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extract JobListener, remove dependency ShellImpl

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pull/1171/head
kylixs 5 years ago
parent dbed24a2f4
commit 64cee4f389
4 changed files with 125 additions and 45 deletions
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5
core/src/main/java/com/taobao/arthas/core/shell/system/Job.java
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@ -57,6 +57,11 @@ public interface Job {
*/
Job resume();
/**
* @return true if the job is running in background
*/
boolean isRunInBackground();
/**
* Send the job to background.
*

18
core/src/main/java/com/taobao/arthas/core/shell/system/JobListener.java
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@ -0,0 +1,18 @@
package com.taobao.arthas.core.shell.system;
import com.taobao.arthas.core.shell.system.impl.JobImpl;
/**
* Job listener
* @author gongdewei 2020-03-23
*/
public interface JobListener {
void onForeground(Job job);
void onBackground(Job job);
void onTerminated(Job job);
void onSuspend(Job job);
}

38
core/src/main/java/com/taobao/arthas/core/shell/system/impl/JobControllerImpl.java
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@ -11,6 +11,7 @@ import com.taobao.arthas.core.shell.handlers.Handler;
import com.taobao.arthas.core.shell.impl.ShellImpl;
import com.taobao.arthas.core.shell.system.Job;
import com.taobao.arthas.core.shell.system.JobController;
import com.taobao.arthas.core.shell.system.JobListener;
import com.taobao.arthas.core.shell.system.Process;
import com.taobao.arthas.core.shell.system.impl.ProcessImpl.ProcessOutput;
import com.taobao.arthas.core.shell.term.Term;
@ -34,6 +35,7 @@ import java.util.concurrent.atomic.AtomicInteger;
/**
* @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
* @author hengyunabc 2019-05-14
* @author gongdewei 2020-03-23
*/
public class JobControllerImpl implements JobController {
@ -66,7 +68,7 @@ public class JobControllerImpl implements JobController {
boolean runInBackground = runInBackground(tokens);
Process process = createProcess(tokens, commandManager, jobId, shell.term());
process.setJobId(jobId);
JobImpl job = new JobImpl(jobId, this, process, line.toString(), runInBackground, shell);
JobImpl job = new JobImpl(jobId, this, process, line.toString(), runInBackground, shell.session(), new ShellJobHandler(shell));
jobs.put(jobId, job);
return job;
}
@ -225,4 +227,38 @@ public class JobControllerImpl implements JobController {
public void close() {
close(null);
}
private class ShellJobHandler implements JobListener {
ShellImpl shell;
public ShellJobHandler(ShellImpl shell) {
this.shell = shell;
}
@Override
public void onForeground(Job job) {
shell.setForegroundJob(job);
}
@Override
public void onBackground(Job job) {
shell.setForegroundJob(null);
shell.readline();
}
@Override
public void onTerminated(Job job) {
if (!job.isRunInBackground()){
shell.readline();
}
}
@Override
public void onSuspend(Job job) {
if (!job.isRunInBackground()){
shell.readline();
}
}
}
}

109
core/src/main/java/com/taobao/arthas/core/shell/system/impl/JobImpl.java
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@ -7,11 +7,10 @@ import java.util.concurrent.atomic.AtomicBoolean;
import com.taobao.arthas.core.shell.future.Future;
import com.taobao.arthas.core.shell.handlers.Handler;
import com.taobao.arthas.core.shell.handlers.shell.ShellForegroundUpdateHandler;
import com.taobao.arthas.core.shell.impl.ShellImpl;
import com.taobao.arthas.core.shell.session.Session;
import com.taobao.arthas.core.shell.system.ExecStatus;
import com.taobao.arthas.core.shell.system.Job;
import com.taobao.arthas.core.shell.system.JobListener;
import com.taobao.arthas.core.shell.system.Process;
import com.taobao.arthas.core.shell.term.Term;
import com.taobao.arthas.core.shell.term.impl.TermImpl;
@ -21,6 +20,7 @@ import com.taobao.arthas.core.util.FileUtils;
/**
* @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
* @author hengyunabc 2019-05-14
* @author gongdewei 2020-03-23
*/
public class JobImpl implements Job {
@ -28,25 +28,30 @@ public class JobImpl implements Job {
final JobControllerImpl controller;
final Process process;
final String line;
private volatile Session session;
private volatile ExecStatus actualStatus; // Used internally for testing only
volatile long lastStopped; // When the job was last stopped
volatile ShellImpl shell;
volatile JobListener jobHandler;
volatile Handler<ExecStatus> statusUpdateHandler;
volatile Date timeoutDate;
final Future<Void> terminateFuture;
final AtomicBoolean runInBackground;
final Handler<Job> foregroundUpdatedHandler;
//final Handler<Job> foregroundUpdatedHandler;
JobImpl(int id, final JobControllerImpl controller, Process process, String line, boolean runInBackground,
ShellImpl shell) {
Session session, JobListener jobHandler) {
this.id = id;
this.controller = controller;
this.process = process;
this.line = line;
this.session = session;
this.terminateFuture = Future.future();
this.runInBackground = new AtomicBoolean(runInBackground);
this.shell = shell;
this.foregroundUpdatedHandler = new ShellForegroundUpdateHandler(shell);
this.jobHandler = jobHandler;
if (jobHandler == null) {
throw new IllegalArgumentException("JobListener is required");
}
//this.foregroundUpdatedHandler = new ShellForegroundUpdateHandler(shell);
process.terminatedHandler(new TerminatedHandler(controller));
}
@ -76,7 +81,7 @@ public class JobImpl implements Job {
@Override
public Session getSession() {
return shell.session();
return session;
}
@Override
@ -89,19 +94,19 @@ public class JobImpl implements Job {
runInBackground.set(!foreground);
if (foreground) {
if (foregroundUpdatedHandler != null) {
foregroundUpdatedHandler.handle(this);
}
}
// if (foreground) {
// if (foregroundUpdatedHandler != null) {
// foregroundUpdatedHandler.handle(this);
// }
// }
if (statusUpdateHandler != null) {
statusUpdateHandler.handle(process.status());
}
if (foreground) {
shell.setForegroundJob(this);
jobHandler.onForeground(this);
} else {
shell.setForegroundJob(null);
jobHandler.onBackground(this);
}
return this;
}
@ -113,14 +118,15 @@ public class JobImpl implements Job {
} catch (IllegalStateException ignore) {
return this;
}
if (!runInBackground.get() && foregroundUpdatedHandler != null) {
foregroundUpdatedHandler.handle(null);
}
// if (!runInBackground.get() && foregroundUpdatedHandler != null) {
// foregroundUpdatedHandler.handle(null);
// }
if (statusUpdateHandler != null) {
statusUpdateHandler.handle(process.status());
}
shell.setForegroundJob(null);
// shell.setForegroundJob(null);
jobHandler.onSuspend(this);
return this;
}
@ -147,6 +153,11 @@ public class JobImpl implements Job {
return line;
}
@Override
public boolean isRunInBackground() {
return runInBackground.get();
}
@Override
public Job toBackground() {
if (!this.runInBackground.get()) {
@ -156,10 +167,12 @@ public class JobImpl implements Job {
if (statusUpdateHandler != null) {
statusUpdateHandler.handle(process.status());
}
jobHandler.onBackground(this);
}
}
shell.setForegroundJob(null);
// shell.setForegroundJob(null);
// jobHandler.onBackground(this);
return this;
}
@ -167,15 +180,16 @@ public class JobImpl implements Job {
public Job toForeground() {
if (this.runInBackground.get()) {
if (runInBackground.compareAndSet(true, false)) {
if (foregroundUpdatedHandler != null) {
foregroundUpdatedHandler.handle(this);
}
// if (foregroundUpdatedHandler != null) {
// foregroundUpdatedHandler.handle(this);
// }
process.toForeground();
if (statusUpdateHandler != null) {
statusUpdateHandler.handle(process.status());
}
shell.setForegroundJob(this);
// shell.setForegroundJob(this);
jobHandler.onForeground(this);
}
}
@ -194,26 +208,32 @@ public class JobImpl implements Job {
@Override
public Job run(boolean foreground) {
if (foreground && foregroundUpdatedHandler != null) {
foregroundUpdatedHandler.handle(this);
}
// if (foreground && foregroundUpdatedHandler != null) {
// foregroundUpdatedHandler.handle(this);
// }
actualStatus = ExecStatus.RUNNING;
if (statusUpdateHandler != null) {
statusUpdateHandler.handle(ExecStatus.RUNNING);
}
process.setTty(shell.term());
process.setSession(shell.session());
//TODO process's tty
//process.setTty(shell.term());
process.setSession(this.session);
process.run(foreground);
if (!foreground && foregroundUpdatedHandler != null) {
foregroundUpdatedHandler.handle(null);
}
// if (!foreground && foregroundUpdatedHandler != null) {
// foregroundUpdatedHandler.handle(null);
// }
//
// if (foreground) {
// shell.setForegroundJob(this);
// } else {
// shell.setForegroundJob(null);
// }
if (foreground) {
shell.setForegroundJob(this);
jobHandler.onForeground(this);
} else {
shell.setForegroundJob(null);
jobHandler.onBackground(this);
}
return this;
}
@ -230,9 +250,10 @@ public class JobImpl implements Job {
public void handle(Integer exitCode) {
if (!runInBackground.get() && actualStatus.equals(ExecStatus.RUNNING)) {
// 只有前台在运行的任务，才需要调用foregroundUpdateHandler
if (foregroundUpdatedHandler != null) {
foregroundUpdatedHandler.handle(null);
}
// if (foregroundUpdatedHandler != null) {
// foregroundUpdatedHandler.handle(null);
// }
jobHandler.onTerminated(JobImpl.this);
}
controller.removeJob(JobImpl.this.id);
if (statusUpdateHandler != null) {
@ -240,12 +261,12 @@ public class JobImpl implements Job {
}
terminateFuture.complete();
// save command history
Term term = shell.term();
if (term instanceof TermImpl) {
List<int[]> history = ((TermImpl) term).getReadline().getHistory();
FileUtils.saveCommandHistory(history, new File(Constants.CMD_HISTORY_FILE));
}
// TODO save command history
// Term term = shell.term();
// if (term instanceof TermImpl) {
// List<int[]> history = ((TermImpl) term).getReadline().getHistory();
// FileUtils.saveCommandHistory(history, new File(Constants.CMD_HISTORY_FILE));
// }
}
}

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