feat(ci): promote Trigger.dev tasks in lockstep with the ECS traffic cutover

.github/scripts/wait-for-ecs-cutover.sh

@@ -0,0 +1,146 @@
+#!/usr/bin/env bash
+# Waits for the ECS blue/green deploy triggered by a specific app image push to
+# reach its traffic cutover (CodeDeploy AllowTraffic == Succeeded on every ECS
+# target), then exits 0.
+#
+# ECR app images use a floating tag (latest/staging) with no git SHA, so the
+# only durable key linking this CI push to its ECS deploy is the image DIGEST.
+# Correlation: image digest -> CodePipeline execution (ECR_Source revision) ->
+# Deploy action externalExecutionId (== CodeDeploy deployment id) -> AllowTraffic.
+#
+# The digest alone is ambiguous: a prior run with the same image could match an
+# older, already-cutover execution and promote too early. SINCE_EPOCH (the time
+# the deploy tag was retagged, i.e. when THIS push's pipeline was triggered)
+# disambiguates — only an execution that started at/after the retag is ours.
+#
+# Usage: wait-for-ecs-cutover.sh <pipeline-name> <image-digest> <since-epoch>
+# Requires: awscli v2, python3, credentials with codedeploy + codepipeline read.
+set -euo pipefail
+
+PIPELINE="${1:?pipeline name required}"
+DIGEST="${2:?image digest required}"
+SINCE_EPOCH="${3:?since-epoch (retag time) required}"
+
+POLL_INTERVAL="${POLL_INTERVAL:-15}"
+# 70 min covers a prod deploy whose Deploy stage is queued behind a prior
+# deploy's ~50-min termination bake before its own traffic shift begins.
+OVERALL_TIMEOUT="${OVERALL_TIMEOUT:-4200}"
+# Tolerate minor clock skew between the runner (retag time) and CodePipeline.
+SINCE_SKEW="${SINCE_SKEW:-120}"
+
+deadline=$(( $(date +%s) + OVERALL_TIMEOUT ))
+remaining() { echo $(( deadline - $(date +%s) )); }
+log() { echo "[wait-for-ecs-cutover] $*"; }
+fail_if_expired() {
+  if [ "$(remaining)" -le 0 ]; then
+    log "ERROR: timed out after ${OVERALL_TIMEOUT}s waiting for: $1"
+    exit 1
+  fi
+}
+
+log "Pipeline: $PIPELINE"
+log "Target app image digest: $DIGEST"
+log "Requiring execution started at/after epoch $SINCE_EPOCH (minus ${SINCE_SKEW}s skew)"
+
+# Phase A: find the newest pipeline execution whose ECR source revision matches
+# our digest AND that started at/after the retag. The since filter rejects a
+# stale historical execution reusing the same digest. --max-items bounds the
+# fetch (the CLI otherwise auto-paginates the whole history).
+EXECUTION_ID=""
+while [ -z "$EXECUTION_ID" ]; do
+  fail_if_expired "pipeline execution matching digest since retag"
+  matches=$(aws codepipeline list-pipeline-executions \
+        --pipeline-name "$PIPELINE" --max-items 30 \
+        --query "pipelineExecutionSummaries[?sourceRevisions[?actionName=='ECR_Source' && revisionId=='$DIGEST']].[startTime, pipelineExecutionId]" \
+        --output text 2>/dev/null || true)
+  EXECUTION_ID=$(printf '%s\n' "$matches" | SINCE="$SINCE_EPOCH" SKEW="$SINCE_SKEW" python3 -c '
+import sys, os, datetime
+since = float(os.environ["SINCE"]) - float(os.environ["SKEW"])
+best_epoch = None
+best_id = None
+for line in sys.stdin:
+    parts = line.rstrip("\n").split("\t")
+    if len(parts) < 2:
+        continue
+    ts, eid = parts[0].strip(), parts[1].strip()
+    if not ts or not eid or "-" not in eid:
+        continue
+    try:
+        epoch = float(ts)
+    except ValueError:
+        try:
+            epoch = datetime.datetime.fromisoformat(ts.replace("Z", "+00:00")).timestamp()
+        except ValueError:
+            continue
+    if epoch >= since and (best_epoch is None or epoch > best_epoch):
+        best_epoch, best_id = epoch, eid
+print(best_id or "")
+' 2>/dev/null || true)
+  if [ -z "$EXECUTION_ID" ]; then
+    log "No matching post-retag pipeline execution yet; retry in ${POLL_INTERVAL}s (remaining $(remaining)s)"
+    sleep "$POLL_INTERVAL"
+  fi
+done
+log "Matched pipeline execution: $EXECUTION_ID"
+
+# Phase B: resolve the CodeDeploy deployment id from the Deploy action. This may
+# stay empty for a while if the Deploy stage is queued behind a prior deploy.
+DEPLOYMENT_ID=""
+while [ -z "$DEPLOYMENT_ID" ] || [ "$DEPLOYMENT_ID" = "None" ]; do
+  fail_if_expired "CodeDeploy deployment id (Deploy stage may be queued behind a prior deploy's bake)"
+  status=$(aws codepipeline get-pipeline-execution \
+        --pipeline-name "$PIPELINE" --pipeline-execution-id "$EXECUTION_ID" \
+        --query 'pipelineExecution.status' --output text 2>/dev/null || true)
+  case "$status" in
+    Failed|Stopped|Superseded)
+      log "ERROR: pipeline execution $EXECUTION_ID ended in status $status before deploy"
+      exit 1
+      ;;
+  esac
+  DEPLOYMENT_ID=$(aws codepipeline list-action-executions \
+        --pipeline-name "$PIPELINE" \
+        --filter pipelineExecutionId="$EXECUTION_ID" \
+        --query "actionExecutionDetails[?stageName=='Deploy'].output.executionResult.externalExecutionId | [0]" \
+        --output text 2>/dev/null || true)
+  if [ -z "$DEPLOYMENT_ID" ] || [ "$DEPLOYMENT_ID" = "None" ]; then
+    log "Deploy stage not started yet (pipeline status: $status); retry in ${POLL_INTERVAL}s (remaining $(remaining)s)"
+    sleep "$POLL_INTERVAL"
+  fi
+done
+log "CodeDeploy deployment: $DEPLOYMENT_ID"
+
+# Phase C: wait for the traffic cutover. Require AllowTraffic == Succeeded on
+# EVERY ECS target, so a multi-target deploy can't promote while one target is
+# still mid-cutover or failed.
+while true; do
+  fail_if_expired "AllowTraffic (traffic cutover) on all targets"
+  dstatus=$(aws deploy get-deployment --deployment-id "$DEPLOYMENT_ID" \
+        --query 'deploymentInfo.status' --output text 2>/dev/null || true)
+  case "$dstatus" in
+    Failed|Stopped)
+      log "ERROR: CodeDeploy deployment $DEPLOYMENT_ID ended in status $dstatus; not promoting"
+      exit 1
+      ;;
+  esac
+  target_ids=$(aws deploy list-deployment-targets --deployment-id "$DEPLOYMENT_ID" \
+        --query 'targetIds' --output text 2>/dev/null || true)
+  if [ -n "$target_ids" ] && [ "$target_ids" != "None" ]; then
+    all_ok=1
+    ntargets=0
+    for tid in $target_ids; do
+      ntargets=$((ntargets + 1))
+      at_status=$(aws deploy get-deployment-target --deployment-id "$DEPLOYMENT_ID" --target-id "$tid" \
+            --query "deploymentTarget.ecsTarget.lifecycleEvents[?lifecycleEventName=='AllowTraffic'].status | [0]" \
+            --output text 2>/dev/null || true)
+      if [ "$at_status" != "Succeeded" ]; then
+        all_ok=0
+      fi
+    done
+    if [ "$ntargets" -gt 0 ] && [ "$all_ok" = "1" ]; then
+      log "Traffic cutover complete (AllowTraffic Succeeded on all $ntargets target(s)) for $DEPLOYMENT_ID"
+      exit 0
+    fi
+  fi
+  log "Deployment $DEPLOYMENT_ID status=$dstatus; not all targets past AllowTraffic; wait ${POLL_INTERVAL}s (remaining $(remaining)s)"
+  sleep "$POLL_INTERVAL"
+done