# Overview
This component contains a number of general Apache Camel components which are intended for use by the data-router.

# Maven Dependency
To make use of the Camel components included in this repository, include the following artifact in your dependencies list:

    <dependency>
        <groupId>org.openecomp</groupId>
        <artifactId>router-core</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </dependency>
  
# How to Build:

    > mvn clean install
    

## Rest Client Component

The REST client component provides a simple endpoint for sending HTTP requests to a REST endpoint.

### URI Format
    ecomp-rest:op[?options]
    
Where,

op = One of GET, PUT, POST, or DELETE
    
### URI Options
The following option parameters must be passed in to the component for HTTPS communications:

| Parameter | Description |
| --------- | ----------- |
| ecomp-client-cert | Fully qualified path to the client certificate to use for HTTPS communications. |
| ecomp-keystore | Fully qualified path to the keystore file to use for HTTP communications. |
| ecomp-keystore-password | Obfuscated password for the keystore. |

### IN Message

#### Ecomp-Rest Header Parameters
| Header Name | Description |
| ----------- | ----------- |
| ecomp-url | The fully qualified URL for the HTTP request to be send.  This is mandatory. |

#### HTTP Header Parameters
The following parameters, if they are present in the Exchange In Message Headers, will be included as header values 
in the HTTP request generated by the component:

| HTTP Header Name |
| ---------------- |
| X-FromAppId | 
| X-TransactionId |
| resourceVersion |
| ETag |
| If-Match |
| If-None-Match |
| Accept |

#### Message Body
For HTTP operations that require a content body, the body of the IN message will be used.

### OUT Message

#### Headers
The following header values are populated on the OUT message:

| ecomp-response-code | The response code produced by the HTTP request. |
| ecomp-response-message | The response message produced by the HTTP request. |

#### Message Body
For HTTP operations that produce a content body, the body of the OUT message will be populated with this result.

### Example

The following route file illustrates a simple example which takes console input and invokes the rest client, using the input from the
console as the content body for the REST request.


    <route xmlns="http://camel.apache.org/schema/spring" trace="true">
        <!-- Take some input from the console. -->
        <from uri="stream:in?promptMessage=Enter Something: " />
 
        <!-- Set the URL that we want to send our REST request to. -->
        <setHeader headerName="ecomp-url">
            <constant>https://localhost:9509/services/search-data-service/v1/search/indexes/gdf/documents/88</constant>
        </setHeader>
        
        <!-- Set values for some HTTP headers that we want to populate for our reqeust. -->
        <setHeader headerName="X-FromAppId">
            <constant>DataLayer</constant>
        </setHeader>
        <setHeader headerName="X-TransactionId">
            <constant>gdf1</constant>
        </setHeader>
        
        <!-- Invoke the REST client, using our console input as the content body of our request. -->
        <!-- Note that we provide the paths to the client certificate and keystore, as well as   -->
        <!-- the obfuscated password for the keystore.                                           -->  
        <to uri="rest-client:put?ecompClientCert=c:/dev/dl_microservice/target/swm/package/nix/dist_files/opt/app/ajsc-aai-data-layer-microservice/bundleconfig/etc/auth/aai-client-cert.p12&amp;ecompKeystore=c:/dev/dl_microservice/target/swm/package/nix/dist_files/opt/app/ajsc-aai-data-layer-microservice/bundleconfig/etc/auth/tomcat_keystore&amp;ecompKeystorePassword=70c87528c88dcd9f9c2558d30e817868"/>
  <to uri="stream:out" />
  
    </route>