/**
* Fetch participants of TaskUpdate. Is called on creation of a new instance of TaskUpdate.
*
* @param repoUid the specified repository's identifier.
* @return new Object[] with length of 2. The first item is a vector of Links that content is
* containing ComputerRemotes that are online and participating at the specified repository.
* <p>The second entry contains a link between the local computer and the specified
* repository.
*/
private Object[] fetchTaskupdateParticipants(String repoUid) {
Vector<Link> vec_parti = new Vector<Link>();
Link ownRepoLink = null;
for (int j = 0; j < combination.size(); j++) {
final Link secondLnk = getCombination().get(j);
if (secondLnk.getRepository().getUid().equals(repoUid)) {
// inform the specified computer about the
// changes
final Computer currentComputer = secondLnk.getComputer();
if (!currentComputer.matches(ComputerLocal.this)
&& currentComputer instanceof ComputerRemote) {
vec_parti.addElement(secondLnk);
} else if (currentComputer.getUid().equals(getUid())) {
ownRepoLink = secondLnk;
}
}
}
return new Object[] {vec_parti, ownRepoLink};
}
/**
* @author Julius Huelsmann
* @version %I%, %U%
* @since 1.0
*/
public void run() {
while (!isInterrupted()) {
if (taskList.isEmpty() && getCombination().isEmpty()) {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
interrupt();
}
}
//
//
// Check if the connection is established to all the RemoteComputers
// that are listed as online
final double currentTime = System.currentTimeMillis();
for (int i = 0; i < computer.size(); i++) {
final double dueTime = computer.get(i).getDueContact();
final double connectionTime = computer.get(i).getContactionThreshold();
if (computer.get(i).isConnected()) {
if (currentTime > connectionTime) {
computer.get(i).setConnected(false);
Staticio.unskipPort(computer.get(i).getPort());
setChanged();
notifyObservers(new Object[] {View.ID_UPDATE_COMPUTER, computer});
} else if (currentTime > dueTime) {
computer.get(i).sayHi(ComputerLocal.this);
System.out.println("sayin hi");
} else {
System.out.println("hier" + (currentTime - computer.get(i).getLastContact()));
}
}
}
final int taskListSize = taskList.size();
final int totalNumber = taskList.size() + getCombination().size();
final String identifier =
"GitThreadRun" + new Random().nextDouble() + " " + System.currentTimeMillis();
taskLock.add(identifier);
if (!taskLock.get(0).equals(identifier)) {
View.print(
"DEBUG: taskLock.get(0) equalt nicht identifier!"
+ taskLock.get(0)
+ ".."
+ identifier);
try {
Thread.sleep(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
continue;
}
for (int i = 0; i < taskList.size(); i++) {
setPercentage(1.0 * i / totalNumber);
if (taskList.get(i).isReadyPerformOperation()) {
removeTask(i);
i--;
}
}
setChanged();
notifyObservers(new Object[] {View.ID_UPDATE_TASKS, taskList, taskListfinished});
for (int i = 0; i < getCombination().size(); i++) {
setPercentage(1.0 * (taskListSize + i) / totalNumber);
//
// if the current combination contains a repository which
// is contained by the local Computer check whether changes
// occurred. If that is the case, send information message
// to all participants of the repository.
final Link currentLink = getCombination().get(i);
final Repository repo = currentLink.getRepository();
final double timestamp = System.currentTimeMillis();
if (currentLink.getComputer().getUid().equals(getUid())) {
final String repoPath = currentLink.getPath();
final String commitMsg = "auto" + timestamp;
if (Utils.callScript(
Constants.UNIX_SRC_GIT_COMMIT,
Constants.UNIX_DEST_GIT_COMMIT.getAbsolutePath(),
repoPath + " " + commitMsg,
true)) {
//
// Inform the user about the changes
View.print("git changes occurred at " + repoPath);
} else {
continue;
}
// Find all the computers connected ot the
final Vector<Link> vec_parti =
(Vector<Link>) fetchTaskupdateParticipants(repo.getUid())[0];
// important: initialize TaskUpdate before sending
// signal.
TaskUpdate tu = new TaskUpdate(vec_parti, currentLink, ComputerLocal.this);
if (!tu.add(
TaskUpdate.generateInformationString(
repo.getUid(), ComputerLocal.this.getUid(), "" + timestamp))) {
View.print(
"Error: new created task does not accept "
+ "information on the local computer.");
}
taskList.add(tu);
//
// Inform every client that is online to update the repository.
for (int j = 0; j < vec_parti.size(); j++) {
((ComputerRemote) vec_parti.get(j).getComputer())
.repositoryUpdated(getUid(), repo.getUid(), timestamp);
}
}
}
removeTasklock(identifier);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
View.print("interrupted");
interrupt();
}
}
}
/**
* @param xrepository
* @param xpath
* @return
* @author Julius Huelsmann
* @version %I%, %U%
* @since 1.0
*/
public String becomeRepositorymember(final Repository xrepository, final String xpath) {
if (combination.size() == 0) {
return "ERROR: no combination found.";
}
Link linkSelected = null;
int index = 0;
do {
linkSelected = combination.get(index);
index++;
} while ((!linkSelected.getRepository().matches(xrepository)
|| linkSelected.getComputer() instanceof ComputerLocal
|| !((ComputerRemote) linkSelected.getComputer()).isConnected())
&& index < combination.size());
if (linkSelected == null
|| !linkSelected.getRepository().matches(xrepository)
|| linkSelected.getComputer() instanceof ComputerLocal
|| !((ComputerRemote) linkSelected.getComputer()).isConnected()) {
return "ERROR: No link between a computer that is online and the "
+ "specified repository found. Try again later.";
}
/*
* $1 the repository's root directory,
* $2 the repository's name.
* $3 the remote repository's url and path
*/
final String computerUrl = ((ComputerRemote) linkSelected.getComputer()).getAddress();
// TODO: hard-coded git user. change to git eitherway
final String parameter =
xpath
+ " "
+ linkSelected.getRepository().getName()
+ " juli@"
+ computerUrl
+ ":"
+ linkSelected.getPath();
//
// create directory to which is cloned
new File(xpath).mkdirs();
//
//
final boolean b =
Utils.callScript(
Constants.UNIX_SRC_GIT_CLONE,
Constants.UNIX_DEST_GIT_CLONE.getAbsolutePath(),
parameter,
true);
if (b) {
//
// Add new link to the vector of links and inform the remote computers
// the changes.
combination.add(new Link(xpath, this, xrepository));
broadcastInformation();
return "Successfully cloned repository from remote computer\n"
+ "remote ID :\t"
+ linkSelected.getComputer().getUid()
+ "\n"
+ "remote IP :\t"
+ computerUrl
+ "\n"
+ "remote path:\t"
+ linkSelected.getPath()
+ "\n"
+ "Destination:\t"
+ xpath
+ "."
+ "\n"
+ "Callparam. :\t"
+ parameter;
} else {
return "Failed to clone repository from remote computer\n"
+ "remote ID :\t"
+ linkSelected.getComputer().getUid()
+ "\n"
+ "remote IP :\t"
+ computerUrl
+ "\n"
+ "remote path:\t"
+ linkSelected.getPath()
+ "\n"
+ "Destination:\t"
+ xpath
+ "."
+ "\n"
+ "Callparam. :\t"
+ parameter;
}
}
/**
* Create new instance of TaskUpdate from received message
*
* @param xmessageRest
* @return
* @author Julius Huelsmann
* @version %I%, %U%
* @since 1.0
*/
public final synchronized boolean newTaskUpdate(final String xmessageRest) {
//
// Enable task-lock.
final String identifier =
"newTaskUpdate" + new Random().nextDouble() + " " + System.currentTimeMillis();
taskLock.add(identifier);
//
// In case the task is not locked, continue. Otherwise go to else clause
// that waits for a few milliseconds and recalls the function afterwards.
if (taskLock.get(0).equals(identifier)) {
//
// Check if task already exists that is working with the same repository
// and add string to the task. May occur here due to task-lock-delay.
if (forewardTaskMessage(xmessageRest)) {
return true;
}
//
// Here it is clear that the task does not exist and that a new task has
// to be created. Thus save the current time as an identifier of the
// update time.
double timestamp = System.currentTimeMillis();
final String[] extractedInfo = TaskUpdate.fetchInformation(xmessageRest);
final String repoUid = extractedInfo[0];
//
// Fetch participants of the new task for creating the task.
Object[] o = fetchTaskupdateParticipants(repoUid);
final Vector<Link> vec_parti = (Vector<Link>) o[0];
final Link ownRepoLink = (Link) o[1];
if (ownRepoLink != null && !vec_parti.isEmpty()) {
final String repoPath = ownRepoLink.getPath();
final String commitMsg = "auto" + timestamp;
if (!Utils.callScript(
Constants.UNIX_SRC_GIT_COMMIT,
Constants.UNIX_DEST_GIT_COMMIT.getAbsolutePath(),
repoPath + " " + commitMsg,
true)) {
timestamp = TaskUpdate.VALUE_NO_UPDATE;
} else {
View.print(
getClass().getSimpleName()
+ " Error. local computer "
+ "out of sync?"
+ ownRepoLink
+ vec_parti.isEmpty());
}
final TaskUpdate tu = new TaskUpdate(vec_parti, ownRepoLink, this);
taskList.add(tu);
if (!tu.add(xmessageRest)) {
View.print("ERROR in COMPUTERLOCAL COULD NOT ADD " + xmessageRest);
final String newId = taskLock.remove(0);
if (!newId.equals(identifier)) {
View.print("Fatal error in newTaksupdate 1");
}
return false;
}
final String myself =
Task.COMMUNIICATION_CHANGES
+ ownRepoLink.getRepository().getUid()
+ Utils.invalidCharLevel1
+ getUid()
+ Utils.invalidCharLevel1
+ timestamp;
if (!tu.add(myself)) {
View.print("ERROR in COMPUTERLOCAL COULD NOT ADD " + xmessageRest);
final String newId = taskLock.remove(0);
if (!newId.equals(identifier)) {
View.print("Fatal error in newTaksupdate 2");
}
return false;
}
final String newId = taskLock.remove(0);
if (!newId.equals(identifier)) {
View.print("Fatal error in newTaksupdate 3");
}
return true;
}
// update participants
final String newId = taskLock.remove(0);
if (!newId.equals(identifier)) {
View.print("Fatal error in newTaksupdate 4");
}
return false;
} else {
try {
Thread.sleep(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
return newTaskUpdate(xmessageRest);
}
}