diff --git a/internal/http.go b/internal/http.go index 04b8a9368..1c3dd4957 100644 --- a/internal/http.go +++ b/internal/http.go @@ -48,6 +48,41 @@ func (h *basicAuthHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) h.next.ServeHTTP(rw, req) } +type GenericAuthErrorFunc func(rw http.ResponseWriter) + +// GenericAuthHandler returns a http handler that requires `Authorization: ` +func GenericAuthHandler(credentials string, onError GenericAuthErrorFunc) func(h http.Handler) http.Handler { + return func(h http.Handler) http.Handler { + return &genericAuthHandler{ + credentials: credentials, + onError: onError, + next: h, + } + } +} + +// Generic auth scheme handler - exact match on `Authorization: ` +type genericAuthHandler struct { + credentials string + onError GenericAuthErrorFunc + next http.Handler +} + +func (h *genericAuthHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) { + if h.credentials != "" { + // Scheme checking + authorization := req.Header.Get("Authorization") + if subtle.ConstantTimeCompare([]byte(authorization), []byte(h.credentials)) != 1 { + + h.onError(rw) + http.Error(rw, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized) + return + } + } + + h.next.ServeHTTP(rw, req) +} + // ErrorFunc is a callback for writing an error response. type ErrorFunc func(rw http.ResponseWriter, code int) diff --git a/plugins/inputs/all/all.go b/plugins/inputs/all/all.go index a6ecf826f..986c501ed 100644 --- a/plugins/inputs/all/all.go +++ b/plugins/inputs/all/all.go @@ -62,6 +62,7 @@ import ( _ "github.com/influxdata/telegraf/plugins/inputs/infiniband" _ "github.com/influxdata/telegraf/plugins/inputs/influxdb" _ "github.com/influxdata/telegraf/plugins/inputs/influxdb_listener" + _ "github.com/influxdata/telegraf/plugins/inputs/influxdb_v2_listener" _ "github.com/influxdata/telegraf/plugins/inputs/internal" _ "github.com/influxdata/telegraf/plugins/inputs/interrupts" _ "github.com/influxdata/telegraf/plugins/inputs/ipmi_sensor" diff --git a/plugins/inputs/influxdb_v2_listener/README.md b/plugins/inputs/influxdb_v2_listener/README.md new file mode 100644 index 000000000..23f031c3f --- /dev/null +++ b/plugins/inputs/influxdb_v2_listener/README.md @@ -0,0 +1,52 @@ +# InfluxDB V2 Listener Input Plugin + +InfluxDB V2 Listener is a service input plugin that listens for requests sent +according to the [InfluxDB HTTP API][influxdb_http_api]. The intent of the +plugin is to allow Telegraf to serve as a proxy/router for the `/api/v2/write` +endpoint of the InfluxDB HTTP API. + +The `/api/v2/write` endpoint supports the `precision` query parameter and can be set +to one of `ns`, `us`, `ms`, `s`. All other parameters are ignored and +defer to the output plugins configuration. + +### Configuration: + +```toml + ## Address and port to host InfluxDB listener on + service_address = ":9999" + + ## Maximum allowed HTTP request body size in bytes. + ## 0 means to use the default of 32MiB. + # max_body_size = "32MiB" + + ## Optional tag to determine the bucket. + ## If the write has a bucket in the query string then it will be kept in this tag name. + ## This tag can be used in downstream outputs. + ## The default value of nothing means it will be off and the database will not be recorded. + # bucket_tag = "" + + ## Set one or more allowed client CA certificate file names to + ## enable mutually authenticated TLS connections + # tls_allowed_cacerts = ["/etc/telegraf/clientca.pem"] + + ## Add service certificate and key + # tls_cert = "/etc/telegraf/cert.pem" + # tls_key = "/etc/telegraf/key.pem" + + ## Optional token to accept for HTTP authentication. + ## You probably want to make sure you have TLS configured above for this. + # token = "some-long-shared-secret-token" +``` + +### Metrics: + +Metrics are created from InfluxDB Line Protocol in the request body. + +### Troubleshooting: + +**Example Query:** +``` +curl -i -XPOST 'http://localhost:8186/api/v2/write' --data-binary 'cpu_load_short,host=server01,region=us-west value=0.64 1434055562000000000' +``` + +[influxdb_http_api]: https://v2.docs.influxdata.com/v2.0/api/ diff --git a/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener.go b/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener.go new file mode 100644 index 000000000..bd6eb5405 --- /dev/null +++ b/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener.go @@ -0,0 +1,325 @@ +package influxdb_v2_listener + +import ( + "compress/gzip" + "context" + "crypto/tls" + "encoding/json" + "fmt" + "io/ioutil" + "net" + "net/http" + "time" + + "github.com/influxdata/telegraf" + "github.com/influxdata/telegraf/internal" + tlsint "github.com/influxdata/telegraf/plugins/common/tls" + "github.com/influxdata/telegraf/plugins/inputs" + "github.com/influxdata/telegraf/plugins/parsers/influx" + "github.com/influxdata/telegraf/selfstat" +) + +const ( + // defaultMaxBodySize is the default maximum request body size, in bytes. + // if the request body is over this size, we will return an HTTP 413 error. + defaultMaxBodySize = 32 * 1024 * 1024 +) + +// The BadRequestCode constants keep standard error messages +// see: https://v2.docs.influxdata.com/v2.0/api/#operation/PostWrite +type BadRequestCode string + +const ( + InternalError BadRequestCode = "internal error" + Invalid BadRequestCode = "invalid" +) + +type InfluxDBV2Listener struct { + ServiceAddress string `toml:"service_address"` + port int + tlsint.ServerConfig + + MaxBodySize internal.Size `toml:"max_body_size"` + Token string `toml:"token"` + BucketTag string `toml:"bucket_tag"` + + timeFunc influx.TimeFunc + + listener net.Listener + server http.Server + + acc telegraf.Accumulator + + bytesRecv selfstat.Stat + requestsServed selfstat.Stat + writesServed selfstat.Stat + requestsRecv selfstat.Stat + notFoundsServed selfstat.Stat + authFailures selfstat.Stat + + startTime time.Time + + Log telegraf.Logger `toml:"-"` + + mux http.ServeMux +} + +const sampleConfig = ` + ## Address and port to host InfluxDB listener on + service_address = ":9999" + + ## Maximum allowed HTTP request body size in bytes. + ## 0 means to use the default of 32MiB. + # max_body_size = "32MiB" + + ## Optional tag to determine the bucket. + ## If the write has a bucket in the query string then it will be kept in this tag name. + ## This tag can be used in downstream outputs. + ## The default value of nothing means it will be off and the database will not be recorded. + # bucket_tag = "" + + ## Set one or more allowed client CA certificate file names to + ## enable mutually authenticated TLS connections + # tls_allowed_cacerts = ["/etc/telegraf/clientca.pem"] + + ## Add service certificate and key + # tls_cert = "/etc/telegraf/cert.pem" + # tls_key = "/etc/telegraf/key.pem" + + ## Optional token to accept for HTTP authentication. + ## You probably want to make sure you have TLS configured above for this. + # token = "some-long-shared-secret-token" +` + +func (h *InfluxDBV2Listener) SampleConfig() string { + return sampleConfig +} + +func (h *InfluxDBV2Listener) Description() string { + return "Accept metrics over InfluxDB 2.x HTTP API" +} + +func (h *InfluxDBV2Listener) Gather(_ telegraf.Accumulator) error { + return nil +} + +func (h *InfluxDBV2Listener) routes() { + credentials := "" + if h.Token != "" { + credentials = fmt.Sprintf("Token %s", h.Token) + } + authHandler := internal.GenericAuthHandler(credentials, + func(_ http.ResponseWriter) { + h.authFailures.Incr(1) + }, + ) + + h.mux.Handle("/api/v2/write", authHandler(h.handleWrite())) + h.mux.Handle("/", authHandler(h.handleDefault())) +} + +func (h *InfluxDBV2Listener) Init() error { + tags := map[string]string{ + "address": h.ServiceAddress, + } + h.bytesRecv = selfstat.Register("influxdb_v2_listener", "bytes_received", tags) + h.requestsServed = selfstat.Register("influxdb_v2_listener", "requests_served", tags) + h.writesServed = selfstat.Register("influxdb_v2_listener", "writes_served", tags) + h.requestsRecv = selfstat.Register("influxdb_v2_listener", "requests_received", tags) + h.notFoundsServed = selfstat.Register("influxdb_v2_listener", "not_founds_served", tags) + h.authFailures = selfstat.Register("influxdb_v2_listener", "auth_failures", tags) + h.routes() + + if h.MaxBodySize.Size == 0 { + h.MaxBodySize.Size = defaultMaxBodySize + } + + return nil +} + +// Start starts the InfluxDB listener service. +func (h *InfluxDBV2Listener) Start(acc telegraf.Accumulator) error { + h.acc = acc + + tlsConf, err := h.ServerConfig.TLSConfig() + if err != nil { + return err + } + + h.server = http.Server{ + Addr: h.ServiceAddress, + Handler: h, + TLSConfig: tlsConf, + } + + var listener net.Listener + if tlsConf != nil { + listener, err = tls.Listen("tcp", h.ServiceAddress, tlsConf) + if err != nil { + return err + } + } else { + listener, err = net.Listen("tcp", h.ServiceAddress) + if err != nil { + return err + } + } + h.listener = listener + h.port = listener.Addr().(*net.TCPAddr).Port + + go func() { + err = h.server.Serve(h.listener) + if err != http.ErrServerClosed { + h.Log.Infof("Error serving HTTP on %s", h.ServiceAddress) + } + }() + + h.startTime = h.timeFunc() + + h.Log.Infof("Started HTTP listener service on %s", h.ServiceAddress) + + return nil +} + +// Stop cleans up all resources +func (h *InfluxDBV2Listener) Stop() { + err := h.server.Shutdown(context.Background()) + if err != nil { + h.Log.Infof("Error shutting down HTTP server: %v", err.Error()) + } +} + +func (h *InfluxDBV2Listener) ServeHTTP(res http.ResponseWriter, req *http.Request) { + h.requestsRecv.Incr(1) + h.mux.ServeHTTP(res, req) + h.requestsServed.Incr(1) +} + +func (h *InfluxDBV2Listener) handleDefault() http.HandlerFunc { + return func(res http.ResponseWriter, req *http.Request) { + defer h.notFoundsServed.Incr(1) + http.NotFound(res, req) + } +} + +func (h *InfluxDBV2Listener) handleWrite() http.HandlerFunc { + return func(res http.ResponseWriter, req *http.Request) { + defer h.writesServed.Incr(1) + // Check that the content length is not too large for us to handle. + if req.ContentLength > h.MaxBodySize.Size { + tooLarge(res, h.MaxBodySize.Size) + return + } + + bucket := req.URL.Query().Get("bucket") + + body := req.Body + body = http.MaxBytesReader(res, body, h.MaxBodySize.Size) + // Handle gzip request bodies + if req.Header.Get("Content-Encoding") == "gzip" { + var err error + body, err = gzip.NewReader(body) + if err != nil { + h.Log.Debugf("Error decompressing request body: %v", err.Error()) + badRequest(res, Invalid, err.Error()) + return + } + defer body.Close() + } + + var readErr error + var bytes []byte + //body = http.MaxBytesReader(res, req.Body, 1000000) //p.MaxBodySize.Size) + bytes, readErr = ioutil.ReadAll(body) + if readErr != nil { + h.Log.Debugf("Error parsing the request body: %v", readErr.Error()) + badRequest(res, InternalError, readErr.Error()) + return + } + metricHandler := influx.NewMetricHandler() + parser := influx.NewParser(metricHandler) + parser.SetTimeFunc(h.timeFunc) + + precisionStr := req.URL.Query().Get("precision") + if precisionStr != "" { + precision := getPrecisionMultiplier(precisionStr) + metricHandler.SetTimePrecision(precision) + } + + var metrics []telegraf.Metric + var err error + + metrics, err = parser.Parse(bytes) + + if err != influx.EOF && err != nil { + h.Log.Debugf("Error parsing the request body: %v", err.Error()) + badRequest(res, Invalid, err.Error()) + return + } + + for _, m := range metrics { + // Handle bucket_tag override + if h.BucketTag != "" && bucket != "" { + m.AddTag(h.BucketTag, bucket) + } + + h.acc.AddMetric(m) + } + + // http request success + res.WriteHeader(http.StatusNoContent) + } +} + +func tooLarge(res http.ResponseWriter, maxLength int64) { + res.Header().Set("Content-Type", "application/json") + res.Header().Set("X-Influxdb-Error", "http: request body too large") + res.WriteHeader(http.StatusRequestEntityTooLarge) + b, _ := json.Marshal(map[string]string{ + "code": fmt.Sprint(Invalid), + "message": "http: request body too large", + "maxLength": fmt.Sprint(maxLength)}) + res.Write(b) +} + +func badRequest(res http.ResponseWriter, code BadRequestCode, errString string) { + res.Header().Set("Content-Type", "application/json") + if errString == "" { + errString = "http: bad request" + } + res.Header().Set("X-Influxdb-Error", errString) + res.WriteHeader(http.StatusBadRequest) + b, _ := json.Marshal(map[string]string{ + "code": fmt.Sprint(code), + "message": errString, + "op": "", + "err": errString, + }) + res.Write(b) +} + +func getPrecisionMultiplier(precision string) time.Duration { + // Influxdb defaults silently to nanoseconds if precision isn't + // one of the following: + var d time.Duration + switch precision { + case "us": + d = time.Microsecond + case "ms": + d = time.Millisecond + case "s": + d = time.Second + default: + d = time.Nanosecond + } + return d +} + +func init() { + inputs.Add("influxdb_v2_listener", func() telegraf.Input { + return &InfluxDBV2Listener{ + ServiceAddress: ":9999", + timeFunc: time.Now, + } + }) +} diff --git a/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener_benchmark_test.go b/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener_benchmark_test.go new file mode 100644 index 000000000..e1e2c7090 --- /dev/null +++ b/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener_benchmark_test.go @@ -0,0 +1,108 @@ +package influxdb_v2_listener + +import ( + "fmt" + "net/http" + "net/http/httptest" + "strings" + "testing" + "time" + + "github.com/influxdata/telegraf/internal" + "github.com/influxdata/telegraf/selfstat" + "github.com/influxdata/telegraf/testutil" +) + +// newListener is the minimal InfluxDBV2Listener construction to serve writes. +func newListener() *InfluxDBV2Listener { + listener := &InfluxDBV2Listener{ + timeFunc: time.Now, + acc: &testutil.NopAccumulator{}, + bytesRecv: selfstat.Register("influxdb_v2_listener", "bytes_received", map[string]string{}), + writesServed: selfstat.Register("influxdb_v2_listener", "writes_served", map[string]string{}), + MaxBodySize: internal.Size{ + Size: defaultMaxBodySize, + }, + } + return listener +} + +func BenchmarkInfluxDBV2Listener_serveWrite(b *testing.B) { + res := httptest.NewRecorder() + addr := "http://localhost/api/v2/write?bucket=mybucket" + + benchmarks := []struct { + name string + lines string + }{ + { + name: "single line, tag, and field", + lines: lines(1, 1, 1), + }, + { + name: "single line, 10 tags and fields", + lines: lines(1, 10, 10), + }, + { + name: "single line, 100 tags and fields", + lines: lines(1, 100, 100), + }, + { + name: "1k lines, single tag and field", + lines: lines(1000, 1, 1), + }, + { + name: "1k lines, 10 tags and fields", + lines: lines(1000, 10, 10), + }, + { + name: "10k lines, 10 tags and fields", + lines: lines(10000, 10, 10), + }, + { + name: "100k lines, 10 tags and fields", + lines: lines(100000, 10, 10), + }, + } + + for _, bm := range benchmarks { + b.Run(bm.name, func(b *testing.B) { + listener := newListener() + + b.ResetTimer() + for n := 0; n < b.N; n++ { + req, err := http.NewRequest("POST", addr, strings.NewReader(bm.lines)) + if err != nil { + b.Error(err) + } + listener.handleWrite()(res, req) + if res.Code != http.StatusNoContent { + b.Errorf("unexpected status %d", res.Code) + } + } + }) + } +} + +func lines(lines, numTags, numFields int) string { + lp := make([]string, lines) + for i := 0; i < lines; i++ { + tags := make([]string, numTags) + for j := 0; j < numTags; j++ { + tags[j] = fmt.Sprintf("t%d=v%d", j, j) + } + + fields := make([]string, numFields) + for k := 0; k < numFields; k++ { + fields[k] = fmt.Sprintf("f%d=%d", k, k) + } + + lp[i] = fmt.Sprintf("m%d,%s %s", + i, + strings.Join(tags, ","), + strings.Join(fields, ","), + ) + } + + return strings.Join(lp, "\n") +} diff --git a/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener_test.go b/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener_test.go new file mode 100644 index 000000000..0cdb9650c --- /dev/null +++ b/plugins/inputs/influxdb_v2_listener/influxdb_v2_listener_test.go @@ -0,0 +1,518 @@ +package influxdb_v2_listener + +import ( + "bytes" + "crypto/tls" + "crypto/x509" + "fmt" + "io/ioutil" + "net/http" + "net/url" + "runtime" + "strconv" + "sync" + "testing" + "time" + + "github.com/influxdata/telegraf/internal" + "github.com/influxdata/telegraf/testutil" + "github.com/stretchr/testify/require" +) + +const ( + testMsg = "cpu_load_short,host=server01 value=12.0 1422568543702900257\n" + + testMsgNoNewline = "cpu_load_short,host=server01 value=12.0 1422568543702900257" + + testMsgs = `cpu_load_short,host=server02 value=12.0 1422568543702900257 +cpu_load_short,host=server03 value=12.0 1422568543702900257 +cpu_load_short,host=server04 value=12.0 1422568543702900257 +cpu_load_short,host=server05 value=12.0 1422568543702900257 +cpu_load_short,host=server06 value=12.0 1422568543702900257 +` + testPartial = `cpu,host=a value1=1 +cpu,host=b value1=1,value2=+Inf,value3=3 +cpu,host=c value1=1` + + badMsg = "blahblahblah: 42\n" + + emptyMsg = "" + + token = "test-token-please-ignore" +) + +var ( + pki = testutil.NewPKI("../../../testutil/pki") +) + +func newTestListener() *InfluxDBV2Listener { + listener := &InfluxDBV2Listener{ + Log: testutil.Logger{}, + ServiceAddress: "localhost:0", + timeFunc: time.Now, + } + return listener +} + +func newTestAuthListener() *InfluxDBV2Listener { + listener := newTestListener() + listener.Token = token + return listener +} + +func newTestSecureListener() *InfluxDBV2Listener { + listener := &InfluxDBV2Listener{ + Log: testutil.Logger{}, + ServiceAddress: "localhost:0", + ServerConfig: *pki.TLSServerConfig(), + timeFunc: time.Now, + } + + return listener +} + +func getSecureClient() *http.Client { + tlsConfig, err := pki.TLSClientConfig().TLSConfig() + if err != nil { + panic(err) + } + return &http.Client{ + Transport: &http.Transport{ + TLSClientConfig: tlsConfig, + }, + } +} + +func createURL(listener *InfluxDBV2Listener, scheme string, path string, rawquery string) string { + u := url.URL{ + Scheme: scheme, + Host: "localhost:" + strconv.Itoa(listener.port), + Path: path, + RawQuery: rawquery, + } + return u.String() +} + +func TestWriteSecureNoClientAuth(t *testing.T) { + listener := newTestSecureListener() + listener.TLSAllowedCACerts = nil + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + cas := x509.NewCertPool() + cas.AppendCertsFromPEM([]byte(pki.ReadServerCert())) + noClientAuthClient := &http.Client{ + Transport: &http.Transport{ + TLSClientConfig: &tls.Config{ + RootCAs: cas, + }, + }, + } + + // post single message to listener + resp, err := noClientAuthClient.Post(createURL(listener, "https", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(testMsg))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) +} + +func TestWriteSecureWithClientAuth(t *testing.T) { + listener := newTestSecureListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // post single message to listener + resp, err := getSecureClient().Post(createURL(listener, "https", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(testMsg))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) +} + +func TestWriteTokenAuth(t *testing.T) { + listener := newTestAuthListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + client := &http.Client{} + + req, err := http.NewRequest("POST", createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), bytes.NewBuffer([]byte(testMsg))) + require.NoError(t, err) + req.Header.Set("Authorization", fmt.Sprintf("Token %s", token)) + resp, err := client.Do(req) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, http.StatusNoContent, resp.StatusCode) +} + +func TestWriteKeepBucket(t *testing.T) { + testMsgWithDB := "cpu_load_short,host=server01,bucketTag=wrongbucket value=12.0 1422568543702900257\n" + + listener := newTestListener() + listener.BucketTag = "bucketTag" + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // post single message to listener + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(testMsg))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) + + acc.Wait(1) + acc.AssertContainsTaggedFields(t, "cpu_load_short", + map[string]interface{}{"value": float64(12)}, + map[string]string{"host": "server01", "bucketTag": "mybucket"}, + ) + + // post single message to listener with a database tag in it already. It should be clobbered. + resp, err = http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(testMsgWithDB))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) + + acc.Wait(1) + acc.AssertContainsTaggedFields(t, "cpu_load_short", + map[string]interface{}{"value": float64(12)}, + map[string]string{"host": "server01", "bucketTag": "mybucket"}, + ) + + // post multiple message to listener + resp, err = http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(testMsgs))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) + + acc.Wait(2) + hostTags := []string{"server02", "server03", + "server04", "server05", "server06"} + for _, hostTag := range hostTags { + acc.AssertContainsTaggedFields(t, "cpu_load_short", + map[string]interface{}{"value": float64(12)}, + map[string]string{"host": hostTag, "bucketTag": "mybucket"}, + ) + } +} + +// http listener should add a newline at the end of the buffer if it's not there +func TestWriteNoNewline(t *testing.T) { + listener := newTestListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // post single message to listener + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(testMsgNoNewline))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) + + acc.Wait(1) + acc.AssertContainsTaggedFields(t, "cpu_load_short", + map[string]interface{}{"value": float64(12)}, + map[string]string{"host": "server01"}, + ) +} + +func TestAllOrNothing(t *testing.T) { + listener := newTestListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // post single message to listener + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(testPartial))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 400, resp.StatusCode) +} + +func TestWriteMaxLineSizeIncrease(t *testing.T) { + listener := &InfluxDBV2Listener{ + Log: testutil.Logger{}, + ServiceAddress: "localhost:0", + timeFunc: time.Now, + } + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // Post a gigantic metric to the listener and verify that it writes OK this time: + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(hugeMetric))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) +} + +func TestWriteVerySmallMaxBody(t *testing.T) { + listener := &InfluxDBV2Listener{ + Log: testutil.Logger{}, + ServiceAddress: "localhost:0", + MaxBodySize: internal.Size{Size: 4096}, + timeFunc: time.Now, + } + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(hugeMetric))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 413, resp.StatusCode) +} + +func TestWriteLargeLine(t *testing.T) { + listener := &InfluxDBV2Listener{ + Log: testutil.Logger{}, + ServiceAddress: "localhost:0", + timeFunc: func() time.Time { + return time.Unix(123456789, 0) + }, + } + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(hugeMetric+testMsgs))) + require.NoError(t, err) + resp.Body.Close() + //todo: with the new parser, long lines aren't a problem. Do we need to skip them? + //require.EqualValues(t, 400, resp.StatusCode) + + expected := testutil.MustMetric( + "super_long_metric", + map[string]string{"foo": "bar"}, + map[string]interface{}{ + "clients": 42, + "connected_followers": 43, + "evicted_keys": 44, + "expired_keys": 45, + "instantaneous_ops_per_sec": 46, + "keyspace_hitrate": 47.0, + "keyspace_hits": 48, + "keyspace_misses": 49, + "latest_fork_usec": 50, + "master_repl_offset": 51, + "mem_fragmentation_ratio": 52.58, + "pubsub_channels": 53, + "pubsub_patterns": 54, + "rdb_changes_since_last_save": 55, + "repl_backlog_active": 56, + "repl_backlog_histlen": 57, + "repl_backlog_size": 58, + "sync_full": 59, + "sync_partial_err": 60, + "sync_partial_ok": 61, + "total_commands_processed": 62, + "total_connections_received": 63, + "uptime": 64, + "used_cpu_sys": 65.07, + "used_cpu_sys_children": 66.0, + "used_cpu_user": 67.1, + "used_cpu_user_children": 68.0, + "used_memory": 692048, + "used_memory_lua": 70792, + "used_memory_peak": 711128, + "used_memory_rss": 7298144, + }, + time.Unix(123456789, 0), + ) + + m, ok := acc.Get("super_long_metric") + require.True(t, ok) + testutil.RequireMetricEqual(t, expected, testutil.FromTestMetric(m)) + + hostTags := []string{"server02", "server03", + "server04", "server05", "server06"} + acc.Wait(len(hostTags)) + for _, hostTag := range hostTags { + acc.AssertContainsTaggedFields(t, "cpu_load_short", + map[string]interface{}{"value": float64(12)}, + map[string]string{"host": hostTag}, + ) + } +} + +// test that writing gzipped data works +func TestWriteGzippedData(t *testing.T) { + listener := newTestListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + data, err := ioutil.ReadFile("./testdata/testmsgs.gz") + require.NoError(t, err) + + req, err := http.NewRequest("POST", createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), bytes.NewBuffer(data)) + require.NoError(t, err) + req.Header.Set("Content-Encoding", "gzip") + + client := &http.Client{} + resp, err := client.Do(req) + require.NoError(t, err) + require.EqualValues(t, 204, resp.StatusCode) + + hostTags := []string{"server02", "server03", + "server04", "server05", "server06"} + acc.Wait(len(hostTags)) + for _, hostTag := range hostTags { + acc.AssertContainsTaggedFields(t, "cpu_load_short", + map[string]interface{}{"value": float64(12)}, + map[string]string{"host": hostTag}, + ) + } +} + +// writes 25,000 metrics to the listener with 10 different writers +func TestWriteHighTraffic(t *testing.T) { + if runtime.GOOS == "darwin" { + t.Skip("Skipping due to hang on darwin") + } + listener := newTestListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // post many messages to listener + var wg sync.WaitGroup + for i := 0; i < 10; i++ { + wg.Add(1) + go func(innerwg *sync.WaitGroup) { + defer innerwg.Done() + for i := 0; i < 500; i++ { + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(testMsgs))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) + } + }(&wg) + } + + wg.Wait() + listener.Gather(acc) + + acc.Wait(25000) + require.Equal(t, int64(25000), int64(acc.NMetrics())) +} + +func TestReceive404ForInvalidEndpoint(t *testing.T) { + listener := newTestListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // post single message to listener + resp, err := http.Post(createURL(listener, "http", "/foobar", ""), "", bytes.NewBuffer([]byte(testMsg))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 404, resp.StatusCode) +} + +func TestWriteInvalid(t *testing.T) { + listener := newTestListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // post single message to listener + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(badMsg))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 400, resp.StatusCode) +} + +func TestWriteEmpty(t *testing.T) { + listener := newTestListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + // post single message to listener + resp, err := http.Post(createURL(listener, "http", "/api/v2/write", "bucket=mybucket"), "", bytes.NewBuffer([]byte(emptyMsg))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) +} + +func TestWriteWithPrecision(t *testing.T) { + listener := newTestListener() + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + msg := "xyzzy value=42 1422568543\n" + resp, err := http.Post( + createURL(listener, "http", "/api/v2/write", "bucket=mybucket&precision=s"), "", bytes.NewBuffer([]byte(msg))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) + + acc.Wait(1) + require.Equal(t, 1, len(acc.Metrics)) + // When timestamp is provided, the precision parameter is + // overloaded to specify the timestamp's unit + require.Equal(t, time.Unix(0, 1422568543000000000), acc.Metrics[0].Time) +} + +func TestWriteWithPrecisionNoTimestamp(t *testing.T) { + listener := newTestListener() + listener.timeFunc = func() time.Time { + return time.Unix(42, 123456789) + } + + acc := &testutil.Accumulator{} + require.NoError(t, listener.Init()) + require.NoError(t, listener.Start(acc)) + defer listener.Stop() + + msg := "xyzzy value=42\n" + resp, err := http.Post( + createURL(listener, "http", "/api/v2/write", "bucket=mybucket&precision=s"), "", bytes.NewBuffer([]byte(msg))) + require.NoError(t, err) + resp.Body.Close() + require.EqualValues(t, 204, resp.StatusCode) + + acc.Wait(1) + require.Equal(t, 1, len(acc.Metrics)) + // When timestamp is omitted, the precision parameter actually + // specifies the precision. The timestamp is set to the greatest + // integer unit less than the provided timestamp (floor). + require.Equal(t, time.Unix(42, 0), acc.Metrics[0].Time) +} + +// The term 'master_repl' used here is archaic language from redis +const hugeMetric = `super_long_metric,foo=bar 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+` diff --git a/plugins/inputs/influxdb_v2_listener/testdata/testmsgs.gz b/plugins/inputs/influxdb_v2_listener/testdata/testmsgs.gz new file mode 100644 index 000000000..f524dc071 Binary files /dev/null and b/plugins/inputs/influxdb_v2_listener/testdata/testmsgs.gz differ