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Replicated SDK API (Beta)

The Replicated SDK provides an API that you can use to embed Replicated functionality in your Helm chart application.

For example, if your application includes a UI where users manage their application instance, then you can use the /api/v1/app/updates endpoint to include messages in the UI that encourage users to upgrade when new versions are available. You could also revoke access to the application during runtime when a license expires using the /api/v1/license/fields endpoint.

For more information about how to get started with the Replicated SDK, see About the Replicated SDK (Beta).

Access the SDK API​

The Replicated SDK API is available after the Replicated SDK is installed and initialized in a cluster. For information about installing the SDK, see Installing with Helm.

After the SDK is installed, the Replicated SDK API service is exposed at replicated:3000. To verify where the Replicated SDK API service is exposed, you can run kubectl get service -A.

app​

GET /app/info​

List details about an application instance, including the app name, location of the Helm chart in the Replicated OCI registry, and details about the current application release that the instance is running.

/api/v1/app/info

Response:

{
  "appSlug": "my-app",
  "appName": "My App",
  "appStatus": "ready",
  "helmChartURL": "oci://registry.replicated.com/my-app/beta/my-helm-chart",
  "currentRelease": {
    "versionLabel": "0.1.72",
    "channelID": "2CBDxNwDH1xyYiIXRTjiB7REjKX",
    "channelName": "Beta",
    "createdAt": "2023-05-28T16:31:21Z",
    "releaseNotes": "",
    "helmReleaseName": "my-helm-chart",
    "helmReleaseRevision": 5,
    "helmReleaseNamespace": "my-helm-chart"
  }
}

GET /app/updates​

List details about the releases that are available to an application instance for upgrade, including the version label, created timestamp, and release notes.

/api/v1/app/updates

Response:

[
  {
    "versionLabel": "0.1.15",
    "createdAt": "2023-05-12T15:48:45.000Z",
    "releaseNotes": "Awesome new features!"
  }
]

GET /app/history​

List details about the releases that an application instance has installed previously.

/api/v1/app/history

Response:

{
  "releases": [
    {
      "versionLabel": "0.1.70",
      "channelID": "2CBDxNwDH1xyYiIXRTjiB7REjKX",
      "channelName": "Stable",
      "createdAt": "2023-05-12T17:43:51Z",
      "releaseNotes": "",
      "helmReleaseName": "echo-server",
      "helmReleaseRevision": 2,
      "helmReleaseNamespace": "echo-server-helm"
    }
  ]
}

POST /app/custom-metrics​

Send custom application metrics. For more information and examples see Configuring Custom Metrics.

POST /app/instance-tags​

Programmatically set new instance tags or overwrite existing tags. Instance tags are key-value pairs, where the key and the value are strings.

Setting a tag with the name key will set the instance's name in the vendor portal.

The force parameter defaults to false. If force is false, conflicting pre-existing tags will not be overwritten and the existing tags take precedence. If the force parameter is set to true, any conflicting pre-existing tags will be overwritten.

To delete a particular tag, set the key's value to an empty string "".

POST http://replicated:3000/api/v1/app/instance-tags

Request:

{
  "data": {
    "force": false,
    "tags": {
      "name": "my-instance-name",
      "preExistingKey": "will-not-be-overwritten",
      "cpuCores": "10",
      "supportTier": "basic"
    }
  }
}

Response: Status 200 OK

license​

GET /license/info​

List details about the license that was used to install, including the license ID, type, the customer name, and the channel the customer is assigned.

/api/v1/license/info

Response:

{
  "licenseID": "YiIXRTjiB7R...",
  "channelID": "2CBDxNwDH1xyYiIXRTjiB7REjKX",
  "channelName": "Stable",
  "customerName": "Example Customer",
  "customerEmail": "[email protected]",
  "licenseType": "dev"
}

GET /license/fields​

List details about all the fields in the license that was used to install, including the field names, descriptions, values, and signatures.

/api/v1/license/fields

Response:

{
  "expires_at": {
    "name": "expires_at",
    "title": "Expiration",
    "description": "License Expiration",
    "value": "2023-05-30T00:00:00Z",
    "valueType": "String",
    "signature": {
      "v1": "Vs+W7+sF0RA6UrFEJcyHAbC5YCIT67hdsDdqtJTRBd4ZitTe4pr1D/SZg2k0NRIozrBP1mXuTgjQgeI8PyQJc/ctQwZDikIEKFW0sVv0PFPQV7Uf9fy7wRgadfUxkagcCS8O6Tpcm4WqlhEcgiJGvPBki3hZLnMO9Ol9yOepZ7UtrUMVsBUKwcTJWCytpFpvvOLfSNoHxMnPuSgpXumbHZjvdXrJoJagoRDXPiXXKGh02DOr58ncLofYqPzze+iXWbE8tqdFBZc72lLayT1am3MN0n3ejCNWNeX9+CiBJkqMqLLkjN4eugUmU/gBiDtJgFUB2gq8ejVVcohqos69WA=="
    }
  },
  "numSeats": {
    "name": "numSeats",
    "title": "Number of Seats",
    "value": 10,
    "valueType": "Integer",
    "signature": {
      "v1": "UmsYlVr4+Vg5TWsJV6goagWUM4imdj8EUUcdau7wIzfcU0MuZnv3UNVlwVE/tCuROCMcbei6ygjm4j5quBdkAGUyq86BCtohg/SqRsgVoNV6BN0S+tnqJ7w4/nqRVBc2Gsn7wTYNXiszLMkmfeNOrigLgsrtaGJmZ4IsczwI1V5Tr+AMAgrACL/UyLg78Y6EitKFW4qvJ9g5Q8B3uVmT+h9xTBxJFuKTQS6qFcDx9XCu+bKqoSmJDZ8lwgwpJDAiBzIhxiAd66lypHX9cpOg5A7cKEW+FLdaBKQdNRcPHQK2O9QwFj/NKEeCJEufuD3OeV8MSbN2PCehMzbj7tXSww=="
    }
  }
}

GET /license/fields/{field_name}​

List details about one of the fields in the license that was used to install, including the field name, description, value, and signature.

/api/v1/license/fields/\{field_name\}

Example request:

curl replicated:3000/api/v1/license/fields/expires_at

Response:

{
  "name": "expires_at",
  "title": "Expiration",
  "description": "License Expiration",
  "value": "2023-05-30T00:00:00Z",
  "valueType": "String",
  "signature": {
    "v1": "c6rsImpilJhW0eK+Kk37jeRQvBpvWgJeXK2MD0YBlIAZEs1zXpmvwLdfcoTsZMOj0lZbxkPN5dPhEPIVcQgrzfzwU5HIwQbwc2jwDrLBQS4hGOKdxOWXnBUNbztsHXMqlAYQsmAhspRLDhBiEoYpFV/8oaaAuNBrmRu/IVAW6ahB4KtP/ytruVdBup3gn1U/uPAl5lhzuBifaW+NDFfJxAXJrhdTxMBxzfdKa6dGmlGu7Ou/xqDU1bNF3AuWoP3C78GzSBQrD1ZPnu/d+nuEjtakKSX3EK6VUisNucm8/TFlEVKUuX7hex7uZ9Of+UgS1GutQXOhXzfMZ7u+0zHXvQ=="
  }
}

Examples​

This section provides example use cases for the Replicated SDK API.

Support Update Checks in Your Application​

The api/v1/app/updates endpoint returns details about new releases that are available to an instance for upgrade. You could use the api/v1/app/updates endpoint to allow your users to easily check for available updates from your application.

Additionally, to make it easier for users to upgrade to new versions of your application, you could provide customer-specific upgrade instructions in your application by injecting values returned by the /api/v1/license/info and /api/vi/app/info endpoints.

The following examples show how you could include a page in your application that lists available updates and also provides customer-specific upgrade instructions:

a user interface showing a list of available releases View a larger version of this image

user-specific application upgrade instructions displayed in a dialog View a larger version of this image

To use the SDK API to check for available application updates and provide customer-specific upgrade instructions:

  1. From your application, call the api/v1/app/updates endpoint to return available updates for the application instance. Use the response to display available upgrades for the customer.

    curl replicated:3000/api/v1/app/updates

    Example response:

    [
      {
        "versionLabel": "0.1.15",
        "createdAt": "2023-05-12T15:48:45.000Z",
        "releaseNotes": "Awesome new features!"
      }
    ]

  2. For each available release, add logic that displays the required upgrade commands with customer-specific values. To upgrade, users must first run helm registry login to authenticate to the Replicated registry. Then, they can run helm upgrade:

    1. Inject customer-specific values into the helm registry login command:
    helm registry login REGISTRY_DOMAIN --username EMAIL --password LICENSE_ID

    The helm registry login command requires the following components:

    • REGISTRY_DOMAIN: The domain for the registry where your Helm chart is pushed. The registry domain is either replicated.registry.com or a custom domain that you added.

    • EMAIL: The customer email address is available from the /api/v1/license/info endpoint in the customerEmail field.

    • LICENSE_ID The customer license ID is available from the /api/v1/license/info endpoint in the licenseID field.

    1. Inject customer-specific values into the helm upgrade command:

      helm upgrade -n NAMESPACE RELEASE_NAME HELM_CHART_URL

      The following describes where the values in the helm upgrade command are available:

      • NAMESPACE: The release namespace is available from the /api/v1/app/info endpoint in the currentRelease.helmReleaseNamespace

      • RELEASE_NAME: The release name is available from the /api/v1/app/info endpoint in the currentRelease.helmReleaseName field.

      • HELM_CHART_URL: The URL of the Helm chart at the OCI registry is available from the /api/v1/app/info endpoint in the helmChartURL field.

Revoke Access at Runtime When a License Expires​

You can use the Replicated SDK API /api/v1/license/fields/{field_name} endpoint to revoke a customer's access to your application during runtime when their license expires.

To revoke access to your application when a license expires:

  1. In the vendor portal, click Customers. Select the target customer and click the Manage customer tab. Alternatively, click + Create customer to create a new customer.

  2. Under Expiration policy:

    1. Enable Customer's license has an expiration date.

    2. For When does this customer expire?, use the calendar to set an expiration date for the license.

expiration policy field in the manage customer page

View a larger version of this image

  1. Install the Replicated SDK as a standalone component in your cluster. This is called integration mode. Installing in integration mode allows you to develop locally against the SDK API without needing to create releases for your application in the vendor portal. See Developing Against the SDK API.

  2. In your application, use the /api/v1/license/fields/expires_at endpoint to get the expires_at field that you defined in the previous step.

    Example:

    curl replicated:3000/api/v1/license/fields/expires_at
    {
      "name": "expires_at",
      "title": "Expiration",
      "description": "License Expiration",
      "value": "2023-05-30T00:00:00Z",
      "valueType": "String",
      "signature": {
        "v1": "c6rsImpilJhW0eK+Kk37jeRQvBpvWgJeXK2M..."
      }
    }

  3. Add logic to your application to revoke access if the current date and time is more recent than the expiration date of the license.

  4. (Recommended) Use signature verification in your application to ensure the integrity of the license field. See Verifying License Field Signatures with the Replicated SDK API.