[gnome-builder/gnome-builder-3-26] pipeline: protect against spurious builds



commit 8044f3adf4ab52d38919f0e633e944a7e8d93751
Author: Christian Hergert <chergert redhat com>
Date:   Wed Oct 4 17:55:54 2017 -0700

    pipeline: protect against spurious builds
    
    If this is an automated build operation, such as those by
    fetching build flags, try to protect ourselves against spurious
    builds.
    
    A full rebuild or normal build request should still progress as
    normal. This simply checks for advancing up to CONFIGURE when
    there was a previous failure.
    
    Any UI element (such as clicking Build or activating the
    "build" action) will still result in a proper build.

 libide/buildsystem/ide-build-pipeline.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/libide/buildsystem/ide-build-pipeline.c b/libide/buildsystem/ide-build-pipeline.c
index 649389f..92e1e2e 100644
--- a/libide/buildsystem/ide-build-pipeline.c
+++ b/libide/buildsystem/ide-build-pipeline.c
@@ -1539,6 +1539,22 @@ ide_build_pipeline_do_flush (gpointer data)
   g_assert (G_IS_TASK (task_data->task));
 
   /*
+   * If this build request could cause us to spin while we are continually
+   * failing to reach the CONFIGURE stage, protect ourselves as early as we
+   * can. We'll defer to a rebuild request to cause the full thing to build.
+   */
+  if (self->failed &&
+      task_data->type == TASK_BUILD &&
+      task_data->phase <= IDE_BUILD_PHASE_CONFIGURE)
+    {
+      g_task_return_new_error (task,
+                               G_IO_ERROR,
+                               G_IO_ERROR_FAILED,
+                               "The build pipeline is in a failed state and requires a rebuild");
+      IDE_RETURN (G_SOURCE_REMOVE);
+    }
+
+  /*
    * Now mark the pipeline as busy to protect ourself from anything recursively
    * calling into the pipeline.
    */


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