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Add a PostgreSQL Extender Recipe (#48)
* Add extender Recipe Signed-off-by: Aaron Crawfis <[email protected]> * Update README Signed-off-by: Aaron Crawfis <[email protected]> --------- Signed-off-by: Aaron Crawfis <[email protected]>
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| /* | ||
| Copyright 2023 The Radius Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
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| @description('Information about what resource is calling this Recipe. Generated by Radius. For more information visit https://docs.radapp.dev/operations/custom-recipes/') | ||
| param context object | ||
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| @description('Name of the PostgreSQL database. Defaults to the name of the Radius resource.') | ||
| param database string = context.resource.name | ||
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| @description('PostgreSQL username') | ||
| param user string = 'postgres' | ||
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| @description('PostgreSQL password') | ||
| @secure() | ||
| #disable-next-line secure-parameter-default | ||
| param password string = 'P@ssword1234$$' | ||
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| @description('Tag to pull for the postgres container image.') | ||
| param tag string = '16-alpine' | ||
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| @description('Memory request for the postgres deployment.') | ||
| param memoryRequest string = '512Mi' | ||
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| @description('Memory limit for the postgres deployment') | ||
| param memoryLimit string = '1024Mi' | ||
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| import kubernetes as kubernetes { | ||
| kubeConfig: '' | ||
| namespace: context.runtime.kubernetes.namespace | ||
| } | ||
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| var uniqueName = 'postgres-${uniqueString(context.resource.id)}' | ||
| var port = 5432 | ||
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| // Based on https://hub.docker.com/_/postgres/ | ||
| resource postgresql 'apps/Deployment@v1' = { | ||
| metadata: { | ||
| name: uniqueName | ||
| } | ||
| spec: { | ||
| selector: { | ||
| matchLabels: { | ||
| app: 'postgresql' | ||
| resource: context.resource.name | ||
| } | ||
| } | ||
| template: { | ||
| metadata: { | ||
| labels: { | ||
| app: 'postgresql' | ||
| resource: context.resource.name | ||
|
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| // Label pods with the application name so `rad run` can find the logs. | ||
| 'radapp.io/application': context.application == null ? '' : context.application.name | ||
| } | ||
| } | ||
| spec: { | ||
| containers: [ | ||
| { | ||
| // This container is the running postgresql instance. | ||
| name: 'postgres' | ||
| image: 'postgres:${tag}' | ||
| ports: [ | ||
| { | ||
| containerPort: port | ||
| } | ||
| ] | ||
| resources: { | ||
| requests: { | ||
| memory: memoryRequest | ||
| } | ||
| limits: { | ||
| memory: memoryLimit | ||
| } | ||
| } | ||
| env: [ | ||
| { | ||
| name: 'POSTGRES_USER' | ||
| value: user | ||
| } | ||
| { | ||
| name: 'POSTGRES_PASSWORD' | ||
| value: password | ||
| } | ||
| { | ||
| name: 'POSTGRES_DB' | ||
| value: database | ||
| } | ||
| ] | ||
| } | ||
| ] | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| resource svc 'core/Service@v1' = { | ||
| metadata: { | ||
| name: uniqueName | ||
| labels: { | ||
| name: uniqueName | ||
| } | ||
| } | ||
| spec: { | ||
| type: 'ClusterIP' | ||
| selector: { | ||
| app: 'postgresql' | ||
| resource: context.resource.name | ||
| } | ||
| ports: [ | ||
| { | ||
| port: port | ||
| } | ||
| ] | ||
| } | ||
| } | ||
|
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| output result object = { | ||
| // This workaround is needed because the deployment engine omits Kubernetes resources from its output. | ||
| // This allows Kubernetes resources to be cleaned up when the resource is deleted. | ||
| // Once this gap is addressed, users won't need to do this. | ||
| resources: [ | ||
| '/planes/kubernetes/local/namespaces/${svc.metadata.namespace}/providers/core/Service/${svc.metadata.name}' | ||
| '/planes/kubernetes/local/namespaces/${postgresql.metadata.namespace}/providers/apps/Deployment/${postgresql.metadata.name}' | ||
| ] | ||
| values: { | ||
| host: '${svc.metadata.name}.${svc.metadata.namespace}.svc.cluster.local' | ||
| port: port | ||
| database: database | ||
| username: user | ||
| } | ||
| secrets: { | ||
| #disable-next-line outputs-should-not-contain-secrets | ||
| password: password | ||
| } | ||
| } |