# Retrieve a specific policy import. `GET /api/2/policies/{policyId}/imports/{importedPolicyId}` Returns the policy import of the policy identified by the `policyId` path parameter and imported policy identified by the `importedPolicyId` path parameter. Authentication (security requirement alternatives): ```json [ { "OpenIDConnect": [] }, { "NginxBasic": [] }, { "Bearer": [] } ] ``` - OpenIDConnect: openIdConnect. OpenID Connect Discovery URL. The placeholder is replaced by Swagger UI when configured. - NginxBasic: http (basic). Eclipse Ditto sandbox demo user (demo1 ... demo9) + password (demo) - Bearer: http (bearer). A JSON Web Token issued by a supported OAuth 2.0 Identity Provider. Parameters: - `policyId` (path, string, required) - The ID of the policy needs to follow the namespaced entity ID notation (see [Ditto documentation on namespaced entity IDs](https://www.eclipse.dev/ditto/basic-namespaces-and-names.html#namespaced-id)). The namespace needs to: * conform to the reverse domain name notation Type: string - `importedPolicyId` (path, string, required) - The ID of the imported policy needs to follow the namespaced entity ID notation (see [Ditto documentation on namespaced entity IDs](https://www.eclipse.dev/ditto/basic-namespaces-and-names.html#namespaced-id)). The namespace needs to: * conform to the reverse domain name notation Type: string - `If-Match` (header, string, optional) - The `If-Match` header which has to conform to RFC-7232 (Conditional Requests). Common usages are: * optimistic locking by specifying the `ETag` from a previous HTTP response, e.g. `If-Match: "hash:a75ece4e"` * retrieving or modifying a resource only if it already exists, e.g. `If-Match: *` Type: string - `If-None-Match` (header, string, optional) - The `If-None-Match` header, which has to conform to RFC-7232 (Conditional Requests). A common usage scenario is to modify a resource only if it does not yet exist, thus to create it, by specifying `If-None-Match: *`. Type: string - `if-equal` (header, string, optional) - The `if-equal` header can take the values 'update' (which is the default if omitted), 'skip' or 'skip-minimizing-merge'. If 'update' is defined, the entity will always be updated, even if it is equal before the update. If 'skip' is defined, the entity not be updated if it is equal before the update. In this case a 'Precondition Failed' 412 status is returned. If 'skip-minimizing-merge' is defined, the entity will not be updated if it is equal before the update. In this case a 'Precondition Failed' 412 status is returned. Additionally, merge/patch commands will be minimized to only the fields which actually changed, compared to the current state of the entity. Type: string enum: ["update","skip","skip-minimizing-merge"] - `timeout` (query, string, optional) - Defines how long the backend should wait for completion of the request, e.g. applied when waiting for requested acknowledgements via the `requested-acks` param. Can be specified without unit (then seconds are assumed) or together with `s`, `ms` or `m` unit. Example: `42s`, `1m`. The default (if omitted) and maximum timeout is `60s`. A value of `0` applies fire and forget semantics for the command resulting in setting `response-required=false`. Type: string Responses: - 200: The request successfully returned completed and returned is the policy import. Content type: application/json Type: PolicyImport Single policy import defining which policy entries of the referenced policy are imported. Schema: [PolicyImport](https://sourcey-ditto.pages.dev/http-api-doc/models/policyimport.md) Example: ```json { "entries": [ "default", "import" ] } ``` - `entries` (optional) Type: Array The policy entries to import from the referenced policy identified by their labels. In case the field is omitted or an empty array is provided, all policy entries defined as implicit ("importable": "implicit") are imported. default: [] Items: Type: string Label of a policy entry to import from the referenced policy. - `transitiveImports` (optional) Reference: [TransitiveImports](https://sourcey-ditto.pages.dev/http-api-doc/models/transitiveimports.md); Type: Array List of policy IDs from the imported policy's own imports that should be resolved transitively before extracting entries. This enables multi-level import chains where a template policy defines resources and an intermediate policy defines entries with "references" that add local subjects. Each entry is the policy ID of a policy that the directly imported policy itself imports from. Only the listed policy IDs are resolved — this is an explicit whitelist, not a recursive flag. Example: ```json [ "org.eclipse.ditto:policy-template" ] ``` - 304: The (sub-)resource has not been modified. This happens when you specified a If-None-Match header which matches the current ETag of the (sub-)resource. - 400: The request could not be completed. Possible reasons: * the `policyId` or the `importedPolicyId` does not conform to the namespaced entity ID notation (see [Ditto documentation on namespaced entity IDs](https://www.eclipse.dev/ditto/basic-namespaces-and-names.html#namespaced-id)) Content type: application/json Type: AdvancedError Schema: [AdvancedError](https://sourcey-ditto.pages.dev/http-api-doc/models/advancederror.md) - `status` (required) Type: integer The HTTP status of the error - `error` (required) Type: string The error code of the occurred exception - `message` (required) Type: string The message of the error - what went wrong - `description` (optional) Type: string A description how to fix the error or more details - `href` (optional) Type: string A link to further information about the error and how to fix it - 401: The request could not be completed due to missing authentication. Content type: application/json Type: AdvancedError Schema: [AdvancedError](https://sourcey-ditto.pages.dev/http-api-doc/models/advancederror.md) - `status` (required) Type: integer The HTTP status of the error - `error` (required) Type: string The error code of the occurred exception - `message` (required) Type: string The message of the error - what went wrong - `description` (optional) Type: string A description how to fix the error or more details - `href` (optional) Type: string A link to further information about the error and how to fix it - 402: The request could not be completed due to exceeded data volume or exceeded transaction count. Content type: application/json Type: AdvancedError Schema: [AdvancedError](https://sourcey-ditto.pages.dev/http-api-doc/models/advancederror.md) - `status` (required) Type: integer The HTTP status of the error - `error` (required) Type: string The error code of the occurred exception - `message` (required) Type: string The message of the error - what went wrong - `description` (optional) Type: string A description how to fix the error or more details - `href` (optional) Type: string A link to further information about the error and how to fix it - 403: The request could not be completed due to a missing or invalid API Token. Content type: application/json Type: AdvancedError Schema: [AdvancedError](https://sourcey-ditto.pages.dev/http-api-doc/models/advancederror.md) - `status` (required) Type: integer The HTTP status of the error - `error` (required) Type: string The error code of the occurred exception - `message` (required) Type: string The message of the error - what went wrong - `description` (optional) Type: string A description how to fix the error or more details - `href` (optional) Type: string A link to further information about the error and how to fix it - 404: The request could not be completed. The policy with the given ID or the policy import was not found in the context of the authenticated user. Content type: application/json Type: AdvancedError Schema: [AdvancedError](https://sourcey-ditto.pages.dev/http-api-doc/models/advancederror.md) - `status` (required) Type: integer The HTTP status of the error - `error` (required) Type: string The error code of the occurred exception - `message` (required) Type: string The message of the error - what went wrong - `description` (optional) Type: string A description how to fix the error or more details - `href` (optional) Type: string A link to further information about the error and how to fix it - 412: A precondition for reading or writing the (sub-)resource failed. This will happen for write requests, if you specified an If-Match or If-None-Match header, which fails the precondition check against the current ETag of the (sub-)resource. For read requests, this error may only happen for a failing If-Match header. In case of a failing If-None-Match header for a read request, status 304 will be returned instead. Content type: application/json Type: AdvancedError Schema: [AdvancedError](https://sourcey-ditto.pages.dev/http-api-doc/models/advancederror.md) - `status` (required) Type: integer The HTTP status of the error - `error` (required) Type: string The error code of the occurred exception - `message` (required) Type: string The message of the error - what went wrong - `description` (optional) Type: string A description how to fix the error or more details - `href` (optional) Type: string A link to further information about the error and how to fix it ## Examples ### cURL ```bash curl -X GET 'https://ditto.eclipseprojects.io/api/2/policies/string/imports/string' \ -H 'Authorization: Bearer YOUR_TOKEN' ``` ### JavaScript ```javascript const response = await fetch('https://ditto.eclipseprojects.io/api/2/policies/string/imports/string', { method: 'GET', headers: { 'Authorization': 'Bearer YOUR_TOKEN', }, }); const data = await response.text(); ``` ### Python ```python import requests response = requests.get( 'https://ditto.eclipseprojects.io/api/2/policies/string/imports/string', headers={ 'Authorization': 'Bearer YOUR_TOKEN', }, ) print(response.text) ```