Merge "Fix the buck springboard to always work from Eclipse"

gerrit-pgm/src/main/java/com/google/gerrit/pgm/http/jetty/JettyServer.java

@@ -17,6 +17,7 @@ package com.google.gerrit.pgm.http.jetty;
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 import static java.util.concurrent.TimeUnit.SECONDS;
 
+import com.google.common.base.Objects;
 import com.google.common.io.ByteStreams;
 import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.launcher.GerritLauncher;
@@ -54,6 +55,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -68,6 +70,7 @@ import java.util.EnumSet;
 import java.util.Enumeration;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Properties;
 import java.util.Set;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
@@ -488,7 +491,7 @@ public class JettyServer {
       String target = targetForBrowser(System.getProperty("gerrit.browser"));
       File gen = new File(dir, "gen");
       String out = new File(new File(gen, pkg), target).getAbsolutePath();
-      build(dir.getParentFile(), out + ".rebuild", "//" + pkg + ":" + target);
+      build(dir.getParentFile(), gen, "//" + pkg + ":" + target);
       return unpackWar(new File(out + ".zip"));
     } else if ("target".equals(dir.getName())) {
       return useMavenDeveloperBuild(dir);
@@ -507,15 +510,19 @@ public class JettyServer {
     }
   }
 
-  private static void build(File root, String cmd, String target)
+  private static void build(File root, File gen, String target)
       throws IOException {
-    long start = System.currentTimeMillis();
     log.info("buck build " + target);
-    Process rebuild = new ProcessBuilder(cmd, target)
+    Properties properties = loadBuckProperties(gen);
+    String buck = Objects.firstNonNull(properties.getProperty("buck"), "buck");
+    ProcessBuilder proc = new ProcessBuilder(buck, "build", target)
         .directory(root)
-        .redirectErrorStream(true)
+        .redirectErrorStream(true);
-        .start();
+    if (properties.contains("PATH")) {
-
+      proc.environment().put("PATH", properties.getProperty("PATH"));
+    }
+    long start = System.currentTimeMillis();
+    Process rebuild = proc.start();
     byte[] out;
     InputStream in = rebuild.getInputStream();
     try {
@@ -529,7 +536,7 @@ public class JettyServer {
     try {
       status = rebuild.waitFor();
     } catch (InterruptedException e) {
-      throw new InterruptedIOException("interrupted waiting for " + cmd);
+      throw new InterruptedIOException("interrupted waiting for " + buck);
     }
     if (status != 0) {
       System.err.write(out);
@@ -541,6 +548,19 @@ public class JettyServer {
     log.info(String.format("UPDATED    %s in %.3fs", target, time / 1000.0));
   }
 
+  private static Properties loadBuckProperties(File gen)
+      throws FileNotFoundException, IOException {
+    Properties properties = new Properties();
+    InputStream in = new FileInputStream(
+        new File(new File(gen, "tools"), "buck.properties"));
+    try {
+      properties.load(in);
+    } finally {
+      in.close();
+    }
+    return properties;
+  }
+
   private Resource useMavenDeveloperBuild(File dir) throws IOException {
     dir = dir.getParentFile(); // pop target
     dir = dir.getParentFile(); // pop the module we are in

lib/gwt/compiler.py

@@ -16,7 +16,7 @@
 from __future__ import print_function
 
 from multiprocessing import cpu_count
-from os import environ, fchmod, makedirs, mkdir, path
+from os import environ, makedirs, mkdir, path
 from subprocess import Popen, PIPE
 from sys import argv, stderr
 
@@ -60,11 +60,3 @@ out, err = gwt.communicate()
 if gwt.returncode != 0:
   print(out + err, file=stderr)
   exit(gwt.returncode)
-
-with open(rebuild, 'w') as fd:
-  def shquote(s):
-    return s.replace("'", "'\\''")
-  print('#!/bin/sh', file=fd)
-  print("PATH='%s'" % shquote(environ['PATH']), file=fd)
-  print('buck build "$1" || exit', file=fd)
-  fchmod(fd.fileno(), 0o755)

tools/BUCK

@@ -9,3 +9,21 @@ python_binary(
   main = 'pack_war.py',
   visibility = ['PUBLIC'],
 )
+
+
+def shquote(s):
+  return s.replace("'", "'\\''")
+
+def os_path():
+  from os import environ
+  return environ.get('PATH')
+
+genrule(
+  name = 'buck.properties',
+  cmd = 'echo buck=`which buck`>$OUT;' +
+    ("echo PATH=\''%s'\' >>$OUT;" % shquote(os_path())),
+  srcs = [],
+  deps = [],
+  out = 'buck.properties',
+  visibility = ['PUBLIC'],
+)

tools/eclipse/BUCK

@@ -7,6 +7,7 @@ genrule(
   deps = [
     ':_classpath',
     ':_project',
+    '//tools:buck.properties',
   ],
   out = '__fake.eclipse__',
 )
@@ -18,6 +19,7 @@ genrule(
   deps = [
     ':_classpath_nocompile',
     ':_project',
+    '//tools:buck.properties',
   ],
   out = '__fake.eclipse__',
 )