Adding graphite support

Foam/foam/src/main/java/com/percolate/foam/FoamApiKeys.java

@@ -49,5 +49,6 @@
     String mixpanel() default "";
     String googleAnalytics() default "";
     String flurry() default "";
+    String graphite() default "";
 
 }

Foam/foam/src/main/java/com/percolate/foam/FoamMain.java

@@ -43,6 +43,7 @@ protected void init(FoamApiKeys foamApiKeys) {
         services.put(ServiceType.MIXPANEL, new Mixpanel(context));
         services.put(ServiceType.FLURRY, new Flurry(context));
         services.put(ServiceType.GOOGLE_ANALYTICS, new GoogleAnalytics(context));
+        services.put(ServiceType.GRAPHITE, new Graphite(context));
     }
 
     /**
@@ -81,6 +82,8 @@ private void initializeServices() {
                 if (((Flurry) service).checkForJar()) {
                     apiKey = foamApiKeys.flurry();
                 }
+            } else if(serviceType == ServiceType.GRAPHITE){
+                apiKey = foamApiKeys.graphite();
             }
 
             if(Utils.isNotBlank(apiKey)){

Foam/foam/src/main/java/com/percolate/foam/Graphite.java

@@ -0,0 +1,119 @@
+package com.percolate.foam;
+
+import android.content.Context;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.Socket;
+
+/**
+ * {@inheritDoc}
+ */
+class Graphite extends ServiceImpl implements EventTrackingService {
+
+    private String host;
+    private int port;
+    private String apiKey;
+
+    Graphite(Context context) {
+        super(context);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void enable(String url) {
+        if(url.contains(":") && url.split(":").length == 2) {
+            String first = url.split(":")[0];
+            String second = url.split(":")[1];
+
+            if (first.contains("@")) {
+                this.apiKey = first.split("@")[0];
+                this.host = first.split("@")[1];
+            } else {
+                this.host = url.split(":")[0];
+            }
+
+            try {
+                this.port = Integer.parseInt(second);
+            } catch (NumberFormatException ex) {
+                Utils.logIssue("Invalid port in Graphite URL [" + second + "]", ex);
+            }
+        } else {
+            Utils.logIssue("Invalid Graphite URL.  Expecting \"[key@]host:port\" format.", null);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean isEnabled() {
+        return host != null && port != 0;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public ServiceType getServiceType() {
+        return ServiceType.GRAPHITE;
+    }
+
+    /**
+     * Send data to graphite in the format "metric_path value timestamp\n".
+     * Example: "com.myapp.activities.MainActivity 1 1429801333\n"
+     * ApiKey will be appended to the metric_path as expected by hosted providers.
+     *
+     * {@inheritDoc}
+     */
+    @Override
+    public void logEvent(Context context, String event) {
+        StringBuilder eventData = new StringBuilder();
+        if(Utils.isNotBlank(apiKey)){
+            eventData.append(apiKey);
+            eventData.append(".");
+        }
+        eventData.append(Utils.getApplicationPackageName(context));
+        eventData.append(".");
+        eventData.append(event);
+        eventData.append(" 1 ");
+        eventData.append(System.currentTimeMillis() / 1000L);
+        eventData.append("\n");
+
+        sendData(eventData.toString());
+    }
+
+    /**
+     * Send data to Graphite server.
+     * Data is sent over TCP in a new thread.
+     *
+     * @param graphiteEvent Event data to send to graphite.
+     */
+    private void sendData(final String graphiteEvent) {
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
+                Socket conn = null;
+                try {
+                    conn = new Socket(host, port);
+                    DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
+                    dos.writeBytes(graphiteEvent);
+                    dos.flush();
+                } catch (IOException ex) {
+                    Utils.logIssue("Error sending graphite event [" + graphiteEvent + "].", ex);
+                } finally {
+                    if(conn != null) {
+                        try {
+                            conn.close();
+                        } catch (IOException ex) {
+                            Utils.logIssue("Could not close graphite socket.", ex);
+                        }
+                    }
+                }
+            }
+        }).start();
+    }
+
+}

Foam/foam/src/main/java/com/percolate/foam/ServiceType.java

@@ -10,5 +10,6 @@ enum ServiceType {
     MIXPANEL,
     GOOGLE_ANALYTICS,
     FLURRY,
-    LOGENTRIES
+    LOGENTRIES,
+    GRAPHITE
 }

README.md

@@ -33,7 +33,7 @@ You add your API Keys, we'll do the rest.
 | PagerDuty          | Flurry           | Papertrail     |
 | Papertrail         | Mixpanel         | Logentries     |
 | HockeyApp          | Google Analytics |                |
-| Flurry             |                  |                |
+| Flurry             | Graphite         |                |
 
 
 **Crash Reporting:** Unhandled exceptions will be reported.
@@ -54,6 +54,7 @@ You add your API Keys, we'll do the rest.
         mixpanel = "221b331c441d551e661f771g881h991i",
         googleAnalytics = "UA-00000000-1",
         logentries = "data.logentries.com:12345",
+        graphite = "[api-key@]graphite.myhost.com:2003"
     )
     public class MyApplication extends FoamApplication {
     }
@@ -96,6 +97,8 @@ That's it.  You've just enabled all of these services for your application.  Wel
 
 **Flurry**: Create an application in Flurry then add your application key. _(FlurryAnalytics-x.x.x.jar must be added manually to your project {TODO document in wiki})_
 
+**Graphite**: Provided by the maintainer of your graphite host.
+
 ## Notes:
 
   - It takes time for some services to process incoming data.  There may be a delay of few hours before anything shows up.  Be patient.