run

Usage

prism run is used to execute a Python-based Prism project. This is distinct from a PySpark-based Prism project, in which case you would need to use the spark-submit command.

Usage: prism run [-h] [--modules [X.py Y.py ...]] [--all-upstream] [--all-downstream] [--full-tb] [-l] [--vars [A=a B=b ...]] [--context '{}']

Execute your Prism project

Options:
  -h, --help            show this help message and exit

Command Options:
  --modules [X.py Y.py ...]
                        Path to script(s) that you want to run; if not specified, all modules in project are run
  --all-upstream        Run all modules upstream of --modules
  --all-downstream      Run all modules downstream of --modules

General Options:
  --full-tb             Display the full traceback for errors in the project; default is False
  -l, --log-level       Log level, must be one of `info`, `warn`, `error`, or `debug`. Default is `info`
  --vars [A=a B=b ...]  Prism variables as key-value pairs `key=value`. These overwrite any variable definitions in `prism_project.py`. All values are read as strings.
  --context '{}'        Prism variables as JSON. Cannot co-exist with --vars. These overwrite any variable definitions in `prism_project.py`.

Here's what prism run does under the hood:

1. It first executes the prism compile command.

   • Recall that this command parses the tasks contained in the modules/ folder for tasks.ref(...) calls, creates the dependency graph, and stores the project metadata (e.g., the configuration, the tasks.ref(...) calls, the targets, and the topological sort) in a manifest.

2. It parses the prism_project.py file. It also parses the configuration files listed within prism_project.py (e.g., PROFILE_YML_PATH, TRIGGERS_YML_PATH).

3. It creates a pipeline consisting of the global variables from prism_project.py and the adapters from profile.yml.

4. It executes the tasks in a topological order.

Example

Here's what the output looks like in Terminal:

$ prism run
--------------------------------------------------------------------------------
<HH:MM:SS> | INFO  | Running with prism v0.1.9...
<HH:MM:SS> | INFO  | Found project directory at /Users/my_first_project
 
<HH:MM:SS> | INFO  | RUNNING EVENT 'parsing prism_project.py'................................................ [RUN]
<HH:MM:SS> | INFO  | FINISHED EVENT 'parsing prism_project.py'............................................... [DONE in 0.03s]
<HH:MM:SS> | INFO  | RUNNING EVENT 'module DAG'.............................................................. [RUN]
<HH:MM:SS> | INFO  | FINISHED EVENT 'module DAG'............................................................. [DONE in 0.01s]
<HH:MM:SS> | INFO  | RUNNING EVENT 'creating pipeline, DAG executor'......................................... [RUN]
<HH:MM:SS> | INFO  | FINISHED EVENT 'creating pipeline, DAG executor'........................................ [DONE in 0.01s]
 
<HH:MM:SS> | INFO  | ===================== tasks 'vermilion-hornet-Gyycw4kRWG' =====================
<HH:MM:SS> | INFO  | 1 of 1 RUNNING EVENT 'module01.py'...................................................... [RUN]
<HH:MM:SS> | INFO  | 1 of 1 FINISHED EVENT 'module01.py'..................................................... [DONE in 0.01s]
 
<HH:MM:SS> | INFO  | Done!
--------------------------------------------------------------------------------

Required arguments

There are no required arguments for run.

Optional arguments

Here are the optional arguments you can run with run:

• --full-tb : Display full traceback if errors arise at any stage of the pipeline

• --log-level: Log level, one of info, warn, error, or critical.

• --vars: Prism variables as key-value pairs key=value. These overwrite any variable definitions in prism_project.py. All values are read as strings.

• --context: Prism variables as JSON. Cannot co-exist with --vars. These overwrite any variable definitions in prism_project.py.

• --modules: Paths to modules that you want to run; if not specified, all modules in pipeline are run. Paths should be specified relative to the modules folder.

• --all-upstream: Run all modules upstream of those specified in --modules

• --all-downstream: Run all modules downstream of those specified in --modules