JCH
Java Community | Help. Code. Learn.•2d ago
Peter Rader

Push programatically

I need to push foobar.txt programatically. How to do that? This is my approach: 
package b;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.commons.exec.*;
import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
import org.eclipse.jgit.transport.*;
public class SimpleCloneAndPushTest {
    public void testPull() throws IOException, InterruptedException {
        var gitDaemon = new Daemon(new InetSocketAddress("localhost", 9_418));
        var gitRepo = new InMemoryRepository.Builder().build();
        gitDaemon.setRepositoryResolver((cli, name) -> gitRepo);
        gitDaemon.start();
        try {
            exec(".", "rm -rf abc");
            exec(".", "mkdir abc");
            exec(".", "git init abc -q");
            exec(".", "touch abc/foobar.txt");
            exec("abc", "git add foobar.txt");
            exec("abc", "git remote add abc git://localhost/abc/");
            exec("abc", "git switch --create master");
            exec("abc", "git commit -m \"Title\" -m \"Description...\"");
            exec("abc", "git push --set-upstream abc master");
        } finally {
            gitDaemon.stopAndWait();
        }
    }

    private static void exec(String dir, String line) throws IOException {
        System.out.println();
        System.out.println("localhost:~/" + dir + "/$ " + line);
        var cmdLine = CommandLine.parse(line);
        var executor = DefaultExecutor.builder().get();
        try {
            executor.setWorkingDirectory(new File(dir));
            executor.setStreamHandler(new PumpStreamHandler(System.out, System.err));
            var exitValue = executor.execute(cmdLine);
            if (exitValue != 0) {
                System.out.println("localhost:~/" + dir + "/ exit-code: " + exitValue);
            }
        } catch (ExecuteException e) {
            e.printStackTrace();
        }
    }
}
package b;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.commons.exec.*;
import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
import org.eclipse.jgit.transport.*;
public class SimpleCloneAndPushTest {
    public void testPull() throws IOException, InterruptedException {
        var gitDaemon = new Daemon(new InetSocketAddress("localhost", 9_418));
        var gitRepo = new InMemoryRepository.Builder().build();
        gitDaemon.setRepositoryResolver((cli, name) -> gitRepo);
        gitDaemon.start();
        try {
            exec(".", "rm -rf abc");
            exec(".", "mkdir abc");
            exec(".", "git init abc -q");
            exec(".", "touch abc/foobar.txt");
            exec("abc", "git add foobar.txt");
            exec("abc", "git remote add abc git://localhost/abc/");
            exec("abc", "git switch --create master");
            exec("abc", "git commit -m \"Title\" -m \"Description...\"");
            exec("abc", "git push --set-upstream abc master");
        } finally {
            gitDaemon.stopAndWait();
        }
    }

    private static void exec(String dir, String line) throws IOException {
        System.out.println();
        System.out.println("localhost:~/" + dir + "/$ " + line);
        var cmdLine = CommandLine.parse(line);
        var executor = DefaultExecutor.builder().get();
        try {
            executor.setWorkingDirectory(new File(dir));
            executor.setStreamHandler(new PumpStreamHandler(System.out, System.err));
            var exitValue = executor.execute(cmdLine);
            if (exitValue != 0) {
                System.out.println("localhost:~/" + dir + "/ exit-code: " + exitValue);
            }
        } catch (ExecuteException e) {
            e.printStackTrace();
        }
    }
}
21 Replies
JavaBot
JavaBot•2d ago
⌛ This post has been reserved for your question.
Hey @Peter Rader! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically marked as dormant after 300 minutes of inactivity.
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Peter Rader
Peter RaderOP•2d ago
Unfortunately the output sais it could not read from repo. This is the output: 
localhost:~/./$ rm -rf abc

localhost:~/./$ mkdir abc

localhost:~/./$ git init abc -q

localhost:~/./$ touch abc/foobar.txt

localhost:~/abc/$ git add foobar.txt

localhost:~/abc/$ git remote add abc git://localhost/abc/

localhost:~/abc/$ git switch --create master
Switched to a new branch 'master'

localhost:~/abc/$ git commit -m "Title" -m "Description..."
[master (root-commit) cc9ebb4] Title
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 foobar.txt

localhost:~/abc/$ git push --set-upstream abc master
fatal: Could not read from remote repository.
localhost:~/./$ rm -rf abc

localhost:~/./$ mkdir abc

localhost:~/./$ git init abc -q

localhost:~/./$ touch abc/foobar.txt

localhost:~/abc/$ git add foobar.txt

localhost:~/abc/$ git remote add abc git://localhost/abc/

localhost:~/abc/$ git switch --create master
Switched to a new branch 'master'

localhost:~/abc/$ git commit -m "Title" -m "Description..."
[master (root-commit) cc9ebb4] Title
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 foobar.txt

localhost:~/abc/$ git push --set-upstream abc master
fatal: Could not read from remote repository.
dan1st
dan1st•2d ago
oh, jgit not egit lol though you don't even seem to be using egit a lot lol IIRC git:// is the read-only protocol that needs to be explicitly configured or are you trying to use SSH?
Peter Rader
Peter RaderOP•2d ago
From the code above you can see that I do nothing with SSH.
dan1st
dan1st•2d ago
What is git://localhost/abc/ supposed to be?
Peter Rader
Peter RaderOP•2d ago
For security reasons I would not use the git:-protocol. But I think it is possible to do writes anyway -- even if a bad idea.
dan1st
dan1st•2d ago
Are you using the git protocol? The last time I checked, the git protocol is disabled by default and doesn't allow writes
Peter Rader
Peter RaderOP•2d ago
Mate, see the code above. There is no more classes in the project, just this one.
dan1st
dan1st•2d ago
Did you execute the same commands in a terminal? Did you get the same output?
Peter Rader
Peter RaderOP•2d ago
Yes
dan1st
dan1st•2d ago
fatal: Could not read from remote repository.
seems like the git://localhost/abc/ doesn't work and - I don't see any reason why it should work
Peter Rader
Peter RaderOP•2d ago
And I don't see any reason why it shoulnt work.
dan1st
dan1st•2d ago
Because git://localhost/abc/ is not a valid repo? You created an InMemoryRepository but how is that related to git://localhost/abc/? and from the docs
This means that there is generally no pushing over this protocol. You can enable push access but, given the lack of authentication, anyone on the internet who finds your project’s URL could push to that project. Suffice it to say that this is rare.
I don't see you enabling push access Do you expect the git push command to create a repository?
Peter Rader
Peter RaderOP•2d ago
I expect "init" to create and "push" to publish the repo.
dan1st
dan1st•2d ago
you might need to enable receive-pack functionality for the daemon if you really want to use the git protocol
dan1st
dan1st•2d ago
it seems to be disabled by default: https://github.com/eclipse-jgit/jgit/blob/4957eeb00d8a560d4246201dab87a2db173d9f6b/org.eclipse.jgit/src/org/eclipse/jgit/transport/Daemon.java#L130
GitHub
jgit/org.eclipse.jgit/src/org/eclipse/jgit/transport/Daemon.java at...
JGit, the Java implementation of git. Contribute to eclipse-jgit/jgit development by creating an account on GitHub.
JavaBot
JavaBot•2d ago
                        setEnabled(false);
                        setEnabled(false);
dan1st
dan1st•2d ago
as it is the case with the normal daemon Also you might want to consider adding a breakpoint in your repository resolver Can you run gitDaemon.getService("upload-pack").isEnabled()? my fault gitDaemon.getService("receive-pack").isEnabled()
Peter Rader
Peter RaderOP•2d ago
gitDaemon.getService("git-receive-pack").setEnabled(true); worked like a charm Thanks
JavaBot
JavaBot•2d ago
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JavaBot•2d ago
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