@maif/pulumi-dynamic-provider-otoroshi

Pulumi Dynamic Provider for Otoroshi

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Manage Otoroshi resources (Services, Apikeys, etc...) through Pulumi.

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This tool allow to define resource in YAML format and provide a GitOps management approach.

Installation

Requirement

• Pulumi & Typescript
• Deployed and working Otoroshi (at least 1.5.18)
• Otoroshi Apikey to manage resources (and enough privileges)

Create a new pulumi project

Create a new Pulumi project and install the library

pulumi new typescript -y --dir my_project_dir
cd my_project_dir
npm install @maif/pulumi-dynamic-provider-otoroshi

Create a new stack

Create a new Pulumi stack and the configuration file (Ex : Pulumi.dev.yaml). Set your Otoroshi URL in otoroshi:endpoint

config:
  otoroshi:endpoint: http://otoroshi-api.oto.tools:8080

Use the dynamic provider

Modify the index.ts created by Pulumi with the following. Give it the PATH to your YAML resources folder as assetsRelativeFolder. Create a folder for each stack inside conf (ex: /conf/dev, /conf/preprod, etc...). Subdirectories of the PATH you provided will be scanned as well.

import { ResourceFileReader } from '@maif/pulumi-dynamic-provider-otoroshi'
import { resolve } from 'path'
import * as pulumi from '@pulumi/pulumi'

const myReader = new ResourceFileReader({ assetsRelativeFolder: resolve(__dirname, `../conf/${pulumi.getStack()}`) })

myReader.run()

export const otoroshiResources = myReader.getResourcesCreatedByKind()

Configure credentials

Credentials are not stored in pulumi stack or in code, you must set them as environement variables

# Windows
set OTOROSHI_CLIENT_ID=admin-api-apikey-id
set OTOROSHI_CLIENT_SECRET=admin-api-apikey-secret
# Linux
export OTOROSHI_CLIENT_ID=admin-api-apikey-id
export OTOROSHI_CLIENT_SECRET=admin-api-apikey-secret

Usage

pulumi stack select dev
pulumi preview
pulumi up

YAML Configurations examples

Each resource must be define in an individual file. The filename will be used to name the resource in the Pulumi state : you should use unique and relevant names. But you can organize folder and subfolders as you like.

For an example, see ./conf/test

Create minimal resources

Mandatory attributes are :

• GlobalConfig: kind, spec.otoroshiId
• ApiKey: kind, spec.clientId and spec.clientName
• Others kinds: kind, spec.id and spec.name

All attributes not provided wil be populated with default values.

kind: Tenant
spec:
  id: tenantyaml
  name: tenantyaml

Create full resources

You can also export existing resource from Otoroshi by clicking on the YAML button on resource UI.

apiVersion: proxy.otoroshi.io/v1
kind: Tenant
metadata:
  name: tenantyaml
spec:
  id: tenantyaml
  name: tenantyaml
  description: Default organization created with Pulumi
  metadata: {}
  tags: []

Import resources

For those who know the command pulumi import, it is not natively supported in dynamic provider (See pulumi/pulumi issue#7534). An alternative solution is implemented.

This mecanism allow to read a real resource and write to the Pulumi State. When importing, it is only reading on the provider.

To import a resource, you must:

• export resource from Otoroshi as YAML
• add the property metadata.import and set the value true
• after the import, you must remove the property metadata.import

For an example, see import-default-organization.yaml

GlobalConfig cannot be imported. It does not need to. You can export your existing GlobalConfig and it will override tbe existing one.

Refresh resources

Pulumi can compares the current known resources (i.e. : wanted state) with the real Otoroshi resource (i.e.: real state). When doing so, any changes are adopted into the current stack. It is a great tool to detect configuration drift.

Note that this command will NOT update YAML files in your git repo. You MUST updated them manually. If you do not, subsequent updates may still appear to be out of sync with respect to the Otoroshi source of truth.

pulumi refresh

Handle sensitive information

Since every resource configuration is stored in git, you cannot specify confidentials informations (i.e.: secrets, password, token, etc...). It is better to use an external vault to store them and use reference in Otoroshi.

Follow this documentation to configure and enable secrets management in Otoroshi.

After setting up, you can use reference instead of confidential information (See link above for reference format).

# Classic definition
kind: ApiKey
spec:
  clientId: minimal-apikey
  clientName: minimal-apikey
  clientSecret: confidentialPassThatShouldNotBeVisible

# Azure Keyvault reference to the secret name otoroshi-apikey-minimal-apikey, version latest
kind: ApiKey
spec:
  clientId: minimal-apikey
  clientName: minimal-apikey
  clientSecret: ${vault://azurevault/otoroshi-apikey-minimal-apikey/latest}

ResourceFileReader options

AJV validation schema ensure that mandatory attributes are presents. It is enable by default, but you can disable it with doValidate.

You can customise resource kind creating order with sortOrder. A default sorting order is already set to prevent dependencies issues.

const myReader = new ResourceFileReader({
  doValidate: false,
  sortOrder: ['ServiceGroup', 'ApiKey'],
})

Performances

Time to manage 50 organizations, 50 services and 100 Api Keys (using a local Pulumi stack) :

• creation : 5 minutes (preview: 59s, up: 4min16s)
• update (1 resource) : ~1 minutes (preview: 59s, up: 5s)
• update (10 resource) : ~1 minutes (preview: 59s, up: 10s)
• update (100 resource) : ~3 minutes (preview: 59s, up: 2min7s)
• delete (1 resource) : ~1 minutes (preview: 59s, up: 5s)
• delete (10 resource) : ~1 minutes (preview: 59s, up: 10s)
• delete (100 resource) : ~4 minutes (preview: 59s, up: 3min30s)

Writing time to the pulumi stack is impacted by the concept of dynamic provider : the provider code is serialize into each resources in the attribute. __provider. See Pulumi Function Serialization for more informations.

Roadmap

• Better handle the case of diff after doing a pulumi refresh with reals modifications. Actually you can only see that the resource need to be update (but not which attribute(s)). We need to be able to show comparison of differents attributes.

Limitations

• Otoroshi resource kind Admin (local admin) cannot be created with this solution (for now)
• Otoroshi experimentals resources cannot be created (error-templates, route-compositions, tunnels, etc...) (for now)

Workaround

• __provider : If some changes are done on the provider code, do pulumi up before doing any changes on the resources. It force the serialized provider (__provider in the pulumi state) informations to be updated for exising resouces. It is good pratice to avoid doing resources modification at the same time.
• Created ressource from the provider have only the id readable. It's because the provider has a generic and minimal implementation. It's do not know all attributes of all resources
• Dynamic Provider Ressource Type : Pulumi resources are created with the same type pulumi-nodejs:dynamic:Resource. It's hardcoded in the dynamic provider abstract class (See pulumi/pulumi nodejs/dynamic/index.ts#L204). It's a known current limitation (See pulumi/pulumi issue#9434).
• pulumi import is not natively supported (See pulumi/pulumi issue#7534). An alternative solution is implemented, See section Import existing resources