ONAP Application Controller

Table of Contents

• Getting Started
  • Helpful Background Information
  • Prerequisites
  • How to Install
  • Testing
• Configuration
  • Example Properties
  • Connection Properties
  • Authentication Properties
  • Healthcheck Properties
  • Request Properties
  • SSL Properties
  • Throttle Properties
  • Proxy Properties
  • Mongo Properties
  • Device Broker Properties
• Using this Adapter
  • Generic Adapter Calls
  • Adapter Cache Calls
  • Adapter Broker Calls
  • Specific Adapter Calls
  • Authentication
• Additional Information
  • Enhancements
  • Contributing
  • Helpful Links
  • Node Scripts
• Troubleshoot
  • Connectivity Issues
  • Functional Issues

Getting Started

These instructions will help you get a copy of the project on your local machine for development and testing. Reading this section is also helpful for deployments as it provides you with pertinent information on prerequisites and properties.

Helpful Background Information

There is Adapter documentation available on the Itential Documentation Site. This documentation includes information and examples that are helpful for:

Authentication
IAP Service Instance Configuration
Code Files
Endpoint Configuration (Action & Schema)
Mock Data
Adapter Generic Methods
Headers
Security
Linting and Testing
Build an Adapter
Troubleshooting an Adapter

Others will be added over time. Want to build a new adapter? Use the Itential Adapter Builder

Prerequisites

The following is a list of required packages for installation on the system the adapter will run on:

Node.js
npm
Git

The following list of packages are required for Itential opensource adapters or custom adapters that have been built utilizing the Itential Adapter Builder. You can install these packages by running npm install inside the adapter directory.

Package	Description
@itentialopensource/adapter-utils	Runtime library classes for all adapters; includes request handling, connection, authentication throttling, and translation.
ajv	Required for validation of adapter properties to integrate with Onap_appc.
axios	Utilized by the node scripts that are included with the adapter; helps to build and extend the functionality.
commander	Utilized by the node scripts that are included with the adapter; helps to build and extend the functionality.
dns-lookup-promise	Utilized by the node scripts that are included with the adapter; helps to build and extend the functionality.
fs-extra	Utilized by the node scripts that are included with the adapter; helps to build and extend the functionality.
mocha	Testing library that is utilized by some of the node scripts that are included with the adapter.
mocha-param	Testing library that is utilized by some of the node scripts that are included with the adapter.
mongodb	Utilized by the node scripts that are included with the adapter; helps to build and extend the functionality.
nyc	Testing coverage library that is utilized by some of the node scripts that are included with the adapter.
ping	Utilized by the node scripts that are included with the adapter; helps to build and extend the functionality.
readline-sync	Utilized by the node script that comes with the adapter; helps to test unit and integration functionality.
semver	Utilized by the node scripts that are included with the adapter; helps to build and extend the functionality.
winston	Utilized by the node scripts that are included with the adapter; helps to build and extend the functionality.

If you are developing and testing a custom adapter, or have testing capabilities on an Itential opensource adapter, you will need to install these packages as well.

chai
eslint
eslint-config-airbnb-base
eslint-plugin-import
eslint-plugin-json
testdouble

How to Install

1. Set up the name space location in your IAP node_modules.

cd /opt/pronghorn/current/node_modules (* could be in a different place)
if the @itentialopensource directory does not exist, create it:
    mkdir @itentialopensource

2. Clone/unzip/tar the adapter into your IAP environment.

cd \@itentialopensource
git clone git@gitlab.com:\@itentialopensource/adapters/adapter-onap_appc
or
unzip adapter-onap_appc.zip
or
tar -xvf adapter-onap_appc.tar

3. Run the adapter install script.

cd adapter-onap_appc
npm install
npm run lint:errors
npm run test

4. Restart IAP

systemctl restart pronghorn

5. Create an adapter service instance configuration in IAP Admin Essentials GUI

6. Copy the properties from the sampleProperties.json and paste them into the service instance configuration in the inner/second properties field.

7. Change the adapter service instance configuration (host, port, credentials, etc) in IAP Admin Essentials GUI

For an easier install of the adapter use npm run adapter:install, it will install the adapter in IAP. Please note that it can be dependent on where the adapter is installed and on the version of IAP so it is subject to fail. If using this, you can replace step 3-5 above with these:

3. Install adapter dependencies and check the adapter.

cd adapter-onap_appc
npm run adapter:install

4. Restart IAP

systemctl restart pronghorn

5. Change the adapter service instance configuration (host, port, credentials, etc) in IAP Admin Essentials GUI

Testing

Mocha is generally used to test all Itential Opensource Adapters. There are unit tests as well as integration tests performed. Integration tests can generally be run as standalone using mock data and running the adapter in stub mode, or as integrated. When running integrated, every effort is made to prevent environmental failures, however there is still a possibility.

Unit Testing

Unit Testing includes testing basic adapter functionality as well as error conditions that are triggered in the adapter prior to any integration. There are two ways to run unit tests. The prefered method is to use the testRunner script; however, both methods are provided here.

node utils/testRunner --unit

npm run test:unit
npm run test:baseunit

To add new unit tests, edit the test/unit/adapterTestUnit.js file. The tests that are already in this file should provide guidance for adding additional tests.

Integration Testing - Standalone

Standalone Integration Testing requires mock data to be provided with the entities. If this data is not provided, standalone integration testing will fail. When the adapter is set to run in stub mode (setting the stub property to true), the adapter will run through its code up to the point of making the request. It will then retrieve the mock data and return that as if it had received that data as the response from Onap_appc. It will then translate the data so that the adapter can return the expected response to the rest of the Itential software. Standalone is the default integration test.

Similar to unit testing, there are two ways to run integration tests. Using the testRunner script is better because it prevents you from having to edit the test script; it will also resets information after testing is complete so that credentials are not saved in the file.

node utils/testRunner
  answer no at the first prompt

npm run test:integration

To add new integration tests, edit the test/integration/adapterTestIntegration.js file. The tests that are already in this file should provide guidance for adding additional tests.

Integration Testing

Integration Testing requires connectivity to Onap_appc. By using the testRunner script it prevents you from having to edit the integration test. It also resets the integration test after the test is complete so that credentials are not saved in the file.

Note: These tests have been written as a best effort to make them work in most environments. However, the Adapter Builder often does not have the necessary information that is required to set up valid integration tests. For example, the order of the requests can be very important and data is often required for creates and updates. Hence, integration tests may have to be enhanced before they will work (integrate) with Onap_appc. Even after tests have been set up properly, it is possible there are environmental constraints that could result in test failures. Some examples of possible environmental issues are customizations that have been made within Onap_appc which change order dependencies or required data.

node utils/testRunner
answer yes at the first prompt
answer all other questions on connectivity and credentials

Test should also be written to clean up after themselves. However, it is important to understand that in some cases this may not be possible. In addition, whenever exceptions occur, test execution may be stopped, which will prevent cleanup actions from running. It is recommended that tests be utilized in dev and test labs only.

Reminder: Do not check in code with actual credentials to systems.

Configuration

This section defines all the properties that are available for the adapter, including detailed information on what each property is for. If you are not using certain capabilities with this adapter, you do not need to define all of the properties. An example of how the properties for this adapter can be used with tests or IAP are provided in the sampleProperties.

Example Properties

  "properties": {
    "host": "localhost",
    "port": 443,
    "choosepath": "",
    "base_path": "/",
    "version": "",
    "cache_location": "none",
    "encode_pathvars": true,
    "encode_queryvars": true,
    "save_metric": false,
    "stub": true,
    "protocol": "https",
    "authentication": {
      "auth_method": "basic user_password",
      "username": "username",
      "password": "password",
      "token": "",
      "token_timeout": 1800000,
      "token_cache": "local",
      "invalid_token_error": 401,
      "auth_field": "header.headers.Authorization",
      "auth_field_format": "Basic {b64}{username}:{password}{/b64}",
      "auth_logging": false,
      "client_id": "",
      "client_secret": "",
      "grant_type": "",
      "sensitive": [],
      "sso": {
        "protocol": "",
        "host": "",
        "port": 0
      },
      "multiStepAuthCalls": [
        {
          "name": "",
          "requestFields": {},
          "responseFields": {},
          "successfullResponseCode": 200
        }
      ]
    },
    "healthcheck": {
      "type": "startup",
      "frequency": 300000,
      "query_object": {},
      "addlHeaders": {}
    },
    "throttle": {
      "throttle_enabled": false,
      "number_pronghorns": 1,
      "sync_async": "sync",
      "max_in_queue": 1000,
      "concurrent_max": 1,
      "expire_timeout": 0,
      "avg_runtime": 200,
      "priorities": [
        {
          "value": 0,
          "percent": 100
        }
      ]
    },
    "request": {
      "number_redirects": 0,
      "number_retries": 3,
      "limit_retry_error": 401,
      "failover_codes": [],
      "attempt_timeout": 5000,
      "global_request": {
        "payload": {},
        "uriOptions": {},
        "addlHeaders": {},
        "authData": {}
      },
      "healthcheck_on_timeout": true,
      "return_raw": false,
      "archiving": false,
      "return_request": false
    },
    "proxy": {
      "enabled": false,
      "host": "",
      "port": 1,
      "protocol": "http",
      "username": "",
      "password": ""
    },
    "ssl": {
      "ecdhCurve": "",
      "enabled": false,
      "accept_invalid_cert": true,
      "ca_file": "",
      "key_file": "",
      "cert_file": "",
      "secure_protocol": "",
      "ciphers": ""
    },
    "mongo": {
      "host": "",
      "port": 0,
      "database": "",
      "username": "",
      "password": "",
      "replSet": "",
      "db_ssl": {
        "enabled": false,
        "accept_invalid_cert": false,
        "ca_file": "",
        "key_file": "",
        "cert_file": ""
      }
    },
    "devicebroker": {
      "getDevice": [
        {
          "path": "/get/devices/{id}",
          "method": "GET",
          "query": {},
          "body": {},
          "headers": {},
          "handleFailure": "ignore",
          "requestFields": {
            "id": "name"
          },
          "responseDatakey": "",
          "responseFields": {
            "name": "host",
            "ostype": "os",
            "ostypePrefix": "system-",
            "ipaddress": "attributes.ipaddr",
            "port": "443"
          }
        }
      ],
      "getDevicesFiltered": [
        {
          "path": "/get/devices",
          "method": "GET",
          "pagination": {
            "offsetVar": "",
            "limitVar": "",
            "incrementBy": "limit",
            "requestLocation": "query"
          },
          "query": {},
          "body": {},
          "headers": {},
          "handleFailure": "ignore",
          "requestFields": {},
          "responseDatakey": "",
          "responseFields": {
            "name": "host",
            "ostype": "os",
            "ostypePrefix": "system-",
            "ipaddress": "attributes.ipaddr",
            "port": "443"
          }
        }
      ],
      "isAlive": [
        {
          "path": "/get/devices/{id}/status",
          "method": "GET",
          "query": {},
          "body": {},
          "headers": {},
          "handleFailure": "ignore",
          "requestFields": {
            "id": "name"
          },
          "responseDatakey": "",
          "responseFields": {
            "status": "status",
            "statusValue": "online"
          }
        }
      ],
      "getConfig": [
        {
          "path": "/get/devices/{id}/configPart1",
          "method": "GET",
          "query": {},
          "body": {},
          "headers": {},
          "handleFailure": "ignore",
          "requestFields": {
            "id": "name"
          },
          "responseDatakey": "",
          "responseFields": {}
        }
      ],
      "getCount": [
        {
          "path": "/get/devices",
          "method": "GET",
          "query": {},
          "body": {},
          "headers": {},
          "handleFailure": "ignore",
          "requestFields": {},
          "responseDatakey": "",
          "responseFields": {}
        }
      ]
    },
    "cache": {
      "enabled": false,
      "entities": [
        {
          "entityType": "",
          "frequency": 1440,
          "flushOnFail": false,
          "limit": 1000,
          "retryAttempts": 5,
          "sort": true,
          "populate": [
            {
              "path": "",
              "method": "GET",
              "pagination": {
                "offsetVar": "",
                "limitVar": "",
                "incrementBy": "limit",
                "requestLocation": "query"
              },
              "query": {},
              "body": {},
              "headers": {},
              "handleFailure": "ignore",
              "requestFields": {},
              "responseDatakey": "",
              "responseFields": {}
            }
          ],
          "cachedTasks": [
            {
              "name": "",
              "filterField": "",
              "filterLoc": ""
            }
          ]
        }
      ]
    }
  }

Connection Properties

These base properties are used to connect to Onap_appc upon the adapter initially coming up. It is important to set these properties appropriately.

Property	Description
host	Required. A fully qualified domain name or IP address.
port	Required. Used to connect to the server.
base_path	Optional. Used to define part of a path that is consistent for all or most endpoints. It makes the URIs easier to use and maintain but can be overridden on individual calls. An example **base_path** might be `/rest/api`. Default is ``.
version	Optional. Used to set a global version for action endpoints. This makes it faster to update the adapter when endpoints change. As with the base-path, version can be overridden on individual endpoints. Default is ``.
cache_location	Optional. Used to define where the adapter cache is located. The cache is used to maintain an entity list to improve performance. Storage locally is lost when the adapter is restarted. Storage in Redis is preserved upon adapter restart. Default is none which means no caching of the entity list.
encode_pathvars	Optional. Used to tell the adapter to encode path variables or not. The default behavior is to encode them so this property can be used to stop that behavior.
encode_queryvars	Optional. Used to tell the adapter to encode query parameters or not. The default behavior is to encode them so this property can be used to stop that behavior.
save_metric	Optional. Used to tell the adapter to save metric information (this does not impact metrics returned on calls). This allows the adapter to gather metrics over time. Metric data can be stored in a database or on the file system.
stub	Optional. Indicates whether the stub should run instead of making calls to Onap_appc (very useful during basic testing). Default is false (which means connect to Onap_appc).
protocol	Optional. Notifies the adapter whether to use HTTP or HTTPS. Default is HTTP.

A connectivity check tells IAP the adapter has loaded successfully.

Authentication Properties

The following properties are used to define the authentication process to Onap_appc.

Note: Depending on the method that is used to authenticate with Onap_appc, you may not need to set all of the authentication properties.

Property	Description
auth_method	Required. Used to define the type of authentication currently supported. Authentication methods currently supported are: `basic user_password`, `static_token`, `request_token`, and `no_authentication`.
username	Used to authenticate with Onap_appc on every request or when pulling a token that will be used in subsequent requests.
password	Used to authenticate with Onap_appc on every request or when pulling a token that will be used in subsequent requests.
token	Defines a static token that can be used on all requests. Only used with `static_token` as an authentication method (auth\_method).
invalid_token_error	Defines the HTTP error that is received when the token is invalid. Notifies the adapter to pull a new token and retry the request. Default is 401.
token_timeout	Defines how long a token is valid. Measured in milliseconds. Once a dynamic token is no longer valid, the adapter has to pull a new token. If the token_timeout is set to -1, the adapter will pull a token on every request to Onap_appc. If the timeout_token is 0, the adapter will use the expiration from the token response to determine when the token is no longer valid.
token_cache	Used to determine where the token should be stored (local memory or in Redis).
auth_field	Defines the request field the authentication (e.g., token are basic auth credentials) needs to be placed in order for the calls to work.
auth_field_format	Defines the format of the auth\_field. See examples below. Items enclosed in {} inform the adapter to perofrm an action prior to sending the data. It may be to replace the item with a value or it may be to encode the item.
auth_logging	Setting this true will add some additional logs but this should only be done when trying to debug an issue as certain credential information may be logged out when this is true.
client_id	Provide a client id when needed, this is common on some types of OAuth.
client_secret	Provide a client secret when needed, this is common on some types of OAuth.
grant_type	Provide a grant type when needed, this is common on some types of OAuth.

Examples of authentication field format

"{token}"
"Token {token}"
"{username}:{password}"
"Basic {b64}{username}:{password}{/b64}"

Healthcheck Properties

The healthcheck properties defines the API that runs the healthcheck to tell the adapter that it can reach Onap_appc. There are currently three types of healthchecks.

• None - Not recommended. Adapter will not run a healthcheck. Consequently, unable to determine before making a request if the adapter can reach Onap_appc.
• Startup - Adapter will check for connectivity when the adapter initially comes up, but it will not check afterwards.
• Intermittent - Adapter will check connectivity to Onap_appc at a frequency defined in the frequency property.

Property	Description
type	Required. The type of health check to run.
frequency	Required if intermittent. Defines how often the health check should run. Measured in milliseconds. Default is 300000.
query_object	Query parameters to be added to the adapter healthcheck call.

Request Properties

The request section defines properties to help handle requests.

Property	Description
number_redirects	Optional. Tells the adapter that the request may be redirected and gives it a maximum number of redirects to allow before returning an error. Default is 0 - no redirects.
number_retries	Tells the adapter how many times to retry a request that has either aborted or reached a limit error before giving up and returning an error.
limit_retry_error	Optional. Can be either an integer or an array. Indicates the http error status number to define that no capacity was available and, after waiting a short interval, the adapter can retry the request. If an array is provvided, the array can contain integers or strings. Strings in the array are used to define ranges (e.g. "502-506"). Default is [0].
failover_codes	An array of error codes for which the adapter will send back a failover flag to IAP so that the Platform can attempt the action in another adapter.
attempt_timeout	Optional. Tells how long the adapter should wait before aborting the attempt. On abort, the adapter will do one of two things: 1) return the error; or 2) if **healthcheck\_on\_timeout** is set to true, it will abort the request and run a Healthcheck until it re-establishes connectivity to Onap_appc, and then will re-attempt the request that aborted. Default is 5000 milliseconds.
global_request	Optional. This is information that the adapter can include in all requests to the other system. This is easier to define and maintain than adding this information in either the code (adapter.js) or the action files.
global_request -> payload	Optional. Defines any information that should be included on all requests sent to the other system that have a payload/body.
global_request -> uriOptions	Optional. Defines any information that should be sent as untranslated query options (e.g. page, size) on all requests to the other system.
global_request -> addlHeaders	Optioonal. Defines any headers that should be sent on all requests to the other system.
global_request -> authData	Optional. Defines any additional authentication data used to authentice with the other system. This authData needs to be consistent on every request.
healthcheck_on_timeout	Required. Defines if the adapter should run a health check on timeout. If set to true, the adapter will abort the request and run a health check until it re-establishes connectivity and then it will re-attempt the request.
return_raw	Optional. Tells the adapter whether the raw response should be returned as well as the IAP response. This is helpful when running integration tests to save mock data. It does add overhead to the response object so it is not ideal from production.
archiving	Optional flag. Default is false. It archives the request, the results and the various times (wait time, Onap_appc time and overall time) in the `adapterid_results` collection in MongoDB. Although archiving might be desirable, be sure to develop a strategy before enabling this capability. Consider how much to archive and what strategy to use for cleaning up the collection in the database so that it does not become too large, especially if the responses are large.
return_request	Optional flag. Default is false. Will return the actual request that is made including headers. This should only be used during debugging issues as there could be credentials in the actual request.

SSL Properties

The SSL section defines the properties utilized for ssl authentication with Onap_appc. SSL can work two different ways: set the accept\_invalid\_certs flag to true (only recommended for lab environments), or provide a ca\_file.

Property	Description
enabled	If SSL is required, set to true.
accept_invalid_certs	Defines if the adapter should accept invalid certificates (only recommended for lab environments). Required if SSL is enabled. Default is false.
ca_file	Defines the path name to the CA file used for SSL. If SSL is enabled and the accept invalid certifications is false, then ca_file is required.
key_file	Defines the path name to the Key file used for SSL. The key_file may be needed for some systems but it is not required for SSL.
cert_file	Defines the path name to the Certificate file used for SSL. The cert_file may be needed for some systems but it is not required for SSL.
secure_protocol	Defines the protocol (e.g., SSLv3_method) to use on the SSL request.
ciphers	Required if SSL enabled. Specifies a list of SSL ciphers to use.
ecdhCurve	During testing on some Node 8 environments, you need to set `ecdhCurve` to auto. If you do not, you will receive PROTO errors when attempting the calls. This is the only usage of this property and to our knowledge it only impacts Node 8 and 9.

Throttle Properties

The throttle section is used when requests to Onap_appc must be queued (throttled). All of the properties in this section are optional.

Property	Description
throttle_enabled	Default is false. Defines if the adapter should use throttling or not.
number_pronghorns	Default is 1. Defines if throttling is done in a single Itential instance or whether requests are being throttled across multiple Itential instances (minimum = 1, maximum = 20). Throttling in a single Itential instance uses an in-memory queue so there is less overhead. Throttling across multiple Itential instances requires placing the request and queue information into a shared resource (e.g. database) so that each instance can determine what is running and what is next to run. Throttling across multiple instances requires additional I/O overhead.
sync-async	This property is not used at the current time (it is for future expansion of the throttling engine).
max_in_queue	Represents the maximum number of requests the adapter should allow into the queue before rejecting requests (minimum = 1, maximum = 5000). This is not a limit on what the adapter can handle but more about timely responses to requests. The default is currently 1000.
concurrent_max	Defines the number of requests the adapter can send to Onap_appc at one time (minimum = 1, maximum = 1000). The default is 1 meaning each request must be sent to Onap_appc in a serial manner.
expire_timeout	Default is 0. Defines a graceful timeout of the request session. After a request has completed, the adapter will wait additional time prior to sending the next request. Measured in milliseconds (minimum = 0, maximum = 60000).
average_runtime	Represents the approximate average of how long it takes Onap_appc to handle each request. Measured in milliseconds (minimum = 50, maximum = 60000). Default is 200. This metric has performance implications. If the runtime number is set too low, it puts extra burden on the CPU and memory as the requests will continually try to run. If the runtime number is set too high, requests may wait longer than they need to before running. The number does not need to be exact but your throttling strategy depends heavily on this number being within reason. If averages range from 50 to 250 milliseconds you might pick an average run-time somewhere in the middle so that when Onap_appc performance is exceptional you might run a little slower than you might like, but when it is poor you still run efficiently.
priorities	An array of priorities and how to handle them in relation to the throttle queue. Array of objects that include priority value and percent of queue to put the item ex { value: 1, percent: 10 }

Proxy Properties

The proxy section defines the properties to utilize when Onap_appc is behind a proxy server.

Property	Description
enabled	Required. Default is false. If Onap_appc is behind a proxy server, set enabled flag to true.
host	Host information for the proxy server. Required if `enabled` is true.
port	Port information for the proxy server. Required if `enabled` is true.
protocol	The protocol (i.e., http, https, etc.) used to connect to the proxy. Default is http.
username	If there is authentication for the proxy, provide the username here.
password	If there is authentication for the proxy, provide the password here.

Mongo Properties

The mongo section defines the properties used to connect to a Mongo database. Mongo can be used for throttling as well as to persist metric data. If not provided, metrics will be stored in the file system.

Property	Description
host	Optional. Host information for the mongo server.
port	Optional. Port information for the mongo server.
database	Optional. The database for the adapter to use for its data.
username	Optional. If credentials are required to access mongo, this is the user to login as.
password	Optional. If credentials are required to access mongo, this is the password to login with.
replSet	Optional. If the database is set up to use replica sets, define it here so it can be added to the database connection.
db_ssl	Optional. Contains information for SSL connectivity to the database.
db_ssl -> enabled	If SSL is required, set to true.
db_ssl -> accept_invalid_cert	Defines if the adapter should accept invalid certificates (only recommended for lab environments). Required if SSL is enabled. Default is false.
db_ssl -> ca_file	Defines the path name to the CA file used for SSL. If SSL is enabled and the accept invalid certifications is false, then ca_file is required.
db_ssl -> key_file	Defines the path name to the Key file used for SSL. The key_file may be needed for some systems but it is not required for SSL.
db_ssl -> cert_file	Defines the path name to the Certificate file used for SSL. The cert_file may be needed for some systems but it is not required for SSL.

Device Broker Properties

The device broker section defines the properties used integrate Onap_appc to the device broker. Each broker call is represented and has an array of calls that can be used to build the response. This describes the calls and then the fields which are available in the calls.

Property	Description
getDevice	The array of calls used to get device details for the broker
getDevicesFiltered	The array of calls used to get devices for the broker
isAlive	The array of calls used to get device status for the broker
getConfig	The array of calls used to get device configuration for the broker
getCount	The array of calls used to get device configuration for the broker
getDevice/getDevicesFiltered/isAlive/getConfig/getCount -> path	The path, not including the base_path and version, for making this call
getDevice/getDevicesFiltered/isAlive/getConfig/getCount -> method	The rest method for making this call
getDevice/getDevicesFiltered/isAlive/getConfig/getCount -> query	Query object containing and query parameters and their values for this call
getDevice/getDevicesFiltered/isAlive/getConfig/getCount -> body	Body object containing the payload for this call
getDevice/getDevicesFiltered/isAlive/getConfig/getCount -> headers	Header object containing the headers for this call.
getDevice/getDevicesFiltered/isAlive/getConfig/getCount -> handleFailure	Tells the adapter whether to "fail" or "ignore" failures if they occur.
isAlive -> statusValue	Tells the adapter what value to look for in the status field to determine if the device is alive.
getDevice/getDevicesFiltered/isAlive/getConfig -> requestFields	Object containing fields the adapter should send on the request and where it should get the data. The where can be from a response to a getDevicesFiltered or a static value.
getDevice/getDevicesFiltered/isAlive/getConfig -> responseFields	Object containing fields the adapter should set to send back to iap and where the value should come from in the response or request data.

Using this Adapter

The adapter.js file contains the calls the adapter makes available to the rest of the Itential Platform. The API detailed for these calls should be available through JSDOC. The following is a brief summary of the calls.

Generic Adapter Calls

These are adapter methods that IAP or you might use. There are some other methods not shown here that might be used for internal adapter functionality.

Method Signature	Description	Workflow?
connect()	This call is run when the Adapter is first loaded by he Itential Platform. It validates the properties have been provided correctly.	No
healthCheck(callback)	This call ensures that the adapter can communicate with Adapter for ONAP Application Controller. The actual call that is used is defined in the adapter properties and .system entities action.json file.	No
refreshProperties(properties)	This call provides the adapter the ability to accept property changes without having to restart the adapter.	No
encryptProperty(property, technique, callback)	This call will take the provided property and technique, and return the property encrypted with the technique. This allows the property to be used in the adapterProps section for the credential password so that the password does not have to be in clear text. The adapter will decrypt the property as needed for communications with Adapter for ONAP Application Controller.	No
iapUpdateAdapterConfiguration(configFile, changes, entity, type, action, callback)	This call provides the ability to update the adapter configuration from IAP - includes actions, schema, mockdata and other configurations.	Yes
iapSuspendAdapter(mode, callback)	This call provides the ability to suspend the adapter and either have requests rejected or put into a queue to be processed after the adapter is resumed.	Yes
iapUnsuspendAdapter(callback)	This call provides the ability to resume a suspended adapter. Any requests in queue will be processed before new requests.	Yes
iapGetAdapterQueue(callback)	This call will return the requests that are waiting in the queue if throttling is enabled.	Yes
iapFindAdapterPath(apiPath, callback)	This call provides the ability to see if a particular API path is supported by the adapter.	Yes
iapTroubleshootAdapter(props, persistFlag, adapter, callback)	This call can be used to check on the performance of the adapter - it checks connectivity, healthcheck and basic get calls.	Yes
iapRunAdapterHealthcheck(adapter, callback)	This call will return the results of a healthcheck.	Yes
iapRunAdapterConnectivity(callback)	This call will return the results of a connectivity check.	Yes
iapRunAdapterBasicGet(callback)	This call will return the results of running basic get API calls.	Yes
iapMoveAdapterEntitiesToDB(callback)	This call will push the adapter configuration from the entities directory into the Adapter or IAP Database.	Yes
iapDeactivateTasks(tasks, callback)	This call provides the ability to remove tasks from the adapter.	Yes
iapActivateTasks(tasks, callback)	This call provides the ability to add deactivated tasks back into the adapter.	Yes
iapExpandedGenericAdapterRequest(metadata, uriPath, restMethod, pathVars, queryData, requestBody, addlHeaders, callback)	This is an expanded Generic Call. The metadata object allows us to provide many new capabilities within the generic request.	Yes
genericAdapterRequest(uriPath, restMethod, queryData, requestBody, addlHeaders, callback)	This call allows you to provide the path to have the adapter call. It is an easy way to incorporate paths that have not been built into the adapter yet.	Yes
genericAdapterRequestNoBasePath(uriPath, restMethod, queryData, requestBody, addlHeaders, callback)	This call is the same as the genericAdapterRequest only it does not add a base_path or version to the call.	Yes
iapRunAdapterLint(callback)	Runs lint on the addapter and provides the information back.	Yes
iapRunAdapterTests(callback)	Runs baseunit and unit tests on the adapter and provides the information back.	Yes
iapGetAdapterInventory(callback)	This call provides some inventory related information about the adapter.	Yes

Adapter Cache Calls

These are adapter methods that are used for adapter caching. If configured, the adapter will cache based on the interval provided. However, you can force a population of the cache manually as well.

Method Signature	Description	Workflow?
iapPopulateEntityCache(entityTypes, callback)	This call populates the adapter cache.	Yes
iapRetrieveEntitiesCache(entityType, options, callback)	This call retrieves the specific items from the adapter cache.	Yes

Adapter Broker Calls

These are adapter methods that are used to integrate to IAP Brokers. This adapter currently supports the following broker calls.

Method Signature	Description	Workflow?
hasEntities(entityType, entityList, callback)	This call is utilized by the IAP Device Broker to determine if the adapter has a specific entity and item of the entity.	No
getDevice(deviceName, callback)	This call returns the details of the requested device.	No
getDevicesFiltered(options, callback)	This call returns the list of devices that match the criteria provided in the options filter.	No
isAlive(deviceName, callback)	This call returns whether the device status is active	No
getConfig(deviceName, format, callback)	This call returns the configuration for the selected device.	No
iapGetDeviceCount(callback)	This call returns the count of devices.	No

Specific Adapter Calls

Specific adapter calls are built based on the API of the ONAP Application Controller. The Adapter Builder creates the proper method comments for generating JS-DOC for the adapter. This is the best way to get information on the calls.

Method Signature	Description	Path	Workflow?
healthCheckAppc(body, callback)		{base_path}/{version}/restconf/operations/appc-provider-lcm:health-check?{query}	Yes
configModify(body, callback)		{base_path}/{version}/restconf/operations/appc-provider-lcm:config-modify?{query}	Yes
configure(body, callback)		{base_path}/{version}/restconf/operations/appc-provider-lcm:configure?{query}	Yes
configScaleOut(body, callback)		{base_path}/{version}/restconf/operations/appc-provider-lcm:config-scale-out?{query}	Yes
actionStatus(body, callback)	The ActionStatus command returns that state of any action request that has been previously submitted to an APPC instance for a specified VNF. This enables the client to know the status of a previous request and helps them decide if they should reissue a request.	{base_path}/{version}/restconf/operations/appc-provider-lcm:action-status?{query}	Yes
attachVolume(body, callback)	The AttachVolume command attaches a cinder volume to a VM via an Openstack command. Cinder is a Block Storage service for OpenStack. It’s designed to present storage resources to end users that can be consumed by the OpenStack Compute Project (Nova). The short description of Cinder is that it virtualizes the management of block storage devices and provides end users with a self service API to request and consume those resources without requiring any knowledge of where their storage is actually d...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:attach-volume?{query}	Yes
audit(body, callback)	The Audit command compares the configuration of the VNF associated with the current request against the most recent configuration that is stored in APPC’s configuration database. A successful Audit means that the current VNF configuration matches the latest APPC stored configuration. A failed Audit indicates that the configurations do not match. This command can be applied to any VNF type. The only restriction is that the VNF has been onboarded in self-service mode (which requires that the VNF s...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:audit?{query}	Yes
checkLock(body, callback)	The CheckLock command returns true if the specified VNF is locked; otherwise, false is returned. A CheckLock command is deemed successful if the processing completes without error, whether the VNF is locked or not. The command returns only a single response with a final status. Note that APPC locks the target VNF during any VNF command processing, so a VNF can have a locked status even if no Lock command has been explicitly called. The CheckLock command returns a specific response structure that...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:checklock?{query}	Yes
configBackup(body, callback)	Stores the current VNF configuration on a local file system (not in APPC). This is limited to Ansible and Chef. There can only be one stored configuration (if there is a previously saved configuration, it is replaced with the current VNF configuration). A successful ConfigBackup request returns a success response. A failed ConfigBackup action returns a failure response code and the specific failure message in the response block.	{base_path}/{version}/restconf/operations/appc-provider-lcm:config-backup?{query}	Yes
configRestore(body, callback)	Applies a previously saved configuration to the active VNF configuration. This is limited to Ansible and Chef. There can only be one stored configuration. A successful ConfigRestore request returns a success response. A failed ConfigRestore action returns a failure response code and the specific failure message in the response block.	{base_path}/{version}/restconf/operations/appc-provider-lcm:config-restore?{query}	Yes
detachVolume(body, callback)	The DetachVolume command detaches a cinder volume from a VM via an Openstack command. Cinder is a Block Storage service for OpenStack. It’s designed to present storage resources to end users that can be consumed by the OpenStack Compute Project (Nova). The short description of Cinder is that it virtualizes the management of block storage devices and provides end users with a self-service API to request and consume those resources without requiring any knowledge of where their storage is actually...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:detach-volume?{query}	Yes
evacuate(body, callback)	Evacuates a specified VM from its current host to another. After a successful evacuate, a rebuild VM is performed if a snapshot is available (and the VM boots from a snapshot). The host on which the VM resides needs to be down. If the target host is not specified in the request, it will be selected by relying on internal rules to evacuate. The Evacuate action will fail if the specified target host is not UP/ENABLED. After Evacuate, the rebuild VM can be disabled by setting the optional rebuild-v...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:evacuate?{query}	Yes
lock(body, callback)	Use the Lock command to ensure exclusive access during a series of critical LCM commands. The Lock action will return a successful result if the VNF is not already locked or if it was locked with the same request-id, otherwise the action returns a response with a reject status code. Lock is a command intended for APPC and does not execute an actual VNF command. Instead, lock will ensure that ONAP is granted exclusive access to the VNF. When a VNF is locked, any subsequent sequential commands wit...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:lock?{query}	Yes
migrate(body, callback)	Migrates a running target VM from its current host to another. A destination node will be selected by relying on internal rules to migrate. Migrate calls a command in order to perform the operation. Migrate suspends the guest virtual machine, and moves an image of the guest virtual machine’s disk to the destination host physical machine. The guest virtual machine is then resumed on the destination host physical machine and the disk storage that it used on the source host physical machine is free...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:migrate?{query}	Yes
quiesceTraffic(body, callback)	The QuiesceTraffic LCM action gracefully stops the traffic on the VNF (i.e., no service interruption for traffic in progress). All application processes are assumed to be running but no traffic is being processed. This command is executed using an Ansible playbook or Chef cookbook.	{base_path}/{version}/restconf/operations/appc-provider-lcm:quiesce-traffic?{query}	Yes
reboot(body, callback)	The Reboot is used to reboot a VM. There are two types supported: HARD and SOFT. A SOFT reboot attempts a graceful shutdown and restart of the server. A HARD reboot attempts a forced shutdown and restart of the server. The HARD reboot corresponds to the power cycles of the server. NOTE: The command implementation is based on OpenStack functionality. For further details, see http://developer.openstack.org/api-ref/compute/.	{base_path}/{version}/restconf/operations/appc-provider-lcm:reboot?{query}	Yes
rebuild(body, callback)	Recreates a target VM instance to a known, stable state. Rebuild calls an OpenStack command immediately and therefore does not expect any prerequisite operations to be performed, such as shutting off a VM. Rebuild VM uses the snapshot provided by the snapshot-id (if provided). If not provided, the latest snapshot is used. If there are no snapshots, it uses the (original) Glance image. APPC rejects a rebuild request if it determines the VM boots from a Cinder Volume NOTE: The command implementati...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:rebuild?{query}	Yes
restart(body, callback)	Use the Restart command to restart a VM.	{base_path}/{version}/restconf/operations/appc-provider-lcm:restart?{query}	Yes
resumeTraffic(body, callback)	The ResumeTraffic LCM action resumes processing traffic on a VNF that has been previously quiesced. This command is executed using an Ansible playbook or Chef cookbook. Request Structure: The payload does not have any parameters.	{base_path}/{version}/restconf/operations/appc-provider-lcm:resume-traffic?{query}	Yes
snapshot(body, callback)	Creates a snapshot of a VM. The Snapshot command returns a customized response containing a reference to the newly created snapshot instance if the action is successful. This command can be applied to a VM in any VNF type. The only restriction is that the particular VNF should be built based on the generic heat stack. Note: Snapshot is not reliable unless the VM is in a stopped, paused, or quiesced (no traffic being processed) status. It is up to the caller to ensure that the VM is in one of the...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:snapshot?{query}	Yes
start(body, callback)	Use the Start command to start a VM that is stopped. NOTE: The command implementation is based on Openstack functionality. For further details, see http://developer.openstack.org/api-ref/compute/.	{base_path}/{version}/restconf/operations/appc-provider-lcm:start?{query}	Yes
startApplication(body, callback)	Starts the VNF application, if needed, after a VM is instantiated/configured or after VM start or restart. Supported using Chef cookbook or Ansible playbook only. A successful StartApplication request returns a success response. A failed StartApplication action returns a failure response code and the specific failure message in the response block.	{base_path}/{version}/restconf/operations/appc-provider-lcm:start-application?{query}	Yes
stop(body, callback)	Use the Stop command to stop a VM that was running.	{base_path}/{version}/restconf/operations/appc-provider-lcm:stop?{query}	Yes
stopApplication(body, callback)	Stops the VNF application gracefully (not lost traffic), if needed, prior to a Stop command. Supported using Chef cookbook or Ansible playbook only. A successful StopApplication request returns a success response. A failed StopApplication action returns a failure response code and the specific failure message in the response block.	{base_path}/{version}/restconf/operations/appc-provider-lcm:stop-application?{query}	Yes
sync(body, callback)	The Sync action updates the current configuration in the APPC store with the running configuration from the device. A successful Sync returns a success status. A failed Sync returns a failure response status and failure messages in the response payload block. This command can be applied to any VNF type. The only restriction is that the VNF has been onboarded in self-service mode (which requires that the VNF supports a request to return the running configuration).	{base_path}/{version}/restconf/operations/appc-provider-lcm:sync?{query}	Yes
unlock(body, callback)	Run the Unlock command to release the lock on a VNF and allow other clients to perform LCM commands on that VNF. Unlock is a command intended for APPC and does not execute an actual VNF command. Instead, unlock will release the VNF from the exclusive access held by the specific request-id allowing other requests for the VNF to be accepted. The Unlock command will result in success if the VNF successfully unlocked or if it was already unlocked, otherwise commands will be rejected. The Unlock comm...(description truncated)	{base_path}/{version}/restconf/operations/appc-provider-lcm:unlock?{query}	Yes
upgradeBackout(body, callback)	The Sync action updates the current configuration in the APPC store with the running configuration from the device. A successful Sync returns a success status. A failed Sync returns a failure response status and failure messages in the response payload block. This command can be applied to any VNF type. The only restriction is that the VNF has been onboarded in self-service mode (which requires that the VNF supports a request to return the running configuration).	{base_path}/{version}/restconf/operations/appc-provider-lcm:upgrade-backout?{query}	Yes
upgradeBackup(body, callback)	The UpgradeBackup LCM action does a full backup of the VNF data prior to an upgrade. The backup is done on the Ansible or Chef server in a location that is specified in the playbook or cookbook. If there is an existing backup, it is overwritten by the new backup. This command is executed using an Ansible playbook or Chef cookbook. Request Structure: The payload does not have any parameters required.	{base_path}/{version}/restconf/operations/appc-provider-lcm:upgrade-backup?{query}	Yes
upgradePostCheck(body, callback)	Success: If the UpgradePostCheck run successfully, it returns a success status code 400. The response payload contains the results of the check (Completed or Failed).	{base_path}/{version}/restconf/operations/appc-provider-lcm:upgrade-post-check?{query}	Yes
upgradePreCheck(body, callback)	The UpgradePreCheck LCM action checks that the VNF has the correct software version needed for a software upgrade. This command can be executed on a running VNF (i.e. processing traffic). This command is executed using an Ansible playbook or Chef cookbook.	{base_path}/{version}/restconf/operations/appc-provider-lcm:upgrade-pre-check?{query}	Yes
upgradeSoftware(body, callback)	The UpgradePreCheck LCM action checks that the VNF has the correct software version needed for a software upgrade. This command can be executed on a running VNF (i.e. processing traffic). This command is executed using an Ansible playbook or Chef cookbook.	{base_path}/{version}/restconf/operations/appc-provider-lcm:upgrade-software?{query}	Yes

Authentication

This document will go through the steps for authenticating the ONAP Application Controller adapter with Basic Authentication. Properly configuring the properties for an adapter in IAP is critical for getting the adapter online. You can read more about adapter authentication HERE.

Basic Authentication

The ONAP Application Controller adapter requires Basic Authentication. If you change authentication methods, you should change this section accordingly and merge it back into the adapter repository.

STEPS

1. Ensure you have access to a ONAP Application Controller server and that it is running

2. Follow the steps in the README.md to import the adapter into IAP if you have not already done so

3. Use the properties below for the properties.authentication field

   "authentication": {
   "auth_method": "basic user_password",
   "username": "<username>",
   "password": "<password>",
   "auth_field": "header.headers.Authorization",
   "auth_field_format": "Basic {b64}{username}:{password}{/b64}",
   "auth_logging": false
   }

   you can leave all of the other properties in the authentication section, they will not be used when the auth_method is basic user_password.

4. Restart the adapter. If your properties were set correctly, the adapter should go online.

Troubleshooting

• Make sure you copied over the correct username and password.
• Turn on debug level logs for the adapter in IAP Admin Essentials.
• Turn on auth_logging for the adapter in IAP Admin Essentials (adapter properties).
• Investigate the logs - in particular:
  • The FULL REQUEST log to make sure the proper headers are being sent with the request.
  • The FULL BODY log to make sure the payload is accurate.
  • The CALL RETURN log to see what the other system is telling us.
• Credentials should be masked by the adapter so make sure you verify the username and password - including that there are erroneous spaces at the front or end.
• Remember when you are done to turn auth_logging off as you do not want to log credentials.

Additional Information

Enhancements

Adding a Second Instance of an Adapter

You can add a second instance of this adapter without adding new code on the file system. To do this go into the IAP Admin Essentials and add a new service config for this adapter. The two instances of the adapter should have unique ids. In addition, they should point to different instances (unique host and port) of the other system.

Adding Adapter Calls

There are multiple ways to add calls to an existing adapter.

The easiest way would be to use the Adapter Builder update process. This process takes in a Swagger or OpenAPI document, allows you to select the calls you want to add and then generates a zip file that can be used to update the adapter. Once you have the zip file simply put it in the adapter directory and execute npm run adapter:update.

mv updatePackage.zip adapter-onap_appc
cd adapter-onap_appc
npm run adapter:update

If you do not have a Swagger or OpenAPI document, you can use a Postman Collection and convert that to an OpenAPI document using APIMatic and then follow the first process.

If you want to manually update the adapter that can also be done the key thing is to make sure you update all of the right files. Within the entities directory you will find 1 or more entities. You can create a new entity or add to an existing entity. Each entity has an action.json file, any new call will need to be put in the action.json file. It will also need to be added to the enum for the ph_request_type in the appropriate schema files. Once this configuration is complete you will need to add the call to the adapter.js file and, in order to make it available as a workflow task in IAP, it should also be added to the pronghorn.json file. You can optionally add it to the unit and integration test files. There is more information on how to work on each of these files in the Adapter Technical Resources on our Documentation Site.

Files to update
* entities/<entity>/action.json: add an action
* entities/<entity>/schema.json (or the schema defined on the action): add action to the enum for ph_request_type
* adapter.js: add the new method and make sure it calls the proper entity and action
* pronghorn.json: add the new method
* test/unit/adapterTestUnit.js (optional but best practice): add unit test(s) - function is there, any required parameters error when not passed in
* test/integration/adapterTestIntegration.js (optional but best practice): add integration test

Adding Adapter Properties

While changing adapter properties is done in the service instance configuration section of IAP, adding properties has to be done in the adapter. To add a property you should edit the propertiesSchema.json with the proper information for the property. In addition, you should modify the sampleProperties to have the new property in it.

Files to update
* propertiesSchema.json: add the new property and how it is defined
* sampleProperties: add the new property with a default value
* test/unit/adapterTestUnit.js (optional but best practice): add the property to the global properties
* test/integration/adapterTestIntegration.js (optional but best practice): add the property to the global properties

Changing Adapter Authentication

Often an adapter is built before knowing the authentication and authentication processes can also change over time. The adapter supports many different kinds of authentication but it does require configuration. Some forms of authentication can be defined entirely with the adapter properties but others require configuration.

Files to update
* entities/.system/action.json: change the getToken action as needed
* entities/.system/schemaTokenReq.json: add input parameters (external name is name in other system)
* entities/.system/schemaTokenResp.json: add response parameters (external name is name in other system)
* propertiesSchema.json: add any new property and how it is defined
* sampleProperties: add any new property with a default value
* test/unit/adapterTestUnit.js (optional but best practice): add the property to the global properties
* test/integration/adapterTestIntegration.js (optional but best practice): add the property to the global properties

Enhancing Adapter Integration Tests

The adapter integration tests are written to be able to test in either stub (standalone) mode or integrated to the other system. However, if integrating to the other system, you may need to provide better data than what the adapter provides by default as that data is likely to fail for create and update. To provide better data, edit the adapter integration test file. Make sure you do not remove the marker and keep custom code below the marker so you do not impact future migrations. Once the edits are complete, run the integration test as it instructs you to above. When you run integrated to the other system, you can also save mockdata for future use by changing the isSaveMockData flag to true.

Files to update
* test/integration/adapterTestIntegration.js: add better data for the create and update calls so that they will not fail.

As mentioned previously, for most of these changes as well as other possible changes, there is more information on how to work on an adapter in the Adapter Technical Resources on our Documentation Site.

Contributing

First off, thanks for taking the time to contribute!

The following is a set of rules for contributing.

Code of Conduct

This project and everyone participating in it is governed by the Code of Conduct. By participating, you are expected to uphold this code. Please report unacceptable behavior to support@itential.com.

How to Contribute

Follow the contributing guide (here)[https://gitlab.com/itentialopensource/adapters/contributing-guide]

Helpful Links

Adapter Technical Resources

Node Scripts

There are several node scripts that now accompany the adapter. These scripts are provided to make several activities easier. Many of these scripts can have issues with different versions of IAP as they have dependencies on IAP and Mongo. If you have issues with the scripts please report them to the Itential Adapter Team. Each of these scripts are described below.

Run	Description
npm run adapter:install	Provides an easier way to install the adapter.
npm run adapter:checkMigrate	Checks whether your adapter can and should be migrated to the latest foundation.
npm run adapter:findPath	Can be used to see if the adapter supports a particular API call.
npm run adapter:migrate	Provides an easier way to update your adapter after you download the migration zip from Itential DevSite.
npm run adapter:update	Provides an easier way to update your adapter after you download the update zip from Itential DevSite.
npm run adapter:revert	Allows you to revert after a migration or update if it resulted in issues.
npm run troubleshoot	Provides a way to troubleshoot the adapter - runs connectivity, healthcheck and basic get.
npm run connectivity	Provides a connectivity check to the Servicenow system.
npm run healthcheck	Checks whether the configured healthcheck call works to Servicenow.
npm run basicget	Checks whether the basic get calls works to Servicenow.

Troubleshoot

Run npm run troubleshoot to start the interactive troubleshooting process. The command allows you to verify and update connection, authentication as well as healthcheck configuration. After that it will test these properties by sending HTTP request to the endpoint. If the tests pass, it will persist these changes into IAP.

You also have the option to run individual commands to perform specific test:

• npm run healthcheck will perform a healthcheck request of with current setting.
• npm run basicget will perform some non-parameter GET request with current setting.
• npm run connectivity will perform networking diagnostics of the adatper endpoint.

Connectivity Issues

1. You can run the adapter troubleshooting script which will check connectivity, run the healthcheck and run basic get calls.

npm run troubleshoot

2. Verify the adapter properties are set up correctly.

Go into the Itential Platform GUI and verify/update the properties

3. Verify there is connectivity between the Itential Platform Server and Onap_appc Server.

ping the ip address of Onap_appc server
try telnet to the ip address port of Onap_appc
execute a curl command to the other system

4. Verify the credentials provided for Onap_appc.

login to Onap_appc using the provided credentials

5. Verify the API of the call utilized for Onap_appc Healthcheck.

Go into the Itential Platform GUI and verify/update the properties

Functional Issues

Adapter logs are located in /var/log/pronghorn. In older releases of the Itential Platform, there is a pronghorn.log file which contains logs for all of the Itential Platform. In newer versions, adapters can be configured to log into their own files.