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package com.ibm.ServerWizard2.utility;
import java.io.File;
import java.io.PrintWriter;
import java.util.Collection;
import java.util.HashMap;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.RebaseResult;
import org.eclipse.jgit.api.ResetCommand.ResetType;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.RepositoryCache;
import org.eclipse.jgit.lib.TextProgressMonitor;
import org.eclipse.jgit.transport.FetchResult;
import org.eclipse.jgit.transport.RefSpec;
import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;
import org.eclipse.jgit.util.FS;
import org.eclipse.swt.widgets.Shell;
import com.ibm.ServerWizard2.ServerWizard2;
import com.ibm.ServerWizard2.view.PasswordPrompt;
public class GithubRepository implements Comparable<GithubRepository> {
private String remoteUrl;
private File rootDirectory;
private File gitDirectory;
private boolean needsPassword;
private boolean passwordValidated = false;
private Shell shell = null;
private UsernamePasswordCredentialsProvider credentials;
private boolean cloned;
private final RefSpec refSpec = new RefSpec("+refs/heads/*:refs/remotes/origin/*");
public GithubRepository(String remoteUrl, String localDir, boolean needsPassword) {
this.remoteUrl = remoteUrl;
this.needsPassword = needsPassword;
File f = new File(remoteUrl);
String localPath = localDir + File.separator + f.getName().replace(".git", "");
rootDirectory = new File(localPath);
gitDirectory = new File(localPath + File.separator + ".git");
cloned = false;
if (RepositoryCache.FileKey.isGitRepository(this.getGitDirectory(), FS.DETECTED)) {
cloned = true;
}
}
public void setShell(Shell shell) {
this.shell = shell;
}
public File getRootDirectory() {
return rootDirectory;
}
public File getGitDirectory() {
return gitDirectory;
}
public void getPassword() {
if (!this.needsPassword) {
credentials = new UsernamePasswordCredentialsProvider("", "");
return;
}
PasswordPrompt dlg = new PasswordPrompt(shell, this.remoteUrl);
dlg.open();
credentials = new UsernamePasswordCredentialsProvider("", dlg.passwd);
passwordValidated = false;
}
public String getRemoteUrl() {
return this.remoteUrl;
}
public boolean needsPassword() {
return this.needsPassword;
}
public String needsPasswordStr() {
if (this.needsPassword) {
return "true";
}
return "false";
}
public void checkRemote() throws Exception {
if (!passwordValidated) {
this.getPassword();
}
Collection<Ref> refs;
boolean found = false;
try {
refs = Git.lsRemoteRepository().setCredentialsProvider(credentials).setHeads(true).setTags(true)
.setRemote(this.remoteUrl).call();
if (!refs.isEmpty()) {
found = true;
passwordValidated = true;
for (Ref ref : refs) {
ServerWizard2.LOGGER.info("Ref: " + ref);
}
}
} catch (Exception e) {
ServerWizard2.LOGGER.severe(e.getMessage());
this.betterError(e);
}
if (!found) {
passwordValidated = false;
throw new Exception("Invalid Remote Repository or bad Password:\n" + this.getRemoteUrl());
}
}
public void cloneRepository() throws Exception {
if (!passwordValidated) {
this.getPassword();
}
if (isCloned()) {
return;
}
ServerWizard2.LOGGER.info("Cloning " + this.remoteUrl + " into " + this.getRootDirectory().getAbsolutePath());
cloned = false;
try {
//TODO: determine MacOS hang issue with the progress monitor
//ProgressMonitor pim = new ProgressMonitor(null, "Cloning...", "", 0, 1);
//GitProgressMonitor gpim = new GitProgressMonitor(pim);
Git result = Git.cloneRepository()
.setCredentialsProvider(credentials)
.setProgressMonitor(new TextProgressMonitor(new PrintWriter(System.out)))
.setURI(this.getRemoteUrl()).setDirectory(this.getRootDirectory()).call();
cloned = true;
result.close();
} catch (Exception e1) {
passwordValidated = false;
this.betterError(e1);
}
}
public String fetch(boolean reset) throws Exception {
if (!passwordValidated) {
this.getPassword();
}
ServerWizard2.LOGGER.info("Fetching " + this.rootDirectory.getAbsolutePath());
String rstr = "";
try {
Git result = Git.open(this.rootDirectory);
FetchResult fetch = result.fetch()
.setRemote(this.getRemoteUrl())
.setCredentialsProvider(credentials)
.setProgressMonitor(new TextProgressMonitor(new PrintWriter(System.out)))
.setRefSpecs(refSpec)
.call();
ServerWizard2.LOGGER.info(fetch.getMessages());
if (reset) {
ServerWizard2.LOGGER.info("Resetting to head: " + this.getRemoteUrl());
result.reset().setMode(ResetType.HARD).setRef("refs/remotes/origin/master").call();
rstr = "Reset Complete";
}
ServerWizard2.LOGGER.info("Rebase: " + this.getRemoteUrl());
RebaseResult r = result.rebase().setUpstream("refs/remotes/origin/master").call();
rstr = r.getStatus().toString();
ServerWizard2.LOGGER.info(rstr);
result.close();
} catch (Exception e1) {
passwordValidated = false;
this.betterError(e1);
}
return rstr;
}
public org.eclipse.jgit.api.Status status() {
org.eclipse.jgit.api.Status status = null;
try {
Git result = Git.open(this.getRootDirectory());
status = result.status()
.setProgressMonitor(new TextProgressMonitor(new PrintWriter(System.out)))
.call();
result.close();
} catch (Exception e1) {
ServerWizard2.LOGGER.severe(e1.getMessage());
status = null;
}
return status;
}
// The chained exceptions from jgit don't explain error
// Need to dive down to root cause and make better error message.
public void betterError(Exception e) throws Exception {
HashMap<String,String> errorLookup = new HashMap<String,String>();
errorLookup.put("java.net.UnknownHostException", "Unable to connect to location:");
errorLookup.put("org.eclipse.jgit.errors.NoRemoteRepositoryException", "Remote Repository not found:");
errorLookup.put("org.eclipse.jgit.errors.TransportException", "Invalid Remote Repository or Incorrect Password: ");
ServerWizard2.LOGGER.severe(e.getCause().toString());
Throwable t = getCause(e);
ServerWizard2.LOGGER.severe(t.toString());
String errorMsg = t.getMessage();
if (errorLookup.containsKey(t.getClass().getName())) {
errorMsg = errorLookup.get(t.getClass().getName()) + "\n" + t.getMessage();
}
throw new Exception(errorMsg);
}
public boolean isCloned() {
return cloned;
}
public void clear() {
// make sure stored password is destroyed
credentials.clear();
}
public String toString() {
return this.remoteUrl + "; " + this.getGitDirectory().getAbsolutePath() + "; " + this.needsPasswordStr();
}
@Override
public int compareTo(GithubRepository o) {
return this.getRemoteUrl().compareTo(o.getRemoteUrl());
}
public boolean equals(Object o) {
if (o == null)
return false;
if (o == this)
return true;
if (o instanceof String) {
String s = (String) o;
if (this.getRemoteUrl().equals(s)) {
return true;
}
return false;
} else if (o instanceof GithubRepository) {
GithubRepository p = (GithubRepository) o;
return this.compareTo(p) == 0 ? true : false;
}
return false;
}
Throwable getCause(Throwable e) {
Throwable cause = null;
Throwable result = e;
while(null != (cause = result.getCause()) && (result != cause) ) {
result = cause;
}
return result;
}
}
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