Exceptions

exception cloudify.exceptions.NonRecoverableError

Bases: exceptions.Exception

An error raised by plugins to denote that no retry should be attempted by by the executing workflow engine.

exception cloudify.exceptions.RecoverableError(message=None, retry_after=None)

Bases: exceptions.Exception

An error raised by plugins to explicitly denote that this is a recoverable error (note that this is the default behavior). It is possible specifying how many seconds should pass before a retry is attempted thus overriding the bootstrap context configuration parameter: cloudify.workflows.retry_interval

Parameters:retry_after – How many seconds should the workflow engine wait before re-executing the task the raised this exception. (only applies when the workflow engine decides that this task should be retried)

exception cloudify.exceptions.OperationRetry(message=None, retry_after=None)

Bases: cloudify.exceptions.RecoverableError

An error raised internally when an operation uses the ctx.operation.retry API for specifying that an operation should be retried.

exception cloudify.exceptions.HttpException(url, code, message)

Bases: cloudify.exceptions.NonRecoverableError

Wraps HTTP based exceptions that may be raised.

Parameters:

• url – The url the request was made to.
• code – The response status code.
• message – The underlying reason for the error.

exception cloudify.exceptions.CommandExecutionException(command, error, output, code)

Bases: exceptions.Exception

Indicates a failure to execute a command.

Parameters:

• command – The command executed
• error – process stderr output
• output – process stdout output
• code – process exit code

exception cloudify.exceptions.TimeoutException(*args)

Bases: exceptions.Exception

Indicates some kind of timeout happened.

exception cloudify.exceptions.ProcessExecutionError(message, error_type=None, traceback=None)

Bases: exceptions.RuntimeError

Raised by the workflow engine when workflow execution fails.