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exporter

A variety of exporters are available to the OpenCensus Service (both Agent and Collector)

Collector

Intelligent Sampling

The Collector features intelligent (tail-based) sampling. In addition to different configuration options it features a variety of different policies.

sampling: mode: tail# amount of time from seeing the first span in a trace until making the sampling decisiondecision-wait: 10s# maximum number of traces kept in the memorynum-traces: 10000policies: # user-defined policy namemy-rate-limiting: # exporters the policy applies toexporters: - jaeger - omnitionpolicy: rate-limitingconfiguration: spans-per-second: 1000my-string-attribute-filter: exporters: - jaeger - omnitionpolicy: string-attribute-filterconfiguration: key: key1values: - value1 - value2my-numeric-attribute-filter: exporters: - jaeger - omnitionpolicy: numeric-attribute-filterconfiguration: key: key1min-value: 0max-value: 100my-always-sample: exporters: - jaeger - omnitionpolicy: always-sample

Queued Exporters

In addition to the normal exporters, the OpenCensus Collector supports a special configuration. queued-exporters offer bounded buffer retry logic for multiple destinations.

queued-exporters: omnition: # A friendly name for the processorbatching: enable: false# sets the time, in seconds, after which a batch will be sent regardless of sizetimeout: 1# number of spans which after hit, will trigger it to be sentsend-batch-size: 8192# num-workers is the number of queue workers that will be dequeuing batches and sending them out (default is 10)num-workers: 2# queue-size is the maximum number of batches allowed in the queue at a given time (default is 5000)queue-size: 100# retry-on-failure indicates whether queue processor should retry span batches in case of processing failure (default is true)retry-on-failure: true# backoff-delay is the amount of time a worker waits after a failed send before retrying (default is 5 seconds)backoff-delay: 3s# sender-type is the type of sender used by this processor, the default is an invalid sender so it forces one to be specifiedsender-type: jaeger-thrift-http# configuration of the selected sender-type, in this example jaeger-thrift-http. Which supports 3 settings:# collector-endpoint: address of Jaeger collector thrift-http endpoint# headers: a map of any additional headers to be sent with each batch (e.g.: api keys, etc)# timeout: the timeout for the sender to consider the operation as failedjaeger-thrift-http: collector-endpoint: "https://ingest.omnition.io"headers: { "x-omnition-api-key": "00000000-0000-0000-0000-000000000001" }timeout: 5s# Non-sender exporters can now also be used by setting the exporters section in queued-exporters.exporters: opencensus: endpoint: "127.0.0.1:55566"cert-pem-file: "server_ca_public.pem"# PEM file used to enable TLS. For trusted CAs from# system pool use "secure:" setting, see below.compression: "gzip"reconnection-dealy: 2s# Delay (+70% jitter) before reconnection attempt in case of error.secure: true # Used to export to destinations trusted by certificates from the system pool.# "cert-pem-file:" takes precedence over this setting.keepalive: # Keepalive settings for gRPC clients, see https://godoc.org/google.golang.org/grpc/keepalive#ClientParameters.# Recommended to be set for cases that need to support bursts of data and periods of inactivity.time: 30s# After inactive for this amount to time client will send a ping to the server.timeout: 5s# Amount of time that client waits for a keepalive ping response before closing the connection.permit-without-stream: true # Permits the keepalive ping even if no RPCs are in use, if false no ping is sent.my-org-jaeger: # A second processor with its own configuration optionsnum-workers: 2queue-size: 100retry-on-failure: truebackoff-delay: 3ssender-type: jaeger-thrift-httpjaeger-thrift-http: collector-endpoint: "http://jaeger.local:14268/api/traces"timeout: 5s
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