I am trying to post an event to google analytics using Measurement Protocol from my Google App Engine (Java) web app.
I have tested the URL by submitting the URL directly, and it immediately shows up (realtime) in Google Analytics. But when I try to post it in the app nothing shows up.
So I assumed to start with my Java code was flawed (perhaps was), so I replaced my code with Google's example code to integrate from Google App Engine to Google Analytics here. I changed it a bit, but here are the key bits...
private static final URL GA_URL_ENDPOINT = getGoogleAnalyticsEndpoint();
private static URL getGoogleAnalyticsEndpoint() {
try {
return new URL("http", "www.google-analytics.com", "/collect");
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
}
public boolean trackEvent(
String category, String action, String label, String value) {
try {
Map<String, String> map = new LinkedHashMap<>();
map.put("v", "1"); // Version.
map.put("tid", gaTrackingId);
map.put("cid", "555");
map.put("t", "event"); // Event hit type.
map.put("ec", encode(category, true));
map.put("ea", encode(action, true));
map.put("el", encode(label, false));
map.put("ev", encode(value, false));
HTTPRequest request = new HTTPRequest(GA_URL_ENDPOINT, HTTPMethod.POST);
request.addHeader(CONTENT_TYPE_HEADER);
request.setPayload(getPostData(map));
HTTPResponse httpResponse = urlFetchService.fetch(request);
// Return True if the call was successful.
log.info("Response code for GA event is: " + httpResponse.getResponseCode());
return httpResponse.getResponseCode() >= 200;
} catch ( Exception e ) {
//HANDLE EXCEPTION
return false;
}
}
private static byte[] getPostData(Map<String, String> map) {
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry : map.entrySet()) {
sb.append(entry.getKey());
sb.append('=');
sb.append(entry.getValue());
sb.append('&');
}
if (sb.length() > 0) {
sb.setLength(sb.length() - 1); // Remove the trailing &.
}
log.info("GA event string is: " + sb.toString());
return sb.toString().getBytes(StandardCharsets.UTF_8);
}
private static String encode(String value, boolean required)
throws UnsupportedEncodingException {
if (value == null) {
if (required) {
throw new IllegalArgumentException("Required parameter not set.");
}
return "";
}
return URLEncoder.encode(value, StandardCharsets.UTF_8.name());
}
When this bit of code is called, I get the parameter string out of my log file:
v=1&tid=UA-XXXXXXXX-1&cid=555&t=event&ec=settings&ea=autopost-on&el=rkAutoPost&ev=5
I also see that I get a 2xx response code from the call to google. But nothing shows up in GA interface (realtime or otherwise).
So then I try just doing a GET from inside my browser...
http://www.google-analytics.com/collect?v=1&tid=UA-XXXXXXXX-1&cid=555&t=event&ec=settings&ea=autopost-on&el=rkAutoPost&ev=5
... and that immediately hits GA realtime. So this tells me it isn't a problem with the content of the message.
Note I also created a brand new clean view to make sure nothing was being filtered out... did't help.
Any ideas please? Thank you!
