round-robin.sh: Add "push" option to handling of base-artifacsts

... and baseline branches.

Push results from current build (whatever they are, regressions are
ignored) as new commit to base-artifacts, and update baseline
branches.  This is useful for user projects, e.g., to generate
historical results for several toolchain versions.

Change-Id: I3d700dcb31532003fd34eaec00d46b62982bb834

1 files changed, 33 insertions, 8 deletions

diff --git a/round-robin.sh b/round-robin.sh
index 15a52641..363924e9 100644
--- a/round-robin.sh
+++ b/round-robin.sh
@@ -29,12 +29,16 @@ declare -gA rr
 #rr[mode]="$mode"
 
 # How to handle baseline:
+# - init:  use "empty" results for base-artifacts, which will make current
+#          build successful.  Push our artifacts as the one and only entry.
 # - update: update baseline branches of base-artifacts and components' repos
 #           on success (generate trigger files for bisection on failure).
 # - reset: ignore failures in check_regression(), which will make current
 #          build successful.  Push our artifacts to the top of base-artifacts/.
-# - init:  use "empty" results for base-artifacts, which will make current
-#          build successful.  Push our artifacts as the one and only entry.
+# - push:  push results from current build (whatever they are, regressions are
+#          ignored) as new commit to base-artifacts, and update baseline
+#          branches.  This is useful for user projects, e.g., to generate
+#          historical results for several toolchain versions.
 # - rebase: treat results of this build as historically eldest, and
 #           rebase base-artifacts commits on top of this build's artifacts.
 #rr[update_baseline]=update/reset/init/rebase
@@ -494,13 +498,26 @@ check_regression ()
     local score
     score=$(tail -n1 ${rr[top_artifacts]}/results)
 
-    if [ x"${rr[update_baseline]}" = x"update" ]; then
+    if [ x"${rr[update_baseline]}" = x"update" \
+	  -o x"${rr[update_baseline]}" = x"push" ]; then
 	${rr[no_regression_p]} base-artifacts ${rr[top_artifacts]} &
 	if wait $!; then
 	    return
 	fi
 
 	local single_component=$(print_single_updated_component)
+	local trigger_dest
+
+	if [ x"${rr[update_baseline]}" = x"update" ]; then
+	    # When "updating" baseline place trigger-* files at top level
+	    # where jenkins expects them -- and trigger the followup builds.
+	    trigger_dest="${rr[top_artifacts]}"
+	else
+	    # We don't want to trigger follow up builds when "pushing"
+	    # baseline.  So, for the record, place trigger-* files in
+	    # the step's artifacts directory.
+	    trigger_dest="$run_step_artifacts"
+	fi
 
 	# 1. If $score is less-than 0, then the regression is uninteresting,
 	# don't bisect.
@@ -526,7 +543,7 @@ check_regression ()
 		    else
 			echo "${c}_branch=baseline"
 		    fi
-		done > ${rr[top_artifacts]}/trigger-build-$update_components2
+		done > $trigger_dest/trigger-build-$update_components2
 	    done < <(${rr[breakup_updated_components]})
 	else
 	    # Bisect failures in all steps after "-1" step.
@@ -534,15 +551,21 @@ check_regression ()
 	    baseline_rev=$(git_rev_parse_long $single_component ${rr[baseline_branch]} baseline)
 	    cur_rev=$(git -C $single_component rev-parse HEAD)
 
-	    cat > ${rr[top_artifacts]}/trigger-bisect <<EOF
+	    cat > $trigger_dest/trigger-bisect <<EOF
 current_project=$single_component
 baseline_branch=$baseline_rev
 bad_branch=$cur_rev
 EOF
 	fi
 
-	# Fail.
-	false
+	if [ x"${rr[update_baseline]}" = x"update" ]; then
+	    # Fail.
+	    false
+	else
+	    # Compare results to generate logs and other artifacts,
+	    # but we don't really care about regressions.
+	    :
+	fi
     elif [ x"${rr[update_baseline]}" = x"rebase" ]; then
 	local base_artifacts_head base_artifacts_tail
 	base_artifacts_head=$(git -C base-artifacts rev-parse HEAD)
@@ -569,7 +592,9 @@ update_baseline ()
 
     local amend=""
     local rebase_head rebase_tail
-    if [ x"${rr[update_baseline]}" != x"rebase" ]; then
+    if [ x"${rr[update_baseline]}" = x"push" ]; then
+	:
+    elif [ x"${rr[update_baseline]}" != x"rebase" ]; then
 	local prev_head=""
 
 	# We discard baseline entries for results worse or same than