From a3feacbd2f0bc39894b26739a4b8bb5bd99c03b4 Mon Sep 17 00:00:00 2001 From: Ross McDonald Date: Thu, 27 Apr 2017 13:47:22 -0500 Subject: [PATCH] Kapacitor input plugin (#2031) --- CHANGELOG.md | 1 + plugins/inputs/all/all.go | 1 + plugins/inputs/internal/README.md | 2 +- plugins/inputs/kapacitor/README.md | 149 ++++++++++++++ plugins/inputs/kapacitor/kapacitor.go | 228 +++++++++++++++++++++ plugins/inputs/kapacitor/kapacitor_test.go | 141 +++++++++++++ testutil/accumulator.go | 16 ++ 7 files changed, 537 insertions(+), 1 deletion(-) create mode 100644 plugins/inputs/kapacitor/README.md create mode 100644 plugins/inputs/kapacitor/kapacitor.go create mode 100644 plugins/inputs/kapacitor/kapacitor_test.go diff --git a/CHANGELOG.md b/CHANGELOG.md index 2c9930f9867ad..1b2651e3a13d4 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -77,6 +77,7 @@ be deprecated eventually. - [#2575](https://github.com/influxdata/telegraf/issues/2575) Add diskio input for Darwin - [#2705](https://github.com/influxdata/telegraf/pull/2705): Kinesis output: add use_random_partitionkey option - [#2635](https://github.com/influxdata/telegraf/issues/2635): add tcp keep-alive to socket_listener & socket_writer +- [#2031](https://github.com/influxdata/telegraf/pull/2031): Add Kapacitor input plugin ### Bugfixes diff --git a/plugins/inputs/all/all.go b/plugins/inputs/all/all.go index f7207da842e35..10af14864f74d 100644 --- a/plugins/inputs/all/all.go +++ b/plugins/inputs/all/all.go @@ -35,6 +35,7 @@ import ( _ "github.com/influxdata/telegraf/plugins/inputs/iptables" _ "github.com/influxdata/telegraf/plugins/inputs/jolokia" _ "github.com/influxdata/telegraf/plugins/inputs/kafka_consumer" + _ "github.com/influxdata/telegraf/plugins/inputs/kapacitor" _ "github.com/influxdata/telegraf/plugins/inputs/kubernetes" _ "github.com/influxdata/telegraf/plugins/inputs/leofs" _ "github.com/influxdata/telegraf/plugins/inputs/logparser" diff --git a/plugins/inputs/internal/README.md b/plugins/inputs/internal/README.md index 4e6d3795b191e..fbec4d86fd0c2 100644 --- a/plugins/inputs/internal/README.md +++ b/plugins/inputs/internal/README.md @@ -80,4 +80,4 @@ internal_write,output=file,host=tyrion buffer_limit=10000i,write_time_ns=636609i internal_gather,input=internal,host=tyrion metrics_gathered=19i,gather_time_ns=442114i 1480682800000000000 internal_gather,input=http_listener,host=tyrion metrics_gathered=0i,gather_time_ns=167285i 1480682800000000000 internal_http_listener,address=:8186,host=tyrion queries_received=0i,writes_received=0i,requests_received=0i,buffers_created=0i,requests_served=0i,pings_received=0i,bytes_received=0i,not_founds_served=0i,pings_served=0i,queries_served=0i,writes_served=0i 1480682800000000000 -``` \ No newline at end of file +``` diff --git a/plugins/inputs/kapacitor/README.md b/plugins/inputs/kapacitor/README.md new file mode 100644 index 0000000000000..b1ae356b147c0 --- /dev/null +++ b/plugins/inputs/kapacitor/README.md @@ -0,0 +1,149 @@ +# Kapacitor Plugin + +The Kapacitor plugin will collect metrics from the given Kapacitor instances. + +### Configuration: + +```toml +[[inputs.kapacitor]] + ## Multiple URLs from which to read Kapacitor-formatted JSON + ## Default is "http://localhost:9092/kapacitor/v1/debug/vars". + urls = [ + "http://localhost:9092/kapacitor/v1/debug/vars" + ] + + ## Time limit for http requests + timeout = "5s" +``` + +### Measurements & Fields + +- kapacitor + - num_enabled_tasks, integer + - num_subscriptions, integer + - num_tasks, integer +- kapacitor_edges + - collected, integer + - emitted, integer +- kapacitor_ingress + - points_received, integer +- kapacitor_memstats + - alloc_bytes, integer + - buck_hash_sys_bytes, integer + - frees, integer + - gcc_pu_fraction, float + - gc_sys_bytes, integer + - heap_alloc_bytes, integer + - heap_idle_bytes, integer + - heap_inuse_bytes, integer + - heap_objects, integer + - heap_released_bytes, integer + - heap_sys_bytes, integer + - last_gc_ns, integer + - lookups, integer + - mallocs, integer + - mcache_in_use_bytes, integer + - mcache_sys_bytes, integer + - mspan_in_use_bytes, integer + - mspan_sys_bytes, integer + - next_gc_ns, integer + - num_gc, integer + - other_sys_bytes, integer + - pause_total_ns, integer + - stack_in_use_bytes, integer + - stack_sys_bytes, integer + - sys_bytes, integer + - total_alloc_bytes, integer +- kapacitor_nodes + - alerts_triggered, integer + - avg_exec_time_ns, integer + - batches_queried, integer + - crits_triggered, integer + - eval_errors, integer + - fields_defaulted, integer + - infos_triggered, integer + - oks_triggered, integer + - points_queried, integer + - points_written, integer + - query_errors, integer + - tags_defaulted, integer + - warns_triggered, integer + - write_errors, integer + +*Note:* The Kapacitor variables `host`, `cluster_id`, and `server_id` +are currently not recorded due to the potential high cardinality of +these values. + +### Example Output: + +``` +$ telegraf -config /etc/telegraf.conf -input-filter kapacitor -test +* Plugin: inputs.kapacitor, Collection 1 +> kapacitor_memstats,host=hostname.local,kap_version=1.1.0~rc2,url=http://localhost:9092/kapacitor/v1/debug/vars alloc_bytes=6974808i,buck_hash_sys_bytes=1452609i,frees=207281i,gc_sys_bytes=802816i,gcc_pu_fraction=0.00004693548939673313,heap_alloc_bytes=6974808i,heap_idle_bytes=6742016i,heap_in_use_bytes=9183232i,heap_objects=23216i,heap_released_bytes=0i,heap_sys_bytes=15925248i,last_gc_ns=1478791460012676997i,lookups=88i,mallocs=230497i,mcache_in_use_bytes=9600i,mcache_sys_bytes=16384i,mspan_in_use_bytes=98560i,mspan_sys_bytes=131072i,next_gc_ns=11467528i,num_gc=8i,other_sys_bytes=2236087i,pause_total_ns=2994110i,stack_in_use_bytes=1900544i,stack_sys_bytes=1900544i,sys_bytes=22464760i,total_alloc_bytes=35023600i 1478791462000000000 +> kapacitor,host=hostname.local,kap_version=1.1.0~rc2,url=http://localhost:9092/kapacitor/v1/debug/vars num_enabled_tasks=5i,num_subscriptions=5i,num_tasks=5i 1478791462000000000 +> kapacitor_edges,child=stream0,host=hostname.local,parent=stream,task=deadman-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=shard,retention_policy=monitor,task_master=main points_received=120 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=subscriber,retention_policy=monitor,task_master=main points_received=60 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=http_out,node=http_out3,task=sys-stats,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_edges,child=window6,host=hostname.local,parent=derivative5,task=deadman-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=from,node=from1,task=sys-stats,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=stream,node=stream0,task=test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=window,node=window6,task=deadman-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=cq,retention_policy=monitor,task_master=main points_received=10 1478791462000000000 +> kapacitor_edges,child=http_out3,host=hostname.local,parent=window2,task=sys-stats,type=batch collected=0,emitted=0 1478791462000000000 +> kapacitor_edges,child=mean4,host=hostname.local,parent=log3,task=deadman-test,type=batch collected=0,emitted=0 1478791462000000000 +> kapacitor_ingress,database=_kapacitor,host=hostname.local,measurement=nodes,retention_policy=autogen,task_master=main points_received=207 1478791462000000000 +> kapacitor_edges,child=stream0,host=hostname.local,parent=stream,task=sys-stats,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_edges,child=log6,host=hostname.local,parent=sum5,task=derivative-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_edges,child=from1,host=hostname.local,parent=stream0,task=sys-stats,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=alert,node=alert2,task=test,type=stream alerts_triggered=0,avg_exec_time_ns=0i,crits_triggered=0,infos_triggered=0,oks_triggered=0,warns_triggered=0 1478791462000000000 +> kapacitor_edges,child=log3,host=hostname.local,parent=derivative2,task=derivative-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_ingress,database=_kapacitor,host=hostname.local,measurement=runtime,retention_policy=autogen,task_master=main points_received=9 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=tsm1_filestore,retention_policy=monitor,task_master=main points_received=120 1478791462000000000 +> kapacitor_edges,child=derivative2,host=hostname.local,parent=from1,task=derivative-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=stream,node=stream0,task=derivative-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=queryExecutor,retention_policy=monitor,task_master=main points_received=10 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=tsm1_wal,retention_policy=monitor,task_master=main points_received=120 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=log,node=log6,task=derivative-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_edges,child=stream,host=hostname.local,parent=stats,task=task_master:main,type=stream collected=598,emitted=598 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=write,retention_policy=monitor,task_master=main points_received=10 1478791462000000000 +> kapacitor_edges,child=stream0,host=hostname.local,parent=stream,task=derivative-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=log,node=log3,task=deadman-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=from,node=from1,task=deadman-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_ingress,database=_kapacitor,host=hostname.local,measurement=ingress,retention_policy=autogen,task_master=main points_received=148 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=eval,node=eval4,task=derivative-test,type=stream avg_exec_time_ns=0i,eval_errors=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=derivative,node=derivative2,task=derivative-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=runtime,retention_policy=monitor,task_master=main points_received=10 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=httpd,retention_policy=monitor,task_master=main points_received=10 1478791462000000000 +> kapacitor_edges,child=sum5,host=hostname.local,parent=eval4,task=derivative-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_ingress,database=_kapacitor,host=hostname.local,measurement=kapacitor,retention_policy=autogen,task_master=main points_received=9 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=from,node=from1,task=test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=tsm1_engine,retention_policy=monitor,task_master=main points_received=120 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=window,node=window2,task=deadman-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=stream,node=stream0,task=deadman-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_edges,child=influxdb_out4,host=hostname.local,parent=http_out3,task=sys-stats,type=batch collected=0,emitted=0 1478791462000000000 +> kapacitor_edges,child=window2,host=hostname.local,parent=from1,task=deadman-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=from,node=from1,task=derivative-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_edges,child=from1,host=hostname.local,parent=stream0,task=deadman-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=database,retention_policy=monitor,task_master=main points_received=40 1478791462000000000 +> kapacitor_edges,child=stream,host=hostname.local,parent=write_points,task=task_master:main,type=stream collected=750,emitted=750 1478791462000000000 +> kapacitor_edges,child=log7,host=hostname.local,parent=window6,task=deadman-test,type=batch collected=0,emitted=0 1478791462000000000 +> kapacitor_edges,child=window2,host=hostname.local,parent=from1,task=sys-stats,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=log,node=log7,task=deadman-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_ingress,database=_kapacitor,host=hostname.local,measurement=edges,retention_policy=autogen,task_master=main points_received=225 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=derivative,node=derivative5,task=deadman-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_edges,child=from1,host=hostname.local,parent=stream0,task=test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_edges,child=alert2,host=hostname.local,parent=from1,task=test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=log,node=log3,task=derivative-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=influxdb_out,node=influxdb_out4,task=sys-stats,type=stream avg_exec_time_ns=0i,points_written=0,write_errors=0 1478791462000000000 +> kapacitor_edges,child=stream0,host=hostname.local,parent=stream,task=test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_edges,child=log3,host=hostname.local,parent=window2,task=deadman-test,type=batch collected=0,emitted=0 1478791462000000000 +> kapacitor_edges,child=derivative5,host=hostname.local,parent=mean4,task=deadman-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=stream,node=stream0,task=sys-stats,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=window,node=window2,task=sys-stats,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=mean,node=mean4,task=deadman-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_edges,child=from1,host=hostname.local,parent=stream0,task=derivative-test,type=stream collected=0,emitted=0 1478791462000000000 +> kapacitor_ingress,database=_internal,host=hostname.local,measurement=tsm1_cache,retention_policy=monitor,task_master=main points_received=120 1478791462000000000 +> kapacitor_nodes,host=hostname.local,kind=sum,node=sum5,task=derivative-test,type=stream avg_exec_time_ns=0i 1478791462000000000 +> kapacitor_edges,child=eval4,host=hostname.local,parent=log3,task=derivative-test,type=stream collected=0,emitted=0 1478791462000000000 +``` diff --git a/plugins/inputs/kapacitor/kapacitor.go b/plugins/inputs/kapacitor/kapacitor.go new file mode 100644 index 0000000000000..4c75bd0ce5e14 --- /dev/null +++ b/plugins/inputs/kapacitor/kapacitor.go @@ -0,0 +1,228 @@ +package kapacitor + +import ( + "encoding/json" + "fmt" + "net/http" + "sync" + "time" + + "github.com/influxdata/telegraf" + "github.com/influxdata/telegraf/internal" + "github.com/influxdata/telegraf/plugins/inputs" +) + +const ( + defaultURL = "http://localhost:9092/kapacitor/v1/debug/vars" +) + +type Kapacitor struct { + URLs []string `toml:"urls"` + + Timeout internal.Duration + + client *http.Client +} + +func (*Kapacitor) Description() string { + return "Read Kapacitor-formatted JSON metrics from one or more HTTP endpoints" +} + +func (*Kapacitor) SampleConfig() string { + return ` + ## Multiple URLs from which to read Kapacitor-formatted JSON + ## Default is "http://localhost:9092/kapacitor/v1/debug/vars". + urls = [ + "http://localhost:9092/kapacitor/v1/debug/vars" + ] + + ## Time limit for http requests + timeout = "5s" +` +} + +func (k *Kapacitor) Gather(acc telegraf.Accumulator) error { + if k.client == nil { + k.client = &http.Client{Timeout: k.Timeout.Duration} + } + + var wg sync.WaitGroup + for _, u := range k.URLs { + wg.Add(1) + go func(url string) { + defer wg.Done() + if err := k.gatherURL(acc, url); err != nil { + acc.AddError(fmt.Errorf("[url=%s]: %s", url, err)) + } + }(u) + } + + wg.Wait() + return nil +} + +type object struct { + Name string `json:"name"` + Values map[string]interface{} `json:"values"` + Tags map[string]string `json:"tags"` +} + +type memstats struct { + Alloc int64 `json:"Alloc"` + TotalAlloc int64 `json:"TotalAlloc"` + Sys int64 `json:"Sys"` + Lookups int64 `json:"Lookups"` + Mallocs int64 `json:"Mallocs"` + Frees int64 `json:"Frees"` + HeapAlloc int64 `json:"HeapAlloc"` + HeapSys int64 `json:"HeapSys"` + HeapIdle int64 `json:"HeapIdle"` + HeapInuse int64 `json:"HeapInuse"` + HeapReleased int64 `json:"HeapReleased"` + HeapObjects int64 `json:"HeapObjects"` + StackInuse int64 `json:"StackInuse"` + StackSys int64 `json:"StackSys"` + MSpanInuse int64 `json:"MSpanInuse"` + MSpanSys int64 `json:"MSpanSys"` + MCacheInuse int64 `json:"MCacheInuse"` + MCacheSys int64 `json:"MCacheSys"` + BuckHashSys int64 `json:"BuckHashSys"` + GCSys int64 `json:"GCSys"` + OtherSys int64 `json:"OtherSys"` + NextGC int64 `json:"NextGC"` + LastGC int64 `json:"LastGC"` + PauseTotalNs int64 `json:"PauseTotalNs"` + NumGC int64 `json:"NumGC"` + GCCPUFraction float64 `json:"GCCPUFraction"` +} + +type stats struct { + CmdLine []string `json:"cmdline"` + ClusterID string `json:"cluster_id"` + Host string `json:"host"` + Kapacitor *map[string]object `json:"kapacitor"` + MemStats *memstats `json:"memstats"` + NumEnabledTasks int `json:"num_enabled_tasks"` + NumSubscriptions int `json:"num_subscriptions"` + NumTasks int `json:"num_tasks"` + Product string `json:"product"` + ServerID string `json:"server_id"` + Version string `json:"version"` +} + +// Gathers data from a particular URL +// Parameters: +// acc : The telegraf Accumulator to use +// url : endpoint to send request to +// +// Returns: +// error: Any error that may have occurred +func (k *Kapacitor) gatherURL( + acc telegraf.Accumulator, + url string, +) error { + now := time.Now() + + resp, err := k.client.Get(url) + if err != nil { + return err + } + defer resp.Body.Close() + + dec := json.NewDecoder(resp.Body) + + var s stats + err = dec.Decode(&s) + if err != nil { + return err + } + + if s.MemStats != nil { + acc.AddFields("kapacitor_memstats", + map[string]interface{}{ + "alloc_bytes": s.MemStats.Alloc, + "buck_hash_sys_bytes": s.MemStats.BuckHashSys, + "frees": s.MemStats.Frees, + "gcc_pu_fraction": s.MemStats.GCCPUFraction, + "gc_sys_bytes": s.MemStats.GCSys, + "heap_alloc_bytes": s.MemStats.HeapAlloc, + "heap_idle_bytes": s.MemStats.HeapIdle, + "heap_in_use_bytes": s.MemStats.HeapInuse, + "heap_objects": s.MemStats.HeapObjects, + "heap_released_bytes": s.MemStats.HeapReleased, + "heap_sys_bytes": s.MemStats.HeapSys, + "last_gc_ns": s.MemStats.LastGC, + "lookups": s.MemStats.Lookups, + "mallocs": s.MemStats.Mallocs, + "mcache_in_use_bytes": s.MemStats.MCacheInuse, + "mcache_sys_bytes": s.MemStats.MCacheSys, + "mspan_in_use_bytes": s.MemStats.MSpanInuse, + "mspan_sys_bytes": s.MemStats.MSpanSys, + "next_gc_ns": s.MemStats.NextGC, + "num_gc": s.MemStats.NumGC, + "other_sys_bytes": s.MemStats.OtherSys, + "pause_total_ns": s.MemStats.PauseTotalNs, + "stack_in_use_bytes": s.MemStats.StackInuse, + "stack_sys_bytes": s.MemStats.StackSys, + "sys_bytes": s.MemStats.Sys, + "total_alloc_bytes": s.MemStats.TotalAlloc, + }, + map[string]string{ + "kap_version": s.Version, + "url": url, + }, + now) + } + + acc.AddFields("kapacitor", + map[string]interface{}{ + "num_enabled_tasks": s.NumEnabledTasks, + "num_subscriptions": s.NumSubscriptions, + "num_tasks": s.NumTasks, + }, + map[string]string{ + "kap_version": s.Version, + "url": url, + }, + now) + + if s.Kapacitor != nil { + for _, obj := range *s.Kapacitor { + + // Strip out high-cardinality or duplicative tags + excludeTags := []string{"host", "cluster_id", "server_id"} + for _, key := range excludeTags { + if _, ok := obj.Tags[key]; ok { + delete(obj.Tags, key) + } + } + + // Convert time-related string field to int + if _, ok := obj.Values["avg_exec_time_ns"]; ok { + d, err := time.ParseDuration(obj.Values["avg_exec_time_ns"].(string)) + if err != nil { + continue + } + obj.Values["avg_exec_time_ns"] = d.Nanoseconds() + } + + acc.AddFields( + "kapacitor_"+obj.Name, + obj.Values, + obj.Tags, + now, + ) + } + } + + return nil +} + +func init() { + inputs.Add("kapacitor", func() telegraf.Input { + return &Kapacitor{ + URLs: []string{defaultURL}, + Timeout: internal.Duration{Duration: time.Second * 5}, + } + }) +} diff --git a/plugins/inputs/kapacitor/kapacitor_test.go b/plugins/inputs/kapacitor/kapacitor_test.go new file mode 100644 index 0000000000000..b32aeec24b383 --- /dev/null +++ b/plugins/inputs/kapacitor/kapacitor_test.go @@ -0,0 +1,141 @@ +package kapacitor_test + +import ( + "net/http" + "net/http/httptest" + "testing" + + "github.com/influxdata/telegraf/plugins/inputs/kapacitor" + "github.com/influxdata/telegraf/testutil" + "github.com/stretchr/testify/require" +) + +func TestKapacitor(t *testing.T) { + fakeInfluxServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + if r.URL.Path == "/endpoint" { + _, _ = w.Write([]byte(kapacitorReturn)) + } else { + w.WriteHeader(http.StatusNotFound) + } + })) + defer fakeInfluxServer.Close() + + plugin := &kapacitor.Kapacitor{ + URLs: []string{fakeInfluxServer.URL + "/endpoint"}, + } + + var acc testutil.Accumulator + require.NoError(t, plugin.Gather(&acc)) + + require.Len(t, acc.Metrics, 63) + + fields := map[string]interface{}{ + "alloc_bytes": int64(6950624), + "buck_hash_sys_bytes": int64(1446737), + "frees": int64(129656), + "gcc_pu_fraction": float64(0.006757149597237818), + "gc_sys_bytes": int64(575488), + "heap_alloc_bytes": int64(6950624), + "heap_idle_bytes": int64(499712), + "heap_in_use_bytes": int64(9166848), + "heap_objects": int64(28070), + "heap_released_bytes": int64(0), + "heap_sys_bytes": int64(9666560), + "last_gc_ns": int64(1478813691405406556), + "lookups": int64(40), + "mallocs": int64(157726), + "mcache_in_use_bytes": int64(9600), + "mcache_sys_bytes": int64(16384), + "mspan_in_use_bytes": int64(105600), + "mspan_sys_bytes": int64(114688), + "next_gc_ns": int64(10996691), + "num_gc": int64(4), + "other_sys_bytes": int64(1985959), + "pause_total_ns": int64(767327), + "stack_in_use_bytes": int64(819200), + "stack_sys_bytes": int64(819200), + "sys_bytes": int64(14625016), + "total_alloc_bytes": int64(13475176), + } + + tags := map[string]string{ + "kap_version": "1.1.0~rc2", + "url": fakeInfluxServer.URL + "/endpoint", + } + acc.AssertContainsTaggedFields(t, "kapacitor_memstats", fields, tags) + + acc.AssertContainsTaggedFields(t, "kapacitor", + map[string]interface{}{ + "num_enabled_tasks": 5, + "num_subscriptions": 6, + "num_tasks": 5, + }, tags) +} + +func TestMissingStats(t *testing.T) { + server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + w.Write([]byte(`{}`)) + })) + defer server.Close() + + plugin := &kapacitor.Kapacitor{ + URLs: []string{server.URL}, + } + + var acc testutil.Accumulator + plugin.Gather(&acc) + + require.False(t, acc.HasField("kapacitor_memstats", "alloc_bytes")) + require.True(t, acc.HasField("kapacitor", "num_tasks")) +} + +func TestErrorHandling(t *testing.T) { + badServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + if r.URL.Path == "/endpoint" { + _, _ = w.Write([]byte("not json")) + } else { + w.WriteHeader(http.StatusNotFound) + } + })) + defer badServer.Close() + + plugin := &kapacitor.Kapacitor{ + URLs: []string{badServer.URL + "/endpoint"}, + } + + var acc testutil.Accumulator + plugin.Gather(&acc) + acc.WaitError(1) + require.Equal(t, uint64(0), acc.NMetrics()) +} + +func TestErrorHandling404(t *testing.T) { + badServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + w.WriteHeader(http.StatusNotFound) + })) + defer badServer.Close() + + plugin := &kapacitor.Kapacitor{ + URLs: []string{badServer.URL}, + } + + var acc testutil.Accumulator + plugin.Gather(&acc) + acc.WaitError(1) + require.Equal(t, uint64(0), acc.NMetrics()) +} + +const kapacitorReturn = `{ +"cluster_id": "aaa1cb78-8277-4886-a8ea-4706bca20842", +"cmdline": ["./build/kapacitord","-config","/Users/ross/.kapacitor/config"], +"host": "localhost", +"kapacitor": {"4360b884-4f1b-4915-90b9-e40a27cd366a": {"name": "ingress", "tags": {"task_master": "main", "database": "_internal", "retention_policy": "monitor", "measurement": "cq", "cluster_id": "aaa1cb78-8277-4886-a8ea-4706bca20842", "server_id": "81e38258-5f18-4201-8d47-db603bfceeff", "host": "localhost"}, "values": {"points_received": 1}}, "b5ca6839-5cda-4330-b7aa-fccc50ce1320": {"name": "edges", "tags": {"type": "stream", "task": "task_master:main", "parent": "write_points", "child": "stream", "cluster_id": "aaa1cb78-8277-4886-a8ea-4706bca20842", "server_id": "81e38258-5f18-4201-8d47-db603bfceeff", "host": "localhost"}, "values": {"collected": 72, "emitted": 72}}, "e4f4dd29-96fe-41ca-9107-43030f67d47c": {"name": "edges", "tags": {"host": "localhost", "task": "deadman-test", "parent": "log3", "child": "mean4", "type": "batch", "cluster_id": "aaa1cb78-8277-4886-a8ea-4706bca20842", "server_id": "81e38258-5f18-4201-8d47-db603bfceeff"}, "values": {"collected": 0, "emitted": 0}}, "f8bb9712-52ea-44c8-a0d9-8b6ee47b9cb8": {"name": "edges", "tags": {"task": "derivative-test", "parent": "sum5", "child": "log6", "type": "stream", "cluster_id": "aaa1cb78-8277-4886-a8ea-4706bca20842", "server_id": "81e38258-5f18-4201-8d47-db603bfceeff", "host": "localhost"}, "values": {"collected": 0, "emitted": 0}}, "340391e7-8fc7-447d-ad07-547c5dd51f2c": {"tags": {"child": "from1", "type": "stream", "cluster_id": 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+"num_enabled_tasks": 5, +"num_subscriptions": 6, +"num_tasks": 5, +"product": "kapacitor", +"server_id": "81e38258-5f18-4201-8d47-db603bfceeff", +"version": "1.1.0~rc2" +} +` diff --git a/testutil/accumulator.go b/testutil/accumulator.go index 75472f944d500..2ff5bc66759aa 100644 --- a/testutil/accumulator.go +++ b/testutil/accumulator.go @@ -299,6 +299,22 @@ func (a *Accumulator) HasTimestamp(measurement string, timestamp time.Time) bool return false } +// HasField returns true if the given measurement has a field with the given +// name +func (a *Accumulator) HasField(measurement string, field string) bool { + a.Lock() + defer a.Unlock() + for _, p := range a.Metrics { + if p.Measurement == measurement { + if _, ok := p.Fields[field]; ok { + return true + } + } + } + + return false +} + // HasIntField returns true if the measurement has an Int value func (a *Accumulator) HasIntField(measurement string, field string) bool { a.Lock()