Implementing the Process.Plugin Interface

1global class flowChat implements Process.Plugin { 
2
3// The main method to be implemented. The Flow calls this at runtime.
4global Process.PluginResult invoke(Process.PluginRequest request) { 
5        // Get the subject of the Chatter post from the flow
6        String subject = (String) request.inputParameters.get('subject');
7        
8        // Use the Chatter APIs to post it to the current user's feed
9        FeedItem fItem = new FeedItem(); 
10        fItem.ParentId = UserInfo.getUserId(); 
11        fItem.Body = 'Force.com flow Update: ' + subject; 
12        insert fItem; 
13
14        // return to Flow
15        Map<String,Object> result = new Map<String,Object>(); 
16        return new Process.PluginResult(result); 
17    } 
18
19    // Returns the describe information for the interface
20    global Process.PluginDescribeResult describe() { 
21        Process.PluginDescribeResult result = new Process.PluginDescribeResult(); 
22        result.Name = "flowchatplugin";
23        result.Tag = "chat";
24        result.inputParameters = new 
25           List<Process.PluginDescribeResult.InputParameter>{ 
26               new Process.PluginDescribeResult.InputParameter('subject', 
27               Process.PluginDescribeResult.ParameterType.STRING, true) 
28            }; 
29        result.outputParameters = new 
30           List<Process.PluginDescribeResult.OutputParameter>{ }; 
31        return result; 
32    }
33}

1@isTest
2private class flowChatTest {
3
4    static testmethod void flowChatTests() {
5      
6        flowChat plugin = new flowChat();
7        Map<String,Object> inputParams = new Map<String,Object>();
8
9        string feedSubject = 'Flow is alive';
10        InputParams.put('subject', feedSubject);
11
12        Process.PluginRequest request = new Process.PluginRequest(inputParams);           
13        
14        plugin.invoke(request);
15    } 
16}