION);
+
+ JarEntry indexEntry;
+ while ((indexEntry = jarIn.getNextJarEntry()) != null) {
+ String entryName = indexEntry.getName();
+ if (entryName.equals(INDEX_FILE_NAME)) {
+ break;
+ }
+ jarIn.closeEntry();
+ }
+
+ // list artifacts
+ if (indexEntry == null)
+ throw new OsgiBootException("No index " + INDEX_FILE_NAME
+ + " in " + url);
+ artifacts = listArtifacts(jarIn);
+ jarIn.closeEntry();
+
+ // find base URL
+ // won't work if distribution artifact is not listed
+ for (int i = 0; i < artifacts.size(); i++) {
+ OsgiArtifact osgiArtifact = (OsgiArtifact) artifacts.get(i);
+ if (osgiArtifact.getSymbolicName().equals(symbolicName)
+ && osgiArtifact.getVersion().equals(version)) {
+ String relativeUrl = osgiArtifact.getRelativeUrl();
+ if (url.endsWith(relativeUrl)) {
+ baseUrl = url.substring(0, url.length()
+ - osgiArtifact.getRelativeUrl().length());
+ break;
+ }
+ }
+ }
+ } catch (Exception e) {
+ throw new OsgiBootException("Cannot list URLs from " + url, e);
+ } finally {
+ if (jarIn != null)
+ try {
+ jarIn.close();
+ } catch (IOException e) {
+ // silent
+ }
+ }
+ }
+
+ protected List/* <OsgiArtifact> */listArtifacts(InputStream in) {
+ List osgiArtifacts = new ArrayList();
+ BufferedReader reader = null;
+ try {
+ reader = new BufferedReader(new InputStreamReader(in));
+ String line = null;
+ while ((line = reader.readLine()) != null) {
+ StringTokenizer st = new StringTokenizer(line, separator);
+ String moduleName = st.nextToken();
+ String moduleVersion = st.nextToken();
+ String relativeUrl = st.nextToken();
+ osgiArtifacts.add(new OsgiArtifact(moduleName, moduleVersion,
+ relativeUrl));
+ }
+ } catch (Exception e) {
+ throw new OsgiBootException("Cannot list artifacts", e);
+ }
+ return osgiArtifacts;
+ }
+
+ /** Convenience method */
+ public static DistributionBundle processUrl(String baseUrl,
+ String realtiveUrl) {
+ DistributionBundle distributionBundle = new DistributionBundle(baseUrl,
+ realtiveUrl);
+ distributionBundle.processUrl();
+ return distributionBundle;
+ }
+
+ /**
+ * List full URLs of the bunmdles, based on base URL, usable directly for
+ * download.
+ */
+ public List/* <String> */listUrls() {
+ if (baseUrl == null)
+ throw new OsgiBootException("Base URL is not set");
+
+ if (artifacts == null)
+ throw new OsgiBootException("Artifact list not initialized");
+
+ List/* <String> */urls = new ArrayList();
+ for (int i = 0; i < artifacts.size(); i++) {
+ OsgiArtifact osgiArtifact = (OsgiArtifact) artifacts.get(i);
+ urls.add(baseUrl + osgiArtifact.getRelativeUrl());
+ }
+ return urls;
+ }
+
+ public void setBaseUrl(String baseUrl) {
+ this.baseUrl = baseUrl;
+ }
+
+ /** Separator used to parse the tabular file */
+ public void setSeparator(String modulesUrlSeparator) {
+ this.separator = modulesUrlSeparator;
+ }
+
+ /** One of the listed artifact */
+ protected static class OsgiArtifact {
+ private final String symbolicName;
+ private final String version;
+ private final String relativeUrl;
+
+ public OsgiArtifact(String symbolicName, String version,
+ String relativeUrl) {
+ super();
+ this.symbolicName = symbolicName;
+ this.version = version;
+ this.relativeUrl = relativeUrl;
+ }
+
+ public String getSymbolicName() {
+ return symbolicName;
+ }
+
+ public String getVersion() {
+ return version;
+ }
+
+ public String getRelativeUrl() {
+ return relativeUrl;
+ }
+
+ }
+}
projects / lgpl / argeo-commons.git / blobdiff