Merge pull request #19302 from ahrtr/metrics_20250129
Add e2e metrics test case to ensure no any metrics missing in future PRs
This commit is contained in:
Benjamin Wang
GitHub
commit
f5973c9c27
@ -15,11 +15,17 @@
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package e2e
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"testing"
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"time"
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dto "github.com/prometheus/client_model/go"
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"github.com/prometheus/common/expfmt"
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"github.com/stretchr/testify/require"
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"go.etcd.io/etcd/api/v3/version"
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@ -126,3 +132,238 @@ func expectLearnerMetric(cx ctlCtx, procIdx int, expectMetric string) {
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args := e2e.CURLPrefixArgsCluster(cx.epc.Cfg, cx.epc.Procs[procIdx], "GET", e2e.CURLReq{Endpoint: "/metrics"})
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require.NoError(cx.t, e2e.SpawnWithExpectsContext(ctx, args, nil, expect.ExpectedResponse{Value: expectMetric}))
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}
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func TestNoMetricsMissing(t *testing.T) {
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var (
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// Note the list doesn't contain all the metrics, because the
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// labelled metrics won't be exposed by prometheus by default.
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// They are only exposed when at least one value with labels
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// is set.
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basicMetrics = []string{
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"etcd_cluster_version",
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"etcd_debugging_auth_revision",
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"etcd_debugging_disk_backend_commit_rebalance_duration_seconds",
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"etcd_debugging_disk_backend_commit_spill_duration_seconds",
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"etcd_debugging_disk_backend_commit_write_duration_seconds",
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"etcd_debugging_lease_granted_total",
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"etcd_debugging_lease_renewed_total",
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"etcd_debugging_lease_revoked_total",
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"etcd_debugging_lease_ttl_total",
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"etcd_debugging_mvcc_compact_revision",
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"etcd_debugging_mvcc_current_revision",
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"etcd_debugging_mvcc_db_compaction_keys_total",
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"etcd_debugging_mvcc_db_compaction_last",
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"etcd_debugging_mvcc_db_compaction_pause_duration_milliseconds",
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"etcd_debugging_mvcc_db_compaction_total_duration_milliseconds",
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"etcd_debugging_mvcc_events_total",
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"etcd_debugging_mvcc_index_compaction_pause_duration_milliseconds",
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"etcd_debugging_mvcc_keys_total",
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"etcd_debugging_mvcc_pending_events_total",
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"etcd_debugging_mvcc_slow_watcher_total",
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"etcd_debugging_mvcc_total_put_size_in_bytes",
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"etcd_debugging_mvcc_watch_stream_total",
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"etcd_debugging_mvcc_watcher_total",
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"etcd_debugging_server_lease_expired_total",
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"etcd_debugging_snap_save_marshalling_duration_seconds",
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"etcd_debugging_snap_save_total_duration_seconds",
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"etcd_debugging_store_expires_total",
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"etcd_debugging_store_reads_total",
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"etcd_debugging_store_watch_requests_total",
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"etcd_debugging_store_watchers",
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"etcd_debugging_store_writes_total",
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"etcd_disk_backend_commit_duration_seconds",
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"etcd_disk_backend_defrag_duration_seconds",
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"etcd_disk_backend_snapshot_duration_seconds",
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"etcd_disk_defrag_inflight",
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"etcd_disk_wal_fsync_duration_seconds",
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"etcd_disk_wal_write_bytes_total",
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"etcd_disk_wal_write_duration_seconds",
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"etcd_grpc_proxy_cache_hits_total",
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"etcd_grpc_proxy_cache_keys_total",
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"etcd_grpc_proxy_cache_misses_total",
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"etcd_grpc_proxy_events_coalescing_total",
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"etcd_grpc_proxy_watchers_coalescing_total",
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"etcd_mvcc_db_open_read_transactions",
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"etcd_mvcc_db_total_size_in_bytes",
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"etcd_mvcc_db_total_size_in_use_in_bytes",
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"etcd_mvcc_delete_total",
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"etcd_mvcc_hash_duration_seconds",
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"etcd_mvcc_hash_rev_duration_seconds",
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"etcd_mvcc_put_total",
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"etcd_mvcc_range_total",
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"etcd_mvcc_txn_total",
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"etcd_network_client_grpc_received_bytes_total",
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"etcd_network_client_grpc_sent_bytes_total",
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"etcd_network_known_peers",
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"etcd_server_apply_duration_seconds",
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"etcd_server_client_requests_total",
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"etcd_server_go_version",
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"etcd_server_has_leader",
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"etcd_server_health_failures",
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"etcd_server_health_success",
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"etcd_server_heartbeat_send_failures_total",
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"etcd_server_id",
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"etcd_server_is_leader",
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"etcd_server_is_learner",
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"etcd_server_leader_changes_seen_total",
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"etcd_server_learner_promote_successes",
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"etcd_server_proposals_applied_total",
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"etcd_server_proposals_committed_total",
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"etcd_server_proposals_failed_total",
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"etcd_server_proposals_pending",
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"etcd_server_quota_backend_bytes",
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"etcd_server_range_duration_seconds",
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"etcd_server_read_indexes_failed_total",
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"etcd_server_slow_apply_total",
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"etcd_server_slow_read_indexes_total",
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"etcd_server_snapshot_apply_in_progress_total",
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"etcd_server_version",
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"etcd_snap_db_fsync_duration_seconds",
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"etcd_snap_db_save_total_duration_seconds",
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"etcd_snap_fsync_duration_seconds",
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"go_gc_duration_seconds",
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"go_gc_gogc_percent",
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"go_gc_gomemlimit_bytes",
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"go_goroutines",
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"go_info",
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"go_memstats_alloc_bytes",
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"go_memstats_alloc_bytes_total",
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"go_memstats_buck_hash_sys_bytes",
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"go_memstats_frees_total",
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"go_memstats_gc_sys_bytes",
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"go_memstats_heap_alloc_bytes",
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"go_memstats_heap_idle_bytes",
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"go_memstats_heap_inuse_bytes",
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"go_memstats_heap_objects",
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"go_memstats_heap_released_bytes",
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"go_memstats_heap_sys_bytes",
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"go_memstats_last_gc_time_seconds",
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"go_memstats_mallocs_total",
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"go_memstats_mcache_inuse_bytes",
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"go_memstats_mcache_sys_bytes",
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"go_memstats_mspan_inuse_bytes",
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"go_memstats_mspan_sys_bytes",
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"go_memstats_next_gc_bytes",
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"go_memstats_other_sys_bytes",
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"go_memstats_stack_inuse_bytes",
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"go_memstats_stack_sys_bytes",
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"go_memstats_sys_bytes",
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"go_sched_gomaxprocs_threads",
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"go_threads",
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"grpc_server_handled_total",
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"grpc_server_msg_received_total",
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"grpc_server_msg_sent_total",
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"grpc_server_started_total",
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"os_fd_limit",
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"os_fd_used",
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"promhttp_metric_handler_requests_in_flight",
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"promhttp_metric_handler_requests_total",
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}
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extraMultipleMemberClusterMetrics = []string{
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"etcd_network_active_peers",
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"etcd_network_peer_received_bytes_total",
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"etcd_network_peer_sent_bytes_total",
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}
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extraExtensiveMetrics = []string{"grpc_server_handling_seconds"}
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)
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testCases := []struct {
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name string
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options []e2e.EPClusterOption
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expectedMetrics []string
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}{
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{
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name: "basic metrics of 1 member cluster",
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options: []e2e.EPClusterOption{
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e2e.WithClusterSize(1),
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},
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expectedMetrics: basicMetrics,
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},
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{
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name: "basic metrics of 3 member cluster",
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options: []e2e.EPClusterOption{
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e2e.WithClusterSize(3),
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},
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expectedMetrics: append(basicMetrics, extraMultipleMemberClusterMetrics...),
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},
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{
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name: "extensive metrics of 1 member cluster",
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options: []e2e.EPClusterOption{
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e2e.WithClusterSize(1),
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e2e.WithExtensiveMetrics(),
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},
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expectedMetrics: append(basicMetrics, extraExtensiveMetrics...),
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},
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{
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name: "extensive metrics of 3 member cluster",
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options: []e2e.EPClusterOption{
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e2e.WithClusterSize(3),
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e2e.WithExtensiveMetrics(),
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},
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expectedMetrics: append(append(basicMetrics, extraExtensiveMetrics...), extraMultipleMemberClusterMetrics...),
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},
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}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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e2e.BeforeTest(t)
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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epc, err := e2e.NewEtcdProcessCluster(ctx, t, tc.options...)
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require.NoError(t, err)
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defer epc.Close()
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c := epc.Procs[0].Etcdctl()
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for i := 0; i < 3; i++ {
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err = c.Put(ctx, fmt.Sprintf("key_%d", i), fmt.Sprintf("value_%d", i), config.PutOptions{})
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require.NoError(t, err)
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}
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_, err = c.Get(ctx, "k", config.GetOptions{})
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require.NoError(t, err)
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metricsURL, err := url.JoinPath(epc.Procs[0].Config().ClientURL, "metrics")
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require.NoError(t, err)
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mfs, err := getMetrics(metricsURL)
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require.NoError(t, err)
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var missingMetrics []string
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for _, metrics := range tc.expectedMetrics {
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if _, ok := mfs[metrics]; !ok {
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missingMetrics = append(missingMetrics, metrics)
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}
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}
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require.Emptyf(t, missingMetrics, "Some metrics are missing: %v", missingMetrics)
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// Please keep the log below to generate the expected metrics.
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// t.Logf("All metrics: %v", formatMetrics(slices.Sorted(maps.Keys(mfs))))
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})
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}
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}
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func getMetrics(metricsURL string) (map[string]*dto.MetricFamily, error) {
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httpClient := http.Client{Transport: &http.Transport{}}
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resp, err := httpClient.Get(metricsURL)
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if err != nil {
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return nil, err
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}
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data, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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var parser expfmt.TextParser
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return parser.TextToMetricFamilies(bytes.NewReader(data))
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}
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// formatMetrics is only for test purpose
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/*func formatMetrics(metrics []string) string {
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quoted := make([]string, len(metrics))
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for i, s := range metrics {
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quoted[i] = fmt.Sprintf(`"%s",`, s)
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}
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return fmt.Sprintf("[]string{\n%s\n}", strings.Join(quoted, "\n"))
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}*/
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@ -416,6 +416,10 @@ func WithCipherSuites(suites []string) EPClusterOption {
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return func(c *EtcdProcessClusterConfig) { c.ServerConfig.CipherSuites = suites }
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}
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func WithExtensiveMetrics() EPClusterOption {
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return func(c *EtcdProcessClusterConfig) { c.ServerConfig.Metrics = "extensive" }
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}
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// NewEtcdProcessCluster launches a new cluster from etcd processes, returning
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// a new EtcdProcessCluster once all nodes are ready to accept client requests.
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func NewEtcdProcessCluster(ctx context.Context, t testing.TB, opts ...EPClusterOption) (*EtcdProcessCluster, error) {
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@ -24,6 +24,7 @@ require (
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github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
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github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.0
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github.com/prometheus/client_golang v1.20.5
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github.com/prometheus/client_model v0.6.1
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github.com/prometheus/common v0.62.0
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github.com/soheilhy/cmux v0.1.5
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github.com/stretchr/testify v1.10.0
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@ -79,7 +80,6 @@ require (
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github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
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github.com/olekukonko/tablewriter v0.0.5 // indirect
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github.com/pmezard/go-difflib v1.0.0 // indirect
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github.com/prometheus/client_model v0.6.1 // indirect
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github.com/prometheus/procfs v0.15.1 // indirect
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github.com/rivo/uniseg v0.4.7 // indirect
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github.com/sirupsen/logrus v1.9.3 // indirect
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