Add a github cron to check the hydra status

Add a regular github action that will check the status of the latest
hydra evaluation.

Things aren’t ideal right now because this job will only notify “the
user who last modified the cron syntax in the workflow file” (so myself
atm). But at least that’ll give a notification for failing hydra jobs

1 files changed, 28 insertions, 0 deletions

diff --git a/scripts/check-hydra-status.sh b/scripts/check-hydra-status.sh
new file mode 100644
index 000000000..c1d2d7c40
--- /dev/null
+++ b/scripts/check-hydra-status.sh
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+# set -x
+
+
+# mapfile BUILDS_FOR_LATEST_EVAL < <(
+# curl -H 'Accept: application/json' https://hydra.nixos.org/jobset/nix/master/evals | \
+#   jq -r '.evals[0].builds[] | @sh')
+BUILDS_FOR_LATEST_EVAL=$(
+curl -sS -H 'Accept: application/json' https://hydra.nixos.org/jobset/nix/master/evals | \
+  jq -r '.evals[0].builds[]')
+
+someBuildFailed=0
+
+for buildId in $BUILDS_FOR_LATEST_EVAL; do
+  buildInfo=$(curl -sS -H 'Accept: application/json' "https://hydra.nixos.org/build/$buildId")
+
+  buildStatus=$(echo "$buildInfo" | \
+    jq -r '.buildstatus')
+
+  if [[ "$buildStatus" -ne 0 ]]; then
+    someBuildFailed=1
+    echo "Job “$(echo "$buildInfo" | jq -r '.job')” failed on hydra"
+  fi
+done
+
+exit "$someBuildFailed"