Crate dagrs

Modules

• gen_macro
• log
  logger for dagrs.

Macros

• gen_task
  Macros for generating simple tasks.

Structs

• CommandAction
  Can be used to run a command.
• Dag
  A Dag represents a set of tasks. Use it to build a multitasking Dag.
• DefaultTask
  A default implementation of the Task trait. In general, use it to define the tasks of dagrs.
• Engine
  The Engine. Manage multiple Dags.
• EnvVar
  environment variable.
• Input
  Task’s input value.
• Output
  Output produced by a task.
• RunningError
  Errors that may be generated when the specific behavior of the task is run. This is just a simple error handling. When running the tasks in the configuration file, some errors can be found by the user, which is convenient for debugging. It also allows users to return expected errors in custom task behavior. However, even if this error is expected, it will cause the execution of the entire task to fail.
• YamlParser
  An implementation of Parser. It is the default yaml configuration file parser.
• YamlTask
  Task struct for yaml file.

Enums

• DagError
  A synthesis of all possible errors.
• FileContentError
  Error about file information.
• LogLevel
  Log level.
• ParserError
  Errors that may occur while parsing task configuration files.
• YamlTaskError
  Errors about task configuration items.

Traits

• Action
  Action Trait. Action represents the specific behavior to be executed.
• Logger
  Log interface.
• Parser
  Generic parser traits. If users want to customize the configuration file parser, they must implement this trait. YamlParser is an example of Parser
• Task
  Tasks can have many attributes, among which id, name, predecessor_tasks, and runnable attributes are required, and users can also customize some other attributes. DefaultTask in this module is a Task, the DAG engine uses it as the basic task by default.

Functions

• alloc_id
  public function to assign task’s id.