jenkins: retry build_devel (#30628)

* will it work

* retry build devel

* correct p[ath

* try a failure

* Revert "try a failure"

This reverts commit ba4e6a0a2096b94887fcfbf7d011e34aa2a16c41.
old-commit-hash: 36bebb1aa0

Jenkinsfile

@@ -158,7 +158,7 @@ node {
       // tici tests
       'onroad tests': {
         deviceStage("onroad", "tici-needs-can", ["SKIP_COPY=1"], [
-          ["build master-ci", "cd $SOURCE_DIR/release && TARGET_DIR=$TEST_DIR ./build_devel.sh"],
+          ["build master-ci", "cd $SOURCE_DIR/release && TARGET_DIR=$TEST_DIR $SOURCE_DIR/scripts/retry.sh ./build_devel.sh"],
           ["build openpilot", "cd selfdrive/manager && ./build.py"],
           ["check dirty", "release/check-dirty.sh"],
           ["onroad tests", "pytest selfdrive/test/test_onroad.py -s"],

release/build_devel.sh

@@ -22,6 +22,7 @@ pre-commit uninstall || true
 
 echo "[-] bringing master-ci and devel in sync T=$SECONDS"
 cd $TARGET_DIR
+
 git fetch --depth 1 origin master-ci
 git fetch --depth 1 origin devel
 

scripts/retry.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+function fail {
+  echo $1 >&2
+  exit 1
+}
+
+function retry {
+  local n=1
+  local max=3 # 3 retries before failure
+  local delay=5 # delay between retries, 5 seconds
+  while true; do
+    echo "Running command '$@' with retry, attempt $n/$max"
+    "$@" && break || {
+      if [[ $n -lt $max ]]; then
+        ((n++))
+        sleep $delay;
+      else
+        fail "The command has failed after $n attempts."
+      fi
+    }
+  done
+}
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+    retry "$@"
+fi