The GCP PubSub plugin ingests metrics from Google Cloud PubSub and creates metrics using one of the supported input data formats.
[[inputs.pubsub]]
## Required. Name of Google Cloud Platform (GCP) Project that owns
## the given PubSub subscription.
project = "my-project"
## Required. Name of PubSub subscription to ingest metrics from.
subscription = "my-subscription"
## Required. Data format to consume.
## Each data format has its own unique set of configuration options.
## Read more about them here:
## https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
data_format = "influx"
## Optional. Filepath for GCP credentials JSON file to authorize calls to
## PubSub APIs. If not set explicitly, Telegraf will attempt to use
## Application Default Credentials, which is preferred.
# credentials_file = "path/to/my/creds.json"
## Optional. Maximum byte length of a message to consume.
## Larger messages are dropped with an error. If less than 0 or unspecified,
## treated as no limit.
# max_message_len = 1000000
## Optional. Maximum messages to read from PubSub that have not been written
## to an output. Defaults to %d.
## For best throughput set based on the number of metrics within
## each message and the size of the output's metric_batch_size.
##
## For example, if each message contains 10 metrics and the output
## metric_batch_size is 1000, setting this to 100 will ensure that a
## full batch is collected and the write is triggered immediately without
## waiting until the next flush_interval.
# max_undelivered_messages = 1000
## The following are optional Subscription ReceiveSettings in PubSub.
## Read more about these values:
## https://godoc.org/cloud.google.com/go/pubsub#ReceiveSettings
## Optional. Maximum number of seconds for which a PubSub subscription
## should auto-extend the PubSub ACK deadline for each message. If less than
## 0, auto-extension is disabled.
# max_extension = 0
## Optional. Maximum number of unprocessed messages in PubSub
## (unacknowledged but not yet expired in PubSub).
## A value of 0 is treated as the default PubSub value.
## Negative values will be treated as unlimited.
# max_outstanding_messages = 0
## Optional. Maximum size in bytes of unprocessed messages in PubSub
## (unacknowledged but not yet expired in PubSub).
## A value of 0 is treated as the default PubSub value.
## Negative values will be treated as unlimited.
# max_outstanding_bytes = 0
## Optional. Max number of goroutines a PubSub Subscription receiver can spawn
## to pull messages from PubSub concurrently. This limit applies to each
## subscription separately and is treated as the PubSub default if less than
## 1. Note this setting does not limit the number of messages that can be
## processed concurrently (use "max_outstanding_messages" instead).
# max_receiver_go_routines = 0This plugin assumes you have already created a PULL subscription for a given PubSub topic. To learn how to do so, see how to create a subscription.
Each plugin agent can listen to one subscription at a time, so you will need to run multiple instances of the plugin to pull messages from multiple subscriptions/topics.