[gnome-ostree] build: Write out to status file which component failed

[Colin Walters <walters src gnome org>]

commit c4a04508168de3053992b0c7ae0f292b9deef0f4
Author: Colin Walters <walters verbum org>
Date:   Mon Aug 19 14:21:09 2013 -0400

    build: Write out to status file which component failed
    
    And while we're here, create a helper function (this should really go
    in task.js probably).

 src/js/tasks/task-build.js |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/src/js/tasks/task-build.js b/src/js/tasks/task-build.js
index bb0fc63..4a18b4f 100644
--- a/src/js/tasks/task-build.js
+++ b/src/js/tasks/task-build.js
@@ -657,6 +657,7 @@ const TaskBuild = new Lang.Class({
        try {
            proc.wait_sync_check(cancellable);
        } catch (e) {
+           this._writeStatus('failed: ' + basename, cancellable);
            print("Build of " + basename + " failed");
            throw e;
        }
@@ -1149,6 +1150,13 @@ const TaskBuild = new Lang.Class({
        throw new Error("Failed to find target " + name);
     },
 
+    _writeStatus: function(text, cancellable) {
+       let statusTxtPath = Gio.File.new_for_path('status.txt');
+       statusTxtPath.replace_contents(text + '\n', null, false,
+                                      Gio.FileCreateFlags.REPLACE_DESTINATION,
+                                      cancellable);
+    },
+
     execute: function(cancellable) {
 
        this._linuxUserChrootPath = BuildUtil.findUserChrootPath();
@@ -1562,9 +1570,7 @@ const TaskBuild = new Lang.Class({
        if (composeTreeTaskError)
            throw new Error(composeTreeTaskError);
 
-       let statusTxtPath = Gio.File.new_for_path('status.txt');
-       statusTxtPath.replace_contents('built: ' + this._rebuiltComponents.join(' ') + '\n', null, false,
-                                      Gio.FileCreateFlags.REPLACE_DESTINATION, cancellable);
+       this._writeStatus('built: ' + this._rebuiltComponents.join(' '), cancellable);
 
        let [path, modified] = builddb.store(buildData, cancellable);
        print("Build complete: " + path.get_path());