Package org.odpi.openmetadata.adapters.connectors.integration.openapis

Class RESTClient

java.lang.Object

org.odpi.openmetadata.adapters.connectors.integration.openapis.RESTClient

public class RESTClient
extends Object

RESTClient is responsible for issuing calls to the OMAS REST APIs.

Field Summary

Fields

Modifier and Type	Field	Description
protected AuditLog	auditLog
protected String	serverName
protected String	url

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	RESTClient(String serverName, String url, String userId, String password, AuditLog auditLog)	Constructor for simple userId and password authentication with audit log.
protected	RESTClient(String serverName, String url, AuditLog auditLog)	Constructor for no authentication with audit log.

Method Summary

Modifier and Type	Method	Description
protected <T> T	callDeleteRESTCall(String methodName, Class<T> returnClass, String urlTemplate, Object... params)	Issue a Delete REST call that returns a response object.
protected <T> T	callDeleteRESTCall(String methodName, org.springframework.core.ParameterizedTypeReference<T> responseType, String urlTemplate, Object... params)	Issue a Delete REST call that returns a response object.
protected <T> T	callGetRESTCall(String methodName, Class<T> returnClass, String urlTemplate, Object... params)	Issue a GET REST call that returns a response object.
protected <T> T	callGetRESTCall(String methodName, org.springframework.core.ParameterizedTypeReference<T> responseType, String urlTemplate, Object... params)	Issue a GET REST call that returns a response object.
protected <T> T	callGetRESTCallNoParams(String methodName, Class<T> returnClass, String urlTemplate)	Issue a GET REST call that returns a response object.
protected <T> T	callPostRESTCall(String methodName, Class<T> returnClass, String urlTemplate, Object requestBody, Object... params)	Issue a POST REST call that returns a response object.
protected <T> T	callPostRESTCall(String methodName, org.springframework.core.ParameterizedTypeReference<T> responseType, String urlTemplate, Object requestBody, Object... params)	Issue a POST REST call that returns a response object.
protected <T> T	callPostRESTCallNoParams(String methodName, Class<T> returnClass, String urlTemplate, Object requestBody)	Issue a POST REST call that returns a response object.
protected <T> T	callPutRESTCall(String methodName, Class<T> returnClass, String urlTemplate, Object requestBody, Object... params)	Issue a PUT REST call that returns a response object.
protected <T> T	callPutRESTCall(String methodName, org.springframework.core.ParameterizedTypeReference<T> responseType, String urlTemplate, Object requestBody, Object... params)	Issue a PUT REST call that returns a response object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

serverName

protected String serverName

url

protected String url

auditLog

protected AuditLog auditLog

Constructor Details

RESTClient

protected RESTClient(String serverName,
 String url,
 AuditLog auditLog)
              throws InvalidParameterException

Constructor for no authentication with audit log.

Parameters:

serverName - name of the OMAG Server to call

url - URL root of the server platform where the OMAG Server is running.

auditLog - destination for log messages.

Throws:

InvalidParameterException - there is a problem creating the client-side components to issue any REST API calls.

RESTClient

protected RESTClient(String serverName,
 String url,
 String userId,
 String password,
 AuditLog auditLog)
              throws InvalidParameterException

Constructor for simple userId and password authentication with audit log.

Parameters:

serverName - name of the OMAG Server to call

url - URL root of the server platform where the OMAG Server is running.

userId - user id for the HTTP request

password - password for the HTTP request

auditLog - destination for log messages.

Throws:

InvalidParameterException - there is a problem creating the client-side components to issue any REST API calls.

Method Details

callGetRESTCallNoParams

protected <T> T callGetRESTCallNoParams(String methodName,
 Class<T> returnClass,
 String urlTemplate)
                                 throws PropertyServerException

Issue a GET REST call that returns a response object.

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

returnClass - class of the response object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callGetRESTCall

protected <T> T callGetRESTCall(String methodName,
 Class<T> returnClass,
 String urlTemplate,
 Object... params)
                         throws PropertyServerException

Issue a GET REST call that returns a response object.

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

returnClass - class of the response object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

params - a list of parameters that are slotted into the url template.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callGetRESTCall

protected <T> T callGetRESTCall(String methodName,
 org.springframework.core.ParameterizedTypeReference<T> responseType,
 String urlTemplate,
 Object... params)
                         throws PropertyServerException

Issue a GET REST call that returns a response object. It's working only with SpringRESTClientConnector

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

responseType - class of the response object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

params - a list of parameters that are slotted into the url template.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callPostRESTCallNoParams

protected <T> T callPostRESTCallNoParams(String methodName,
 Class<T> returnClass,
 String urlTemplate,
 Object requestBody)
                                  throws PropertyServerException

Issue a POST REST call that returns a response object. This is typically a create, update, or find with complex parameters.

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

returnClass - class of the response object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

requestBody - request body for the request.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callPostRESTCall

protected <T> T callPostRESTCall(String methodName,
 Class<T> returnClass,
 String urlTemplate,
 Object requestBody,
 Object... params)
                          throws PropertyServerException

Issue a POST REST call that returns a response object. This is typically a create, update, or find with complex parameters.

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

returnClass - class of the response object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

requestBody - request body for the request.

params - a list of parameters that are slotted into the url template.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callPostRESTCall

protected <T> T callPostRESTCall(String methodName,
 org.springframework.core.ParameterizedTypeReference<T> responseType,
 String urlTemplate,
 Object requestBody,
 Object... params)
                          throws PropertyServerException

Issue a POST REST call that returns a response object. This is typically a create, update, or find with complex parameters. It's working only with SpringRESTClientConnector

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

responseType - class of the response for generic object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

requestBody - request body for the request.

params - a list of parameters that are slotted into the url template.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callPutRESTCall

protected <T> T callPutRESTCall(String methodName,
 Class<T> returnClass,
 String urlTemplate,
 Object requestBody,
 Object... params)
                         throws PropertyServerException

Issue a PUT REST call that returns a response object. This is typically an update.

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

returnClass - class of the response object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

requestBody - request body for the request.

params - a list of parameters that are slotted into the url template.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callPutRESTCall

protected <T> T callPutRESTCall(String methodName,
 org.springframework.core.ParameterizedTypeReference<T> responseType,
 String urlTemplate,
 Object requestBody,
 Object... params)
                         throws PropertyServerException

Issue a PUT REST call that returns a response object. This is typically an update. It's working only with SpringRESTClientConnector

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

responseType - class of the response for generic object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

requestBody - request body for the request.

params - a list of parameters that are slotted into the url template.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callDeleteRESTCall

protected <T> T callDeleteRESTCall(String methodName,
 Class<T> returnClass,
 String urlTemplate,
 Object... params)
                            throws PropertyServerException

Issue a Delete REST call that returns a response object.

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

returnClass - class of the response object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

params - a list of parameters that are slotted into the url template.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.

callDeleteRESTCall

protected <T> T callDeleteRESTCall(String methodName,
 org.springframework.core.ParameterizedTypeReference<T> responseType,
 String urlTemplate,
 Object... params)
                            throws PropertyServerException

Issue a Delete REST call that returns a response object.

Type Parameters:

T - return type

Parameters:

methodName - name of the method being called.

responseType - class of the response for generic object.

urlTemplate - template of the URL for the REST API call with place-holders for the parameters.

params - a list of parameters that are slotted into the url template.

Returns:

response object

Throws:

PropertyServerException - something went wrong with the REST call stack.