Trigger for Cloud Logging that invokes a Serverless Containers container
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Updated at June 23, 2025
A trigger for Cloud Logging invokes a Serverless Containers container when messages are received in a log group.
A trigger for Cloud Logging needs a service account to read messages from the log group and invoke a container.
For more information about creating a trigger for Cloud Logging, see Creating a trigger for Cloud Logging that invokes a Serverless Containers container.
Message batching
The batching settings allow sending several messages to a container at the same time. They set a top limit on a message batch size and its accumulation time. For example, if the size of a message group is 3, the container can receive groups with 1 to 3 messages.
Roles required for the proper operation of a trigger for Cloud Logging
- To create a trigger, you need a permission for the service account under which the trigger runs the operation. This permission comes with the iam.serviceAccounts.user and editor roles or higher.
- For the trigger to fire, the service account needs the following roles:
serverless-containers.containerInvokerfor the container the trigger invokes.logging.readerfor the log group that will fire the trigger when entries are added to it.
Format of the message from the trigger for Cloud Logging
After the trigger is activated, it sends the following message to the container:
{
"messages":[
{
"event_metadata":{
"event_id":"2c59a567-6666-4b65-a0b0-cc12********",
"event_type":"yandex.cloud.events.serverless.triggers.LoggingMessageBatch",
"created_at":{
"seconds":1630607359,
"nanos":6794776
}
},
"details":{
"messages":[
{
"resource":{
"type":"serverless.function",
"id":"b09tm9raoev5********"
},
"timestamp":"2021-09-02 18:29:17.118082213 +0000 UTC",
"level":"INFO",
"message":"START RequestID: 085035c7-2319-40dd-bb03-fd8t******** Version: b09s5cq4b935********",
"json_payload":{
"request_id":"085035c7-2319-40dd-bb03-fdb2********",
"version_id":"b09s5cq4b935********"
}
}
]
}
}
]
}