Sync OkHttp version with Graylog server (3.0.1) and unbreak usage

Author: bernd

pom.xml

@@ -73,7 +73,7 @@
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>
             <artifactId>okhttp</artifactId>
-            <version>3.0.0-RC1</version>
+            <version>3.0.1</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
@@ -119,7 +119,7 @@
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>
             <artifactId>mockwebserver</artifactId>
-            <version>3.0.0-RC1</version>
+            <version>3.0.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>

src/main/java/org/graylog/plugins/usagestatistics/UsageStatsOptOutService.java

@@ -18,6 +18,7 @@
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.collect.ImmutableMap;
+import okhttp3.Call;
 import okhttp3.Callback;
 import okhttp3.Headers;
 import okhttp3.HttpUrl;
@@ -102,13 +103,13 @@ public void setOptOutState(final UsageStatsOptOutState optOutState) {
         // Run the opt-out request outside of the calling thread so it does not block.
         httpClient.newCall(request).enqueue(new Callback() {
             @Override
-            public void onFailure(Request request, IOException e) {
+            public void onFailure(Call call, IOException e) {
                 LOG.error("Error while sending anonymous usage statistics opt-out");
                 LOG.debug("Error details", e);
             }
 
             @Override
-            public void onResponse(Response response) throws IOException {
+            public void onResponse(Call call, Response response) throws IOException {
                 if (!response.isSuccessful()) {
                     LOG.warn("Couldn't successfully send usage statistics opt-out: {}", response);
                 }