Method: googleapis.spanner.v1.projects.instances.databases.sessions.create

Creates a new session. A session can be used to perform transactions that read and/or modify data in a Cloud Spanner database. Sessions are meant to be reused for many consecutive transactions. Sessions can only execute one transaction at a time. To execute multiple concurrent read-write/write-only transactions, create multiple sessions. Note that standalone reads and queries use a transaction internally, and count toward the one transaction limit. Active sessions use additional server resources, so it is a good idea to delete idle and unneeded sessions. Aside from explicit deletes, Cloud Spanner may delete sessions for which no operations are sent for more than an hour. If a session is deleted, requests to it return NOT_FOUND. Idle sessions can be kept alive by sending a trivial SQL query periodically, e.g., "SELECT 1".

Arguments

Parameters
database	string Required. The database in which the new session is created.
body	object (CreateSessionRequest) Required.

Raised exceptions

Exceptions
ConnectionError	In case of a network problem (such as DNS failure or refused connection).
HttpError	If the response status is >= 400 (excluding 429 and 503).
TimeoutError	If a long-running operation takes longer to finish than the specified timeout limit.
TypeError	If an operation or function receives an argument of the wrong type.
ValueError	If an operation or function receives an argument of the right type but an inappropriate value. For example, a negative timeout.

Response

If successful, the response contains an instance of Session.

Subworkflow snippet

Some fields might be optional or required. To identify required fields, refer to the API documentation.

YAML

- create:
    call: googleapis.spanner.v1.projects.instances.databases.sessions.create
    args:
        database: ...
        body:
            session:
                creatorRole: ...
                labels: ...
    result: createResult

JSON

[
  {
    "create": {
      "call": "googleapis.spanner.v1.projects.instances.databases.sessions.create",
      "args": {
        "database": "...",
        "body": {
          "session": {
            "creatorRole": "...",
            "labels": "..."
          }
        }
      },
      "result": "createResult"
    }
  }
]