diff --git a/README_pipy.md b/README_pipy.md index 19aaa4190d0f945d07c8937c53252a263be3ae06..4cf2a9786e50ca3586a531fe4be1846a76387c5f 100644 --- a/README_pipy.md +++ b/README_pipy.md @@ -1,217 +1,111 @@ # OpenCAPIF SDK -This repository develops a Python Software Development Kit(SDK) which focuses on connecting to OpenCAPIF (Common API Framework for 3GPP Northbound APIs) in a simple way, lowering integration complexity and allowing developers to focus on Network Applications (Network Apps) or services development. +This repository develops a Python Software Development Kit (SDK) which facilitates integration with OpenCAPIF (Common API Framework for 3GPP Northbound APIs), significantly reducing integration complexity and enabling developers to focus on building Network Applications (Network Apps). -OpenCAPIF SDK provides a set of libraries to enable either CAPIF provider and invoker roles, and other functions to simplify procedures calls towards OpenCAPIF entity. +The SDK supports both CAPIF roles: **Invoker** and **Provider**, and provides simplified methods for interacting with OpenCAPIF. It is compatible with the following public releases: -Current version of OpenCAPIF SDK is compatible with following publicly available releases: - [OpenCAPIF Release 1.0](https://ocf.etsi.org/documentation/v1.0.0-release/) -- OpenCAPIF Release 2.0 +- [OpenCAPIF Release 2.0](https://ocf.etsi.org/documentation/v2.0.0-release/) -# Network App developers +## Network App Developers -In the scope of CAPIF, a Network App (Network Application) refers to an external application or service that interacts with the 3GPP network via standardized APIs. These Network Apps typically leverage the capabilities and services provided by the underlying mobile network infrastructure, such as network slicing, quality of service (QoS), or location services. +A Network App refers to an external application or service that interacts with the 3GPP network using standardized APIs. These apps can be created by network operators, third-party providers, or other entities to access advanced network services like QoS, network slicing, or location services via CAPIF. -Network Apps can be developed by third-party service providers, network operators, or other stakeholders to offer a wide range of services, including enhanced communication features, IoT solutions, or content delivery, and they use CAPIF as the unified framework for securely discovering, accessing, and utilizing 3GPP network APIs. +Network Apps take on one of two roles: -For that purpose Network Apps play 2 different roles when interacting with CAPIF: -- **Invoker**: a Network App acting as an Invoker is responsible for consuming APIs exposed by other services. This role represents an external application or service that calls the 3GPP northbound APIs to utilize the network’s functionalities. +- **Invoker**: Consumes APIs exposed by providers to access network capabilities. +- **Provider**: Exposes APIs/services to be consumed by invokers. A Provider includes: + - **AMF** (API Management Function): Manages onboarding/offboarding, monitoring, and auditing. + - **APF** (API Publishing Function): Publishes APIs to the CCF. + - **AEF** (API Exposing Function): Exposes APIs, validates authorizations, and logs usage. -- **Provider**: a Network App acting as a Provider is responsible for exposing its own APIs/services for use by Invokers. This role represents an entity that offers services through APIs, making them available to other external applications or Invokers.A provider also is distinguished for having three parts. +The SDK maps Python functions to CAPIF OpenAPI endpoints as defined in [3GPP TS 29.222 v18.5.0](https://www.etsi.org/deliver/etsi_ts/129200_129299/129222/18.05.00_60/ts_129222v180500p.pdf). A detailed mapping of supported endpoints is available in the full documentation. - - The **AMF (API Management Function)**, supplies the API provider domain with administrative capabilities. Some of these capabilities include, auditing the service API invocation logs received from the CCF, on-boarding/off-boarding new API invokers and monitoring the status of the service APIs.One provider can have only one AMF. +## Requirements - - The **APF (API Publishing Function)**, is responsible for the publication of the service APIs to CCF in order to enable the discovery capability to the API Invokers.One provider can have multiple APFs. +To use the OpenCAPIF SDK, a registered account on the CAPIF instance is needed. Contact the system administrator to obtain a CAPIF username and password. - - The **AEF (API Exposing Function)**, is responsible for the exposure of the service APIs. Assuming that API Invokers are authorized by the CCF, AEF validates the authorization and subsequently provides the direct communication entry points to the service APIs. AEF may also authorize API invokers and record the invocations in log files.One provider can have multiple AEFs +## Installation -OpenCAPIF SDK brings a set of functions to integrate with the 5G Core's function CAPIF, as defined in [3GPP Technical Specification (TS) 29.222 V18.5.0 Common API Framework for 3GPP Northbound APIs](https://www.etsi.org/deliver/etsi_ts/129200_129299/129222/18.05.00_60/ts_129222v180500p.pdf). This section shows the mapping between the Python functions available in this SDK and the CAPIF OpenAPI APIs defined the reference standard: +Install the SDK using pip: -| **3GPP CAPIF API** | **OpenCAPIF SDK function** | **Description** | -|-------------------------------------------------------|-------------------------------------------------------------|-------------------------------------------------------------| -| /onboardedInvokers (POST) | [onboard_invoker()](./doc/sdk_full_documentation.md#invoker-onboarding) | Registers a new invoker. | -| /onboardedInvokers/{onboardingId} (PUT) | [update_invoker()](./doc/sdk_full_documentation.md#update-and-offboard-invoker) | Updates an existing invoker for a specific `onboardingId`. | -| /onboardedInvokers/{onboardingId} (DELETE) | [offboard_invoker()](./doc/sdk_full_documentation.md#update-and-offboard-invoker) | Deletes an invoker for a specific `onboardingId`. | -| registrations (POST) | [onboard_provider()](./doc/sdk_full_documentation.md#provider-onboarding) | Registers a new service provider. | -| /registrations/{registrationId} (PUT) | [update_provider()](./doc/sdk_full_documentation.md#update-and-offboard-provider) | Updates a service provider's registration for a specific `registrationId`. | -| /registrations/{registrationId} (DELETE) | [offboard_provider()](./doc/sdk_full_documentation.md#update-and-offboard-provider) | Deletes a service provider's registration for a specific `registrationId`. | -| /allServiceAPIs (GET) | [discover()](./doc/sdk_full_documentation.md#discover-process) | Retrieves a list of all available service APIs. | -| /trustedInvokers (PUT//POST) | [get_tokens()](./doc/sdk_full_documentation.md#discover-process) | Registers or updates trusted invokers. | -| /securities/{securityId}/token (GET) | [get_tokens()](./doc/sdk_full_documentation.md#obtain-invoker-tokens) | Retrieves a security token for a specific `securityId`. This JWT token is used to query the targeted services. | -| /{apfId}/service-apis(POST) | [publish_services()](./doc/sdk_full_documentation.md#services-publishing) | Registers a new service API into the system for a specific `apfId` | -| /{apfId}/service-apis/{serviceApiId} (DELETE) | [unpublish_service()](./doc/sdk_full_documentation.md#services-deletion) | Deletes a service API from the system for a specific `apfId`and `serviceApiId` | -| /{apfId}/service-apis/{serviceApiId} (PUT) | [update_service()](./doc/sdk_full_documentation.md#services-update) | Updates the details of an existing service API for a specific `apfId`and `serviceApiId` | -| /{apfId}/service-apis/{serviceApiId} (GET) | [get_service()](./doc/sdk_full_documentation.md#get-services) | Retrieves the details of a specific service API for a specific `apfId` and `serviceApiId` | -| /{apfId}/service-apis (GET) | [get_all_services()](./doc/sdk_full_documentation.md#get-all-services) | Retrieves a list of all available service APIs for a specific `apfId` | -| /aef-security/v1/check-authentication (POST) | [check_authentication()](./doc/sdk_full_documentation.md#check_authentication) | This custom operation allows the API invoker to confirm the `supported_features` from the API exposing function(AEF) | -| /api-invocation-logs/v1/{aefId}/logs (POST) | [create_logs( aefId, api_invoker_id)](./doc/sdk_full_documentation.md#create_logs) | This operation allows to the Provider to notice to the CCF about the query of an invoker for an especific `aefId` -| /capif-events/v1/{subscriberId}/subscriptions (POST) | [create_subscription(name, id)](./doc/sdk_full_documentation.md#create_subscription) | This operation allows to the Invoker/AEF/APF/AMF to ask to the CCF about notifications related to certain functionalities. -| /capif-events/v1/{subscriberId}/subscriptions/{subscriptionId} (DELETE) | [delete_subscription(name, id)](./doc/sdk_full_documentation.md#delete_subscription) | This operation allows to the Invoker/AEF/APF/AMF to withdraw the petition to receive notifications related to certain functionalities. -| /capif-events/v1/{subscriberId}/subscriptions/{subscriptionId} (PUT) | [update_subscription(name, id)](./doc/sdk_full_documentation.md#update_subscription) | This operation allows to the Invoker/AEF/APF/AMF to modify to the petition to receive notifications related to certain functionalities. **ONLY AVAILABLE IN OPENCAPIF RELEASE 2** -| /capif-events/v1/{subscriberId}/subscriptions/{subscriptionId} (PATCH) | [patch_subscription(name, id)](./doc/sdk_full_documentation.md#patch_subscription) | This operation allows to the Invoker/AEF/APF/AMF to modify to the petition to receive notifications related to certain functionalities. **ONLY AVAILABLE IN OPENCAPIF RELEASE 2** - -NOTE: Above mentioned CAPIF APIs are defined in these 3GPP references: -- [CAPIF Invoker API specification](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_API_Invoker_Management_API.yaml) -- [CAPIF Provider API specification](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_API_Provider_Management_API.yaml) -- [CAPIF Discover API specification](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Discover_Service_API.yaml) -- [CAPIF Publish API specification](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Publish_Service_API.yaml) -- [CAPIF Security API specification](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Security_API.yaml) -- [AEF Security API specification](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_AEF_Security_API.yaml) -- [CAPIF Logging API management](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Logging_API_Invocation_API.yaml) -- [CAPIF Events API management](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Events_API.yaml) -NOTE: In the [3GPP Technical Specification (TS) 29.222 V18.5.0 Common API Framework for 3GPP Northbound APIs](https://www.etsi.org/deliver/etsi_ts/129200_129299/129222/18.05.00_60/ts_129222v180500p.pdf) the `service` concept is understood as equal as the `API` concept. - -## OpenCAPIF SDK requirements - -To use the OpenCAPIF SDK, a registered user account within the target CAPIF instance is required. - -**Contact the administrator to obtain the required predefined credentials (CAPIF username and password).** - -## OpenCAPIF SDK installation - -To use the SDK, binary installer for the latest version is available at the [Python Package Index (Pipy)](https://pypi.org/project/opencapif-sdk/) - -```console +```bash pip install opencapif_sdk ``` -## Configuration via `capif_sdk_config.json` -### Common Fields for Invoker and Provider +## Configuration Overview -Regardless of the role (Invoker or Provider), the following fields are mandatory: +Configuration is done through a JSON file (`capif_sdk_config.json`) with common and role-specific fields. -- `capif_host` -- `register_host` -- `capif_https_port` -- `capif_register_port` -- `capif_username` -- `capif_password` +### Common Fields (Invoker & Provider) +- `capif_host`, `register_host` +- `capif_https_port`, `capif_register_port` +- `capif_username`, `capif_password` - `debug_mode` -### Network App Invoker +### Invoker-specific Fields +- `invoker_folder`, `capif_callback_url` +- `supported_features`, `cert_generation` +- Optional: `discover_filter`, `check_authentication_data` -When configuring the SDK as a **Network App Invoker**, the following fields must be provided: +### Provider-specific Fields +- `provider_folder`, `supported_features`, `cert_generation` +- `APFs`, `AEFs`, `publish_req`, `api_description_path` -- `invoker_folder` -- `capif_callback_url` -- `supported_features` -- `cert_generation` (fields such as `csr_common_name`, `csr_country_name`, etc.) +## Using `discover_filter` -**Optional:** -- `discover_filter`: useful to enable the discovery of specific APIs. Some fields under `discover_filter` structure required to be configured when using discovery filters. Check devoted section below, -- `check_authentication_data`: useful to use `check_authentication()` function to validate features from a target provider, it will be required to fill up the `ip` and `port` parameters within the `check_authentication_data` variable. +The `discover_filter` must comply with the [Discover Service API](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Discover_Service_API.yaml). It allows filtering by specific fields (e.g., `api-name`) during discovery. -### Network App Provider +## Using `publish_req` -For SDK configuration as a **Network App Provider**, the following fields are required: +This section enables API publishing using the [CAPIF Publish Service API](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Publish_Service_API.yaml). Required fields include: -- `provider_folder` -- `suported_features` -- `cert_generation` (fields such as `csr_common_name`, `csr_country_name`, etc.) -- `APFs` -- `AEFs` -- `publish_req` +- `service_api_id` +- `publisher_apf_id` +- `publisher_aefs_ids` - `api_description_path` -## Configuration of `discover_filter` - -The `discover_filter` section adheres to the parameters defined in the GET request schema of the [Discover Services API](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Discover_Service_API.yaml). - -To use the service discovery functionality, the `discover_filter` fields should be populated with the desired filters. **It is important to note that fields such as `api-name` must contain only one entry of each type (i.e., no lists are allowed in api-name).** - -For instance if the invoker fill the `api-name` field, the `discover()` functionality will retrieve only one API, the one that matches the exact name of the `api-name`. - -Before running the Invoker Service Discovery Functionality, the Invoker must be onboarded to CAPIF. - -## Configuration of `publish_req` - -This section is mandatory when using the [CAPIF Publish Service API](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Publish_Service_API.yaml). The following fields are required: - -- `service_api_id`: Example: `"02eff6e1b3a8f7c8044a92ee8a30bd"` -- `publisher_apf_id`: Example: `"APFa165364a379035d14311deadc04332"` -- `publisher_aefs_ids`: An array of selected AEF IDs. Example: `["AEFfa38f0e855bffb420e4994ecbc8fb9", "AEFe8bfa711f4f0c95ba0b382508e6382"]` - -The `api_description_path` must point to the Publish API to be shared, and it should follow the [ServiceAPIDescription](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Publish_Service_API.yaml) schema. +A helper is available to translate OpenAPI to ServiceAPIDescription format: -To obtain this schema, opencapif_sdk has a facility to translate Openapi structures to ServiceAPIDescription schemas. - -If the `publisher_aefs_ids` do not match the `aefProfiles` in the API description, an error will be raised by the SDK. - -## Descriptions of `capif_sdk_config` Fields - -- `invoker_folder`: The path (relative or absolute) where invoker information (certificates, keys, etc.) is stored. -- `provider_folder`: The path (relative or absolute) where provider information is stored. -- `supported_features`: A string used to indicate the features supported by an API. The string shall contain a bitmask indicating supported features in hexadecimal representation Each character in the string shall take a value of "0" to "9", "a" to "f" or "A" to "F". [More information](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29571_CommonData.yaml) -- `capif_host`: The domain name of the CAPIF host. -- `register_host`: The domain name of the register host. -- `capif_https_port`: The CAPIF host port number. -- `capif_register_port`: The register host port number. -- `capif_callback_url`: The URL used by CAPIF to send invoker notifications ([currently unavailable](sdk-issues.md)). -- `cert_generation`: Fields for certificate generation, with `csr_country_name` requiring a two-letter country code. -- `capif_username`: The CAPIF username. -- `capif_password`: The CAPIF password. -- `apfs`: The number of APFs to be onboarded as a provider (e.g., `5`). -- `aefs`: The number of AEFs to be onboarded as a provider (e.g., `2`). -- `debug_mode`: A boolean value to enable or disable SDK logs (e.g., `True` or `False`). -- [`discover_filter`](#configuration-of-discover_filter): Fields for configuring invoker service discovery. -- [`publish_req`](#configuration-of-publish_req): Fields required for API publishing. -- `api_description_path`: The path to the [ServiceAPIDescription](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Publish_Service_API.yaml) JSON file. -- `check_authentication_data`: The `ip` and `port` of the target Provider's AEF to get their supported features from. - - - -## Important information for Provider consumers - -Within the `provider_folder`, the SDK stores the created folders named with prefix of the provided `capif_username` that has been registered from administrator. At each folder, there will be found the following files: - -- `provider_capif_ids.json`: contains all the APFs and AEFs ids that have already onboarded with this `capif_username`, -- `capif_<api_name>_<api_id>.json`: if it is already published or updated an API, it will contain a copy of the last payload, -- `service_received.json`: if it is already used to get an API or get all APIs functionality, it will contain the response of last request, -- `provider_service_ids.json`: contains the currently published APIs with their `api_id`. - -All the configuration values are available within the object `capif_provider_connector`. - -The `provider_service_ids` variable stores the `provider_service_ids.json` content in a dictionary form. +```python +from opencapif_sdk import api_schema_translator +translator = api_schema_translator("./path/to/openapi.yaml") +translator.build("https://192.168.1.10:8080/exampleAPI/v1", "0", "0") +``` -The `provider_capif_ids` variable stores the `provider_capif_ids.json` content in a dictionary form. +## Configuration Field Descriptions -## Important information for Invoker consumer +Key parameters include: +- `capif_username`, `capif_password`: Credentials +- `supported_features`: Hex bitmask (e.g., "4") +- `debug_mode`: Enables debug logging +- `api_description_path`: Path to the ServiceAPIDescription JSON -In the `invoker_folder`, it will be located several folders with each `capif_username` it has been onboarded as a provider. For each folder, it will be found: +## Provider Artifacts -- `capif_api_security_context_details.json`: This file contains the information of the invoker. It will contain: - - 1. The `api_invoker_id`, - 2. If the Service Discovery Functionality has already been used , it will be found all the available APIs with their information, - 3. If the Service Get Token functionality has already been used , it will be found the access token for using the APIs that has already been discovered. +In `provider_folder/<capif_username>/`, the SDK stores: +- `provider_capif_ids.json` +- `capif_<api_name>_<api_id>.json` +- `service_received.json` +- `provider_service_ids.json` -The `token` variable is also available for retrieving the JWT token after the `get_tokens()` method. +## Invoker Artifacts -The `invoker_capif_details` variable stores the `capif_api_security_context_details.json` content in a dictionary form. +In `invoker_folder/<capif_username>/`, the SDK stores: +- `capif_api_security_context_details.json`, which includes: + - `api_invoker_id` + - Available API metadata (after discovery) + - JWT token (after `get_tokens()`) -## Openapi translation +## Known Issues -The `api_description_path` must point to the Publish API to be shared, and it should follow the [ServiceAPIDescription](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Publish_Service_API.yaml) schema. +The following APIs are not yet supported: +- [CAPIF Access Control Policy](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Access_Control_Policy_API.yaml) +- [CAPIF Auditing API](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Auditing_API.yaml) +- [CAPIF Routing Info](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Routing_Info_API.yaml) +- Security API operations: + - `/trustedInvokers/{apiInvokerId}` (GET, DELETE) + - `/trustedInvokers/{apiInvokerId}/delete` (POST) -This schema could be obtained by applying this code. -```python - import opencapif_sdk - - translator = api_schema_translator("./path/to/openapi.yaml") - translator.build("https://192.168.1.10:8080/exampleAPI/v1", "0", "0") +Some publishing operations fail if the number of AEFs/APFs is increased after initial onboarding. -``` -This code will read `openapi.yaml`, ensure the structure of it and translate the content into ServiceAPIDescription schema, then will create a .json named `api_description_name`. Also it is necessary to fill the ip and port fields to create correctly the schema. -# OpenCAPIF SDK known issues - -There are some features which **are not currently available at latest OpenCAPIF SDK release**. Those are assumed to be technical debt and might be available in future releases: - - - [CAPIF Access control policy management](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Access_Control_Policy_API.yaml) - - [CAPIF Auditing API management](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Auditing_API.yaml) - - [CAPIF Events API management](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Events_API.yaml) - - [CAPIF Logging API management](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Logging_API_Invocation_API.yaml) - - [CAPIF Routing info API management](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Routing_Info_API.yaml) - - [CAPIF Security API management](https://github.com/jdegre/5GC_APIs/blob/Rel-18/TS29222_CAPIF_Security_API.yaml) - - /trustedInvokers/{apiInvokerId}/delete (POST) - - /trustedInvokers/{apiInvokerId} (GET) - - /trustedInvokers/{apiInvokerId} (DELETE) diff --git a/doc/sdk_developers.md b/doc/sdk_developers.md index 1d5d977dd2431c035b33cd47cf0c099910278c90..6866cd267ab6e3128f4b2668ae9278097c200ceb 100644 --- a/doc/sdk_developers.md +++ b/doc/sdk_developers.md @@ -56,7 +56,7 @@ This article explains how to solve it [here](https://laict.medium.com/install-py 2. Clone GitHub repository: ```console -git clone https://github.com/Telefonica/pesp_capif_sdk.git +git clone https://labs.etsi.org/rep/ocf/sdk.git ``` ```console