John S. Ryan pivotaljohn

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pivotaljohn / path_to_yaml.yaml

Last active August 1, 2022 22:26

From a dot-path notation to a YAML structure.

	#@ load("@ytt:yaml", "yaml")
	#@ load("@ytt:regexp", "regexp")
	#@ load("@ytt:overlay", "overlay")

	#@ def as_dict(parts, leaf):
	#@ if len(parts) == 0:
	#@ return leaf
	#@ end
	#@ return {parts[0]: as_dict(parts[1:], leaf)}
	#@ end

pivotaljohn / template.yml

Last active July 19, 2022 16:46

Post-processing Data Values

	#@ load("@ytt:data", "data")
	#@ load("@ytt:yaml", "yaml")
	#@ load("@ytt:struct", "struct")

	#@ profiles = struct.make(full="full", is_any_enabled=lambda p: False)

	#@ def grypeValues(grype):
	#@ newGrype = yaml.decode(yaml.encode(grype))
	#@
	#@ if not profiles.is_any_enabled([profiles.full]) and not "metadataStore" in newGrype:

pivotaljohn / existing-config.yml

Last active July 14, 2022 21:36

Overlaying a variety of kinds of resources

	apiVersion: apps/v1
	kind: Deployment
	metadata:
	name: foodb
	namespace: knative-serving
	labels:
	app.kubernetes.io/name: knative-serving
	app.kubernetes.io/version: 1.0
	app.kubernetes.io/component: database
	spec: {}

pivotaljohn / config.yml

Last active June 30, 2022 14:40

Transform flat keyset into a list

	#@ load("@ytt:data", "data")
	#@ load("parse-input.star", "fruit_from_struct")
	---
	fruits: #@ fruit_from_struct(data.values)

pivotaljohn / config.yml

Created June 30, 2022 13:59

Insert options for an array, when it exists.

	#@ load("@ytt:data", "data")
	--- #@ data.values

pivotaljohn / .gitlab-ci.yml

Last active June 14, 2022 22:22

Native ytt equivalent of GitLab's !reference

	#! .gitlab-ci.yml
	#@ load("@ytt:template", "template")
	#@ load("helpers.lib.yaml", "setup", "teardown")

	test:
	script:
	- #@ template.replace(setup())
	- echo running my own command
	- #@ template.replace(teardown())

pivotaljohn / config.yml

Created May 22, 2022 16:23

Using an overlay within an overlay

	---
	vlans:
	- vlan-id: 10
	- vlan-id: 20
	- vlan-id: 30
	some_other_configuration: #! some other config here

pivotaljohn / config.yml

Last active May 22, 2022 15:34

Replacing an array item (rather than appending)

	kind: SecretProviderClass
	metadata:
	namespace: default
	name: db_credentials
	spec:
	provider: aws
	parameters:
	objects: \|
	- objectName: TO_BE_REPLACED_BY_YTT
	objectType: "secretsmanager"

pivotaljohn / images-tmpl.yml

Last active April 25, 2022 22:03

Using the example as the default contents of an array.

	#@ load("@ytt:data", "data")

	#@ def get_package_repository(repository_name, package_name):
	#@ if repository_name == "":
	#@ for repository in data.values.repositories:
	#@ for package in data.values.repositories[repository].packages:
	#@ if package.name == package_name:
	#@ return data.values.repositories[repository]
	#@ end
	#@ end

pivotaljohn / config.yaml

Created April 20, 2022 15:49

Extracting environment variable-set config for a Backstage app.

	#@ load("@ytt:data", "data")

	#@ def removeprefix(prefix, s):
	#@ return s[len(prefix):] if s.startswith(prefix) else s
	#@ end

	#@ def config_key_for(auth_var_expr):
	#@ var_name_parts = \
	#@ removeprefix("..._", auth_var_expr) \
	#@ .split("_")