Merge ~kzapalowicz/snappy-hwe-snaps/+git/build-scripts:feature/snap-build-job-honores-default-arches into ~snappy-hwe-team/snappy-hwe-snaps/+git/build-scripts:master

[Konrad Zapałowicz]

scripts: fix build snap on unsupported arch

By default the snap has been build for all arches available, that is:
armhf, arm64, amd64 and i386. Not all snaps, however, are build for
all of those archs and in such situation the release job fails as a
whole.

This commit adds code to query the arches enabled by default for a
-publish job so that the snap is build only for those that are
supported.

scripts: fix build snap on unsupported arch

By default the snap has been build for all arches available, that is:
armhf, arm64, amd64 and i386. Not all snaps, however, are build for
all of those archs and in such situation the release job fails as a
whole.

This commit adds code to query the arches enabled by default for a
-publish job so that the snap is build only for those that are
supported.

[System Enablement Bot (system-enablement-ci-bot)]

PASSED: Continuous integration, rev:f8f5be32f83f65e232a5de5602f43dbccf38a731
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/985/
Executed test runs:
    SUCCESS: https://jenkins.canonical.com/system-enablement/job/generic-test-snap/678
    None: https://jenkins.canonical.com/system-enablement/job/generic-update-snap-mp/893/console

Click here to trigger a rebuild:
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/985/rebuild

review: Approve (continuous-integration)

[System Enablement Bot (system-enablement-ci-bot)]

PASSED: Continuous integration, rev:ab925527322cb91d19d9145b3389975847c18a26
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/987/
Executed test runs:
    SUCCESS: https://jenkins.canonical.com/system-enablement/job/generic-test-snap/679
    None: https://jenkins.canonical.com/system-enablement/job/generic-update-snap-mp/894/console

Click here to trigger a rebuild:
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/987/rebuild

review: Approve (continuous-integration)

[System Enablement Bot (system-enablement-ci-bot)]

PASSED: Continuous integration, rev:1025d0e9ec1fc82a8a96e53986c86cff48ab80ff
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/992/
Executed test runs:
    SUCCESS: https://jenkins.canonical.com/system-enablement/job/generic-test-snap/682
    None: https://jenkins.canonical.com/system-enablement/job/generic-update-snap-mp/900/console

Click here to trigger a rebuild:
https://jenkins.canonical.com/system-enablement/job/generic-build-snap/992/rebuild

review: Approve (continuous-integration)

[Simon Fels (morphis)]

LGTM. Need to rework https://code.launchpad.net/~morphis/snappy-hwe-snaps/+git/build-scripts/+merge/317594 a bit when this is merged but that isn't a problem.

review: Approve

diff --git a/scripts/trigger-lp-build.py b/scripts/trigger-lp-build.py
index 842acd5..7f0f544 100755
--- a/scripts/trigger-lp-build.py
+++ b/scripts/trigger-lp-build.py
@@ -21,7 +21,6 @@ parser.add_argument('-p', '--publish', action='store_true',
 
 args = vars(parser.parse_args())
 
-arches = ['amd64', 'i386', 'armhf', 'arm64']
 series = 'xenial'
 
 lp_app = se_utils.get_config_option("lp_app")
@@ -49,6 +48,9 @@ print("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")
 stamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
 print("Trying to trigger builds at: {}".format(stamp))
 
+# Not every snap is build agains all arches.
+arches = [processor.name for processor in snap.processors]
+
 # We will now trigger a build for each whitelisted architecture, collect the
 # build job url and the wait for all builds to finish and collect their results
 # to vote for a successful or failed build.