Open Job Description is a flexible open specification for defining render jobs which are portable between studios and render management solutions. This package provides a Python implementation of the data model for Open Job Description's template schemas. It can parse, validate, create JSON/Yaml documents for the Open Job Description specification, and more. A main use-case that this library targets is interoperability by creating applications to translate a Job from Open Job Description to the render management software of your choice.
For more information about Open Job Description and our goals with it, please see the Open Job Description Wiki on GitHub.
This library requires:
- Python 3.9 or higher; and
- Linux, MacOS, or Windows operating system.
This package's version follows Semantic Versioning 2.0, but is still considered to be in its initial development, thus backwards incompatible versions are denoted by minor version bumps. To help illustrate how versions will increment during this initial development stage, they are described below:
- The MAJOR version is currently 0, indicating initial development.
- The MINOR version is currently incremented when backwards incompatible changes are introduced to the public API.
- The PATCH version is currently incremented when bug fixes or backwards compatible changes are introduced to the public API.
We encourage all contributions to this package. Whether it's a bug report, new feature, correction, or additional documentation, we greatly value feedback and contributions from our community.
Please see CONTRIBUTING.md for our contributing guidelines.
from openjd.model import (
DecodeValidationError,
DocumentType,
JobTemplate,
document_string_to_object,
decode_job_template
)
# String containing the json of the job template
template_string = "..."
try:
template_object = document_string_to_object(
document=template_string,
document_type=DocumentType.JSON
)
# Use 'decode_environment_template()' instead if decoding an
# Environment Template
job_template = decode_job_template(template=template_object)
except DecodeValidationError as e:
print(str(e))from openjd.model.v2023_09 import *
job_template = JobTemplate(
specificationVersion="jobtemplate-2023-09",
name="DemoJob",
steps=[
StepTemplate(
name="DemoStep",
script=StepScript(
actions=StepActions(
onRun=Action(
command="python",
args=["-c", "print('Hello world!')"]
)
)
)
)
]
)import json
from openjd.model import (
decode_job_template,
model_to_object,
)
from openjd.model.v2023_09 import *
job_template = JobTemplate(
specificationVersion="jobtemplate-2023-09",
name="DemoJob",
steps=[
StepTemplate(
name="DemoStep",
script=StepScript(
actions=StepActions(
onRun=Action(
command="echo",
args=["Hello world"]
)
)
)
)
]
)
obj = model_to_object(model=job_template)
print(json.dumps(obj))import os
from pathlib import Path
from openjd.model import (
DecodeValidationError,
create_job,
decode_job_template,
preprocess_job_parameters
)
job_template_path = Path("/absolute/path/to/job/template.json")
job_template = decode_job_template(
template={
"name": "DemoJob",
"specificationVersion": "jobtemplate-2023-09",
"parameterDefinitions": [
{ "name": "Foo", "type": "INT" }
],
"steps": [
{
"name": "DemoStep",
"script": {
"actions": {
"onRun": { "command": "python", "args": [ "-c", "print(r'Foo={{Param.Foo}}')" ] }
}
}
}
]
}
)
try:
parameters = preprocess_job_parameters(
job_template=job_template,
job_parameter_values={
"Foo": "12"
},
job_template_dir=job_template_path.parent,
current_working_dir=Path(os.getcwd())
)
job = create_job(
job_template=job_template,
job_parameter_values=parameters
)
except (DecodeValidationError, RuntimeError) as e:
print(str(e))from openjd.model import (
StepDependencyGraph,
create_job,
decode_job_template
)
job_template = decode_job_template(
template={
"name": "DemoJob",
"specificationVersion": "jobtemplate-2023-09",
"steps": [
{
"name": "Step1",
"script": {
"actions": {
"onRun": { "command": "python", "args": [ "-c", "print('Step1')" ] }
}
}
},
{
"name": "Step2",
"dependencies": [ { "dependsOn": "Step1" }, { "dependsOn": "Step3" }],
"script": {
"actions": {
"onRun": { "command": "python", "args": [ "-c", "print('Step2')" ] }
}
}
},
{
"name": "Step3",
"script": {
"actions": {
"onRun": { "command": "echo", "args": [ "Step3" ] }
}
}
},
]
}
)
job = create_job(job_template=job_template, job_parameter_values={})
dependency_graph = StepDependencyGraph(job=job)
for step in job.steps:
step_node = dependency_graph.step_node(stepname=step.name)
if step_node.in_edges:
name_list = ', '.join(edge.origin.step.name for edge in step_node.in_edges)
print(f"Step '{step.name}' depends upon: {name_list}")
if step_node.out_edges:
name_list = ', '.join(edge.dependent.step.name for edge in step_node.out_edges)
print(f"The following Steps depend upon '{step.name}': {name_list}")
print(f"\nSteps in topological order: {[step.name for step in dependency_graph.topo_sorted()]}")
# The following Steps depend upon 'Step1': Step2
# Step 'Step2' depends upon: Step1, Step3
# The following Steps depend upon 'Step3': Step2
# Steps in topological order: ['Step1', 'Step3', 'Step2']from openjd.model import (
StepParameterSpaceIterator,
create_job,
decode_job_template
)
job_template = decode_job_template(
template={
"name": "DemoJob",
"specificationVersion": "jobtemplate-2023-09",
"steps": [
{
"name": "DemoStep",
"parameterSpace": {
"taskParameterDefinitions": [
{ "name": "Foo", "type": "INT", "range": "1-5" },
{ "name": "Bar", "type": "INT", "range": "1-5" }
],
"combination": "(Foo, Bar)"
},
"script": {
"actions": {
"onRun": {
"command": "python",
"args": [ "-c", "print(f'Foo={{Task.Param.Foo}}, Bar={{Task.Param.Bar}}"]
}
}
}
},
]
}
)
job = create_job(job_template=job_template, job_parameter_values={})
for step in job.steps:
iterator = StepParameterSpaceIterator(space=step.parameterSpace)
print(f"Step '{step.name}' has {len(iterator)} Tasks")
for param_set in iterator:
print(param_set)
# Step 'DemoStep' has 5 Tasks
# {'Foo': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='1'), 'Bar': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='1')}
# {'Foo': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='2'), 'Bar': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='2')}
# {'Foo': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='3'), 'Bar': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='3')}
# {'Foo': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='4'), 'Bar': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='4')}
# {'Foo': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='5'), 'Bar': ParameterValue(type=<ParameterValueType.INT: 'INT'>, value='5')}You can download this package from:
You can verify the authenticity of the release artifacts using the gpg command line tool.
-
Download the desired release artifacts from the GitHub releases page. Make sure to download the corresponding PGP signature file (ending with
.sig) as well. For example, if you would like to verify your download of the wheel for version1.2.3, you should have the following files downloaded:openjd_model-1.2.3-py3-none-any.whl openjd_model-1.2.3-py3-none-any.whl.sig -
Install the
gpgcommand line tool. The installation process varies by operating system. Please refer to the GnuPG website for instructions: https://gnupg.org/download/ -
Save the following contents to a file called
openjobdescription-pgp.asc:-----BEGIN PGP PUBLIC KEY BLOCK----- mQINBGXGjx0BEACdChrQ/nch2aYGJ4fxHNQwlPE42jeHECqTdlc1V/mug+7qN7Pc C4NQk4t68Y72WX/NG49gRfpAxPlSeNt18c3vJ9/sWTukmonWYGK0jQGnDWjuVgFT XtvJAAQBFilQXN8h779Th2lEuD4bQX+mGB7l60Xvh7vIehE3C4Srbp6KJXskPLPo dz/dx7a+GXRiyYCYbGX4JziXSjQZRc0tIaxLn/GDm7VnXpdHcUk3qJitree61oC8 agtRHCH5s56E8wt8fXzyStElMkFIZsoLDlLp5lFqT81En9ho/+K6RLBkIj0mC8G7 BafpHKlxkrIgNK3pWACL93GE6xihqwkZMCAeqloVvkOTdfAKDHuDSEHwKxHG3cZ1 /e1YhtkPMVF+NMeoQavykUGVUT1bRoVNdk6bYsnbUjUI1A+JNf6MqvdRJyckZqEC ylkBekBp/SFpFHvQkRCpfVizm2GSrjdZKgXpm1ZlQJyMRVzc/XPbqdSWhz52r3IC eudwReHDc+6J5rs6tg3NbFfPVfCBMSqHlu1HRewWAllIp1+y6nfL4U3iEsUvZ1Y6 IV3defHIP3kNPU14ZWf3G5rvJDZrIRnjoWhDcaVmivmB/cSdDzphL5FovSI8dsPm iU/JZGQb3EvZq+nl4pOiK32hETJ/fgCCzgUA3WqGeFNUNSI9KYZgBe6daQARAQAB tDRPcGVuIEpvYiBEZXNjcmlwdGlvbiA8b3BlbmpvYmRlc2NyaXB0aW9uQGFtYXpv bi5jb20+iQJXBBMBCABBFiEEvBcWYrv5OB7Tl2sZovDwWbzECYcFAmXGjx0DGy8E BQkDwmcABQsJCAcCAiICBhUKCQgLAgMWAgECHgcCF4AACgkQovDwWbzECYcSHRAA itPYx48xnJiT6tfnult9ZGivhcXhrMlvirVYOqEtRrt0l18sjr84K8mV71eqFwMx GS7e4iQP6guqW9biQfMA5/Id8ZjE7jNbF0LUGsY6Ktj+yOlAbTR+x5qr7Svb7oEs TMB/l9HBZ1WtIRzcUk9XYqzvYQr5TT997A63F28u32RchJ+5ECAz4g/p91aWxwVo HIfN10sGzttoukJCzC10CZAVscJB+nnoUbB/o3bPak6GUxBHpMgomb0K5g4Z4fXY 4AZ9jKFoLgNcExdwteiUdSEnRorZ5Ny8sP84lwJziD3wuamVUsZ1C/KiQJBGTp5e LUY38J1oIwptw5fqjaAq2GQxEaIknWQ4fr3ZvNYUuGUt5FbHe5U5XF34gC8PK7v7 bT/7sVdZZzKFScDLfH5N36M5FrXfTaXsVbfrRoa2j7U0kndyVEZyJsKVAQ8vgwbJ w/w2hKkyQLAg3l5yO5CHLGatsfSIzea4WoOAaroxiNtL9gzVXzqpw6qPEsH9hsws HsPEQWXHmDQvFTNUU14qic1Vc5fyxCBXIAGAPBd20b+219XznJ5uBKUgtvnqcItj nMYe6Btxh+pjrTA15X/p81z6sB7dkL1hPHfawLhCEzJbIPyyBTQYqY00/ap4Rj7t kzSiyzBejniFfAZ6eYBWsej7uXUsVndBF1ggZynPTeE= =iaEm -----END PGP PUBLIC KEY BLOCK----- -
Import the OpenPGP key for Open Job Description by running the following command:
gpg --import --armor openjobdescription-pgp.asc -
Determine whether to trust the OpenPGP key. Some factors to consider when deciding whether or not to trust the above key are:
- The internet connection you’ve used to obtain the GPG key from this website is secure
- The device that you are accessing this website on is secure
If you have decided to trust the OpenPGP key, then edit the key to trust with
gpglike the following example:$ gpg --edit-key A2F0F059BCC40987 gpg (GnuPG) 2.0.22; Copyright (C) 2013 Free Software Foundation, Inc. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. pub 4096R/BCC40987 created: 2024-02-09 expires: 2026-02-08 usage: SCEA trust: unknown validity: unknown [ unknown] (1). Open Job Description <openjobdescription@amazon.com> gpg> trust pub 4096R/BCC40987 created: 2024-02-09 expires: 2026-02-08 usage: SCEA trust: unknown validity: unknown [ unknown] (1). Open Job Description <openjobdescription@amazon.com> Please decide how far you trust this user to correctly verify other users' keys (by looking at passports, checking fingerprints from different sources, etc.) 1 = I don't know or won't say 2 = I do NOT trust 3 = I trust marginally 4 = I trust fully 5 = I trust ultimately m = back to the main menu Your decision? 5 Do you really want to set this key to ultimate trust? (y/N) y pub 4096R/BCC40987 created: 2024-02-09 expires: 2026-02-08 usage: SCEA trust: ultimate validity: unknown [ unknown] (1). Open Job Description <openjobdescription@amazon.com> Please note that the shown key validity is not necessarily correct unless you restart the program. gpg> quit -
Verify the signature of the Open Job Description release via
gpg --verify. The command for verifying the example files from step 1 would be:gpg --verify ./openjd_model-1.2.3-py3-none-any.whl.sig ./openjd_model-1.2.3-py3-none-any.whl
We take all security reports seriously. When we receive such reports, we will investigate and subsequently address any potential vulnerabilities as quickly as possible. If you discover a potential security issue in this project, please notify AWS/Amazon Security via our vulnerability reporting page or directly via email to AWS Security. Please do not create a public GitHub issue in this project.
This project is licensed under the Apache-2.0 License.