From: Thanh Ha <thanh.ha@linuxfoundation.org>
Date: Wed, 27 Mar 2019 17:27:19 +0000 (-0400)
Subject: Allow jjb-workers to be configurable
X-Git-Tag: v0.35.0~5
X-Git-Url: https://gerrit.linuxfoundation.org/infra/gitweb?a=commitdiff_plain;h=df1a4e762a9eee97e0239a2c66217b5fc6e9452d;p=releng%2Fglobal-jjb.git

Allow jjb-workers to be configurable

Default it to the number of CPU cores available on the system.

Issue: RELENG-917
Change-Id: I5f65ec7d7142f1a778b6e31cc6700ca2bca1ef88
Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>
---

diff --git a/docs/jjb/lf-ci-jobs.rst b/docs/jjb/lf-ci-jobs.rst
index 6184284f..5ad9b6a3 100644
--- a/docs/jjb/lf-ci-jobs.rst
+++ b/docs/jjb/lf-ci-jobs.rst
@@ -424,6 +424,8 @@ Runs `jenkins-jobs update` to update production job configuration
     :build-timeout: Timeout in minutes before aborting build. (default: 10)
     :git-url: URL clone project from. (default: $GIT_URL/$PROJECT)
     :jjb-cache: JJB cache location. (default: $HOME/.cache/jenkins_jobs)
+    :jjb-workers: Number of threads to run **update** with. Set to 0 by default
+        which is equivalent to the number of available CPU cores. (default: 0)
     :jjb-version: JJB version to install. (default: see job-template)
     :stream: Keyword that can be used to represent a release code-name.
         Often the same as the branch. (default: master)
diff --git a/jjb/lf-ci-jobs.yaml b/jjb/lf-ci-jobs.yaml
index 8a49d036..ebf637fd 100644
--- a/jjb/lf-ci-jobs.yaml
+++ b/jjb/lf-ci-jobs.yaml
@@ -719,6 +719,8 @@
     # Default parameters #
     ######################
 
+    jjb-workers: 0
+
     gerrit_merge_triggers:
       - change-merged-event
       - comment-added-contains-event:
@@ -731,6 +733,8 @@
     builders:
       - lf-infra-pre-build
       - lf-infra-jjbini
+      - inject:
+          properties-content: JJB_WORKERS={jjb-workers}
       - shell: !include-raw-escape:
           - ../shell/jjb-install.sh
           - ../shell/jjb-merge-job.sh
diff --git a/releasenotes/notes/jjb-workers-9459a54a5ecb91e8.yaml b/releasenotes/notes/jjb-workers-9459a54a5ecb91e8.yaml
new file mode 100644
index 00000000..fc11d250
--- /dev/null
+++ b/releasenotes/notes/jjb-workers-9459a54a5ecb91e8.yaml
@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    The **jjb-merge** job now has a new parameter ``jjb-workers`` to allow
+    configuration of the number of threads to run update with. Default is *0*
+    which is equivalent to the number of CPU cores available on the system.
diff --git a/shell/jjb-merge-job.sh b/shell/jjb-merge-job.sh
index 090e9153..0a05c4f0 100644
--- a/shell/jjb-merge-job.sh
+++ b/shell/jjb-merge-job.sh
@@ -10,7 +10,9 @@
 ##############################################################################
 echo "---> jjb-merge-job.sh"
 
+workers="${JJB_WORKERS:-0}"
+
 # Ensure we fail the job if any steps fail.
 set -eu -o pipefail
 
-jenkins-jobs update --recursive --delete-old --workers 4 jjb/
+jenkins-jobs update --recursive --delete-old --workers "$workers" jjb/