478 lines
18 KiB
Bash
478 lines
18 KiB
Bash
#!/bin/dash
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# Reconcile loop for gitea-runner-controller.
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# Owns: TTL sweep, orphan-VM sweep, deferred-job retry, stale-runner dereg,
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# startup convergence. Runs forever under systemd; webhook service is separate.
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gcr_record_age_sec() {
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created_at="$(gcr_record_field "$1" created_at)"
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now="$(gcr_now_epoch)"
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case "$created_at" in
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''|*[!0-9]*) printf '%s' 999999 ;;
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*) printf '%s' "$((now - created_at))" ;;
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esac
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}
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gcr_sweep_ttl() {
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for f in $(gcr_active_records); do
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rec="$(cat "$f")"
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status="$(gcr_record_field "$rec" status)"
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job_id="$(gcr_record_field "$rec" job_id)"
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attempt="$(gcr_record_field "$rec" run_attempt)"
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if [ "$status" = "idle_vm" ]; then
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gcr_lock_acquire idle-pool || continue
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rec="$(gcr_record_get "$job_id" "$attempt")"
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if [ -z "$rec" ] || [ "$(gcr_record_field "$rec" status)" != "idle_vm" ]; then
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gcr_lock_release idle-pool
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continue
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fi
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if gcr_idle_record_unexpired "$rec"; then
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gcr_lock_release idle-pool
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continue
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fi
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vm_id="$(gcr_record_field "$rec" vm_id)"
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if gcr_record_vm_owned_elsewhere "$vm_id" "$job_id" "$attempt"; then
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gcr_log warn --ns=sweep "removing superseded idle record job=$job_id vm=$vm_id"
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gcr_record_del "$job_id" "$attempt"
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gcr_lock_release idle-pool
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continue
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fi
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gcr_log info --ns=sweep "idle slot expired job=$job_id vm=$vm_id"
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if [ -n "$vm_id" ] && [ "$vm_id" != "null" ] && [ "$vm_id" != "0" ]; then
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gcr_vm_destroy "$vm_id" || true
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gcr_event "vm-destroyed" "$job_id" "{\"vm_id\":$vm_id,\"reason\":\"idle-expired\"}"
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fi
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gcr_record_del "$job_id" "$attempt"
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gcr_lock_release idle-pool
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continue
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fi
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[ "$status" = "vm_active" ] || [ "$status" = "pending_vm" ] || continue
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ttl_min="$(gcr_record_field "$rec" ttl_min)"
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case "$ttl_min" in ''|*[!0-9]*) continue ;; esac
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max_sec="$((ttl_min * 60))"
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age="$(gcr_record_age_sec "$rec")"
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if [ "$age" -ge "$max_sec" ]; then
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key="$(gcr_alloc_key "$job_id" "$attempt")"
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gcr_lock_acquire "$key" || continue
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rec="$(gcr_record_get "$job_id" "$attempt")"
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case "$(gcr_record_field "$rec" status)" in
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pending_vm|vm_active) ;;
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*) gcr_lock_release "$key"; continue ;;
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esac
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ttl_min="$(gcr_record_field "$rec" ttl_min)"
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case "$ttl_min" in
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''|*[!0-9]*) gcr_lock_release "$key"; continue ;;
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esac
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max_sec="$((ttl_min * 60))"
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age="$(gcr_record_age_sec "$rec")"
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if [ "$age" -lt "$max_sec" ]; then
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gcr_lock_release "$key"
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continue
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fi
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vm_id="$(gcr_record_field "$rec" vm_id)"
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gcr_log warn --ns=sweep "TTL exceeded job=$job_id age=${age}s max=${max_sec}s"
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if [ -n "$vm_id" ] && [ "$vm_id" != "null" ] && [ "$vm_id" != "0" ]; then
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ip="$(gcr_vm_public_ip "$vm_id" || true)"
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gcr_vm_collect_diagnostics "$vm_id" "$ip" "$job_id" ttl || true
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gcr_vm_destroy "$vm_id" || true
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gcr_event "vm-destroyed" "$job_id" "{\"vm_id\":$vm_id,\"reason\":\"ttl\"}"
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fi
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gcr_event "job-ttl-expired" "$job_id" "{\"age\":$age}"
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gcr_record_del "$job_id" "$attempt"
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gcr_lock_release "$key"
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fi
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done
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}
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gcr_sweep_orphan_vms() {
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gcr_lock_acquire admission || return 0
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vms_json="$(gcr_vm_list_managed)" || {
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gcr_lock_release admission
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return 0
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}
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if ! gcr_lock_acquire idle-pool; then
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gcr_lock_release admission
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return 0
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fi
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count="$(printf '%s' "$vms_json" | jq 'length')"
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i=0
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while [ "$i" -lt "$count" ]; do
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vm="$(printf '%s' "$vms_json" | jq -c ".[$i]")"
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vm_id="$(printf '%s' "$vm" | jq -r '.id')"
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jid="$(printf '%s' "$vm" | jq -r '.labels["gcr.job-id"] // ""')"
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att="$(printf '%s' "$vm" | jq -r '.labels["gcr.run-attempt"] // ""')"
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if ! gcr_record_exists_for_vm_id "$vm_id"; then
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gcr_log warn --ns=sweep "orphan VM $vm_id job=$jid attempt=$att -> destroy"
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gcr_vm_destroy "$vm_id" || true
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gcr_event "orphan-vm-destroyed" "${jid:-unknown}" "{\"vm_id\":$vm_id}"
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fi
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i=$((i + 1))
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done
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gcr_lock_release idle-pool
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gcr_lock_release admission
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}
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gcr_alloc_deferred() {
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job_id="$1"; attempt="$2"
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key="$(gcr_alloc_key "$job_id" "$attempt")"
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gcr_lock_acquire "$key" || return 0
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rec="$(gcr_record_get "$job_id" "$attempt")"
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if [ -z "$rec" ] || [ "$(gcr_record_field "$rec" status)" != "deferred" ]; then
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gcr_lock_release "$key"
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return 0
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fi
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repo="$(gcr_record_field "$rec" repo)"
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label="$(gcr_record_field "$rec" label)"
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state="$(gcr_gitea_job_state "$repo" "$job_id")" || {
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gcr_lock_release "$key"
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return 0
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}
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case "$state" in
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completed:*)
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gcr_log info --ns=alloc "deferred job=$job_id already terminal ($state), dropping record"
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gcr_record_del "$job_id" "$attempt"
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gcr_lock_release "$key"
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return 0
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;;
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esac
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profile="$(gcr_label_profile "$label")" || {
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gcr_lock_release "$key"
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return 0
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}
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set -- $profile
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server_type="$1"; ttl_min="$2"; rate="$3"
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gcr_lock_acquire admission || {
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gcr_lock_release "$key"
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return 0
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}
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active="$(gcr_count_active)"
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repo_active="$(gcr_count_active_repo "$repo")"
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if [ "$active" -ge "${GCR_CONCURRENCY_CAP:-2}" ] \
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|| [ "$repo_active" -ge "${GCR_PER_REPO_CAP:-1}" ]; then
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gcr_lock_release admission
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gcr_lock_release "$key"
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return 0
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fi
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claim_status=0
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gcr_claim_idle "$job_id" "$attempt" "$repo" "$label" || claim_status="$?"
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if [ "$claim_status" -eq 0 ]; then
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reused="$(gcr_record_get "$job_id" "$attempt")"
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vm_id="$(gcr_record_field "$reused" vm_id)"
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if gcr_vm_runner_service "$vm_id" start \
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&& gcr_gitea_runner_disabled "$repo" "$(gcr_record_field "$reused" vm_name)" false; then
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reused="$(gcr_record_get "$job_id" "$attempt")"
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reused="$(printf '%s' "$reused" | jq -c '.bootstrapped = true | del(.reused_vm)')"
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gcr_record_put "$job_id" "$attempt" "$reused"
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else
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gcr_gitea_runner_disabled "$repo" "$(gcr_record_field "$reused" vm_name)" true || true
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gcr_event "vm-reuse-start-failed" "$job_id" "{\"vm_id\":$vm_id,\"via\":\"deferred-retry\"}"
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fi
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gcr_lock_release admission
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gcr_lock_release "$key"
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gcr_event "vm-reused" "$job_id" "{\"vm_id\":$vm_id,\"label\":\"$label\",\"via\":\"deferred-retry\"}"
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gcr_log info --ns=alloc "deferred job=$job_id reused vm=$vm_id"
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return 0
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fi
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if [ "$claim_status" -eq 2 ]; then
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gcr_lock_release admission
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gcr_lock_release "$key"
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return 0
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fi
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gcr_budget_can_add "$rate" "$ttl_min" || {
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gcr_lock_release admission
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gcr_lock_release "$key"
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return 0
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}
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reg_token="$(gcr_gitea_registration_token "$repo")" || {
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gcr_lock_release admission
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gcr_lock_release "$key"
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return 0
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}
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vm_name="gcr-${job_id}-${attempt}"
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created_at="$(gcr_now_epoch)"
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vm_id="$(gcr_vm_create "$vm_name" "$label" "$server_type" "$ttl_min" \
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"$reg_token" "$job_id" "$attempt" "$repo")" && [ -n "$vm_id" ] || {
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gcr_lock_release admission
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gcr_lock_release "$key"
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return 0
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}
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gcr_budget_add "$rate" "$ttl_min"
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rec="$(jq -n --arg j "$job_id" --arg a "$attempt" --arg r "$repo" \
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--arg l "$label" --arg t "$created_at" --arg v "$vm_id" \
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--arg vn "$vm_name" --arg ttl "$ttl_min" \
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'{job_id:$j, run_attempt:$a, repo:$r, label:$l,
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created_at:$t, ttl_min:($ttl|tonumber), vm_id:($v|tonumber),
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vm_name:$vn, bootstrapped:false, status:"pending_vm"}')"
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if ! gcr_record_put "$job_id" "$attempt" "$rec"; then
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gcr_vm_destroy "$vm_id" || true
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gcr_lock_release admission
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gcr_lock_release "$key"
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return 0
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fi
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gcr_lock_release admission
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gcr_lock_release "$key"
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gcr_event "vm-created" "$job_id" "{\"vm_id\":$vm_id,\"label\":\"$label\",\"ttl_min\":$ttl_min,\"via\":\"deferred-retry\"}"
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gcr_log info --ns=alloc "deferred job=$job_id allocated vm=$vm_id"
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}
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gcr_retry_deferred() {
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for f in $(gcr_active_records); do
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rec="$(cat "$f")"
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[ "$(gcr_record_field "$rec" status)" = "deferred" ] || continue
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gcr_alloc_deferred \
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"$(gcr_record_field "$rec" job_id)" \
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"$(gcr_record_field "$rec" run_attempt)"
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done
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}
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gcr_sweep_stale_runners() {
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gcr_lock_acquire idle-pool || return 0
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oldIFS="$IFS"
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IFS=,
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for allowed_repo in ${GCR_ALLOWED_REPOS:-}; do
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IFS="$oldIFS"
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case "$allowed_repo" in
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*/\*)
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owner="${allowed_repo%/*}"
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repos="$(gcr_gitea_list_org_repos "$owner")" || {
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IFS=,
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continue
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}
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;;
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*/*) repos="$allowed_repo" ;;
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*) continue ;;
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esac
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while read -r repo; do
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[ -n "${repo:-}" ] || continue
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gcr_repo_allowed "$repo" || continue
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runners="$(gcr_gitea_list_runners "$repo")" || continue
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# Here-doc instead of pipe: dash runs pipe tails in a subshell, which
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# would strand gcr_event/audit writes from the caller's perspective.
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while read -r rid rname; do
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[ -n "${rid:-}" ] || continue
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case "$rname" in
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gcr-*) ;;
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*) continue ;;
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esac
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# Runner name stays tied to original VM across later job assignments.
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rest="${rname#gcr-}"
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jid="${rest%-*}"
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if ! gcr_record_exists_for_vm_name "$rname"; then
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gcr_log warn --ns=sweep "stale repo=$repo registration id=$rid name=$rname -> delete"
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if gcr_gitea_delete_runner "$repo" "$rid"; then
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gcr_event "stale-runner-deleted" "${jid:-unknown}" "{\"repo\":\"$repo\",\"runner_id\":$rid,\"name\":\"$rname\"}"
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else
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gcr_log error --ns=sweep "failed deleting repo=$repo runner id=$rid"
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fi
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fi
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done <<EOF
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$runners
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EOF
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done <<EOF
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$repos
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EOF
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IFS=,
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done
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IFS="$oldIFS"
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gcr_lock_release idle-pool
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}
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# Runs SSH-push bootstrap for VMs that were created but not yet provisioned.
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# Registration token is fetched fresh per attempt (short-lived usefulness).
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gcr_bootstrap_pending() {
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for f in $(gcr_active_records); do
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rec="$(cat "$f")"
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[ "$(gcr_record_field "$rec" status)" = "pending_vm" ] || continue
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[ "$(gcr_record_field "$rec" bootstrapped)" = "true" ] && continue
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job_id="$(gcr_record_field "$rec" job_id)"
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attempt="$(gcr_record_field "$rec" run_attempt)"
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key="$(gcr_alloc_key "$job_id" "$attempt")"
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gcr_lock_acquire "$key" || continue
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rec="$(gcr_record_get "$job_id" "$attempt")"
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if [ "$(gcr_record_field "$rec" status)" != "pending_vm" ] \
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|| [ "$(gcr_record_field "$rec" bootstrapped)" = "true" ]; then
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gcr_lock_release "$key"
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continue
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fi
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repo="$(gcr_record_field "$rec" repo)"
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label="$(gcr_record_field "$rec" label)"
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vm_id="$(gcr_record_field "$rec" vm_id)"
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runner_name="$(gcr_record_field "$rec" vm_name)"
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if [ "$(gcr_record_field "$rec" reused_vm)" = "true" ]; then
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if gcr_vm_runner_service "$vm_id" start \
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&& gcr_gitea_runner_disabled "$repo" "$runner_name" false; then
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rec="$(printf '%s' "$rec" | jq -c '.bootstrapped = true | del(.reused_vm)')"
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gcr_record_put "$job_id" "$attempt" "$rec"
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else
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gcr_gitea_runner_disabled "$repo" "$runner_name" true || true
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fi
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gcr_lock_release "$key"
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continue
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fi
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state="$(gcr_gitea_job_state "$repo" "$job_id")" || {
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gcr_lock_release "$key"
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continue
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}
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case "$state" in
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completed:*)
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gcr_log info --ns=sweep "pending job=$job_id already terminal ($state), destroying vm=$vm_id"
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if [ -n "$vm_id" ] && [ "$vm_id" != "0" ] && [ "$vm_id" != "null" ]; then
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case "$state" in
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completed:success|completed:cancelled|completed:skipped) ;;
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*)
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ip="$(gcr_vm_public_ip "$vm_id" || true)"
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gcr_vm_collect_diagnostics "$vm_id" "$ip" "$job_id" "$state" || true
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;;
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esac
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gcr_vm_destroy "$vm_id" || true
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gcr_event "vm-destroyed" "$job_id" "{\"vm_id\":$vm_id,\"reason\":\"pending-job-completed\",\"state\":\"$state\"}"
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fi
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gcr_record_del "$job_id" "$attempt"
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gcr_lock_release "$key"
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continue
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;;
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esac
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ip="$(gcr_vm_public_ip "$vm_id")" || {
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gcr_lock_release "$key"
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continue
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}
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if [ -z "$ip" ]; then
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gcr_lock_release "$key"
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continue
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fi
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reg_token="$(gcr_gitea_registration_token "$repo")" || {
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gcr_lock_release "$key"
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continue
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}
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ttl_min="$(gcr_record_field "$rec" ttl_min)"
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gcr_log info --ns=alloc "bootstrapping vm=$vm_id ip=$ip job=$job_id"
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if gcr_vm_bootstrap_ssh "$ip" "$label" "$reg_token" "$runner_name"; then
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rec="$(printf '%s' "$rec" | jq -c '.bootstrapped = true | .ip = $ip' --arg ip "$ip")"
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gcr_record_put "$job_id" "$attempt" "$rec"
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gcr_event "vm-bootstrapped" "$job_id" "{\"vm_id\":$vm_id,\"ip\":\"$ip\"}"
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else
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gcr_log warn --ns=alloc "bootstrap failed vm=$vm_id (retry next tick)"
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fi
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gcr_lock_release "$key"
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done
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}
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# Reap terminal jobs even when completed webhook path lags or is absent.
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gcr_reap_finished_jobs() {
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for f in $(gcr_active_records); do
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rec="$(cat "$f")"
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case "$(gcr_record_field "$rec" status)" in
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pending_vm|vm_active) ;;
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*) continue ;;
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esac
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job_id="$(gcr_record_field "$rec" job_id)"
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attempt="$(gcr_record_field "$rec" run_attempt)"
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repo="$(gcr_record_field "$rec" repo)"
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vm_id="$(gcr_record_field "$rec" vm_id)"
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state="$(gcr_gitea_job_state "$repo" "$job_id")" || continue
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case "$state" in
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completed:*)
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key="$(gcr_alloc_key "$job_id" "$attempt")"
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gcr_lock_acquire "$key" || continue
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rec="$(gcr_record_get "$job_id" "$attempt")"
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if [ -z "$rec" ]; then
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gcr_lock_release "$key"
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continue
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fi
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case "$(gcr_record_field "$rec" status)" in
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pending_vm|vm_active) ;;
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*) gcr_lock_release "$key"; continue ;;
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esac
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vm_id="$(gcr_record_field "$rec" vm_id)"
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if [ "$state" = "completed:success" ] \
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&& idle_rec="$(gcr_record_idle_json "$rec")"; then
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if ! gcr_lock_acquire idle-pool; then
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gcr_lock_release "$key"
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continue
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fi
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runner_name="$(gcr_record_field "$rec" vm_name)"
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if ! gcr_gitea_runner_disabled "$repo" "$runner_name" true \
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|| ! gcr_vm_runner_service "$vm_id" stop; then
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gcr_lock_release idle-pool
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gcr_vm_destroy "$vm_id" || true
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gcr_record_del "$job_id" "$attempt"
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gcr_lock_release "$key"
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gcr_event "vm-destroyed" "$job_id" "{\"vm_id\":$vm_id,\"reason\":\"idle-stop-failed\",\"via\":\"reconcile\"}"
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continue
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fi
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gcr_record_put "$job_id" "$attempt" "$idle_rec"
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idle_expires="$(gcr_record_field "$idle_rec" idle_expires_at)"
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gcr_lock_release idle-pool
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gcr_lock_release "$key"
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gcr_event "vm-idle" "$job_id" "{\"vm_id\":$vm_id,\"expires_at\":$idle_expires,\"via\":\"reconcile\"}"
|
|
gcr_log info --ns=sweep "job=$job_id succeeded, retaining vm=$vm_id until $idle_expires"
|
|
continue
|
|
fi
|
|
|
|
gcr_log info --ns=sweep "job=$job_id terminal ($state), destroying vm=$vm_id"
|
|
if [ -n "$vm_id" ] && [ "$vm_id" != "0" ] && [ "$vm_id" != "null" ]; then
|
|
case "$state" in
|
|
completed:success|completed:cancelled|completed:skipped) ;;
|
|
*)
|
|
ip="$(gcr_vm_public_ip "$vm_id" || true)"
|
|
gcr_vm_collect_diagnostics "$vm_id" "$ip" "$job_id" "$state" || true
|
|
;;
|
|
esac
|
|
gcr_vm_destroy "$vm_id" || true
|
|
gcr_event "vm-destroyed" "$job_id" "{\"vm_id\":$vm_id,\"reason\":\"job-completed\",\"state\":\"$state\"}"
|
|
fi
|
|
gcr_record_del "$job_id" "$attempt"
|
|
gcr_lock_release "$key"
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
gcr_tick() {
|
|
gcr_sweep_ttl
|
|
gcr_reap_finished_jobs
|
|
gcr_sweep_orphan_vms
|
|
gcr_retry_deferred
|
|
gcr_bootstrap_pending
|
|
gcr_sweep_stale_runners
|
|
}
|
|
|
|
gcr_main() {
|
|
: "${GCR_RECONCILE_INTERVAL_SEC:=60}"
|
|
gcr_state_init
|
|
|
|
gcr_log info --ns=core "controller starting, interval=${GCR_RECONCILE_INTERVAL_SEC}s state=$GCR_STATE_DIR"
|
|
gcr_tick
|
|
|
|
while :; do
|
|
sleep "$GCR_RECONCILE_INTERVAL_SEC"
|
|
if ! gcr_tick; then
|
|
gcr_log error --ns=core "tick failed, retrying next interval"
|
|
fi
|
|
done
|
|
}
|