Fix Ratpack instrumentation for newer versions of Guava. (#360)

Ratpack 1.4 should still work if you increase your guava version to 20+ (instead of 19).

Co-authored-by: Tyler Benson <tyler.benson@datadoghq.com>

instrumentation/ratpack-1.5/ratpack-1.5.gradle

@@ -11,13 +11,9 @@ muzzle {
   pass {
     group = "io.ratpack"
     module = 'ratpack-core'
-    versions = "[1.4.0,)"
-  }
-  // Some maven dependencies are missing for pre 1.0 ratpack, so we can't assertInverse.
-  fail {
-    group = "io.ratpack"
-    module = 'ratpack-core'
-    versions = "[1.0,1.4.0)"
+    versions = "[1.5.0,)"
+    skipVersions += ["0.9.12", "0.9.13", "0.9.14",]
+    assertInverse = true
   }
 }
 
@@ -28,9 +24,9 @@ testSets {
 }
 
 dependencies {
-  main_java8CompileOnly group: 'io.ratpack', name: 'ratpack-core', version: '1.4.0'
+  main_java8CompileOnly group: 'io.ratpack', name: 'ratpack-core', version: '1.5.0'
 
   testCompile project(':instrumentation:netty:netty-4.1')
-  testCompile group: 'io.ratpack', name: 'ratpack-groovy-test', version: '1.4.0'
+  testCompile group: 'io.ratpack', name: 'ratpack-groovy-test', version: '1.5.0'
   latestDepTestCompile group: 'io.ratpack', name: 'ratpack-groovy-test', version: '+'
 }

instrumentation/ratpack-1.5/src/main/java/io/opentelemetry/auto/instrumentation/ratpack/ContinuationInstrumentation.java

@@ -23,6 +23,7 @@ import static net.bytebuddy.matcher.ElementMatchers.named;
 import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
 
 import com.google.auto.service.AutoService;
+import com.google.common.net.HostAndPort;
 import io.opentelemetry.auto.tooling.Instrumenter;
 import java.util.Map;
 import net.bytebuddy.asm.Advice;
@@ -70,9 +71,12 @@ public final class ContinuationInstrumentation extends Instrumenter.Default {
       block = BlockWrapper.wrapIfNeeded(block);
     }
 
-    public void muzzleCheck(final PathBinding binding) {
+    public void muzzleCheck(final PathBinding binding, final HostAndPort host) {
       // This was added in 1.4.  Added here to ensure consistency with other instrumentation.
       binding.getDescription();
+
+      // This is available in Guava 20 which was required starting in 1.5
+      host.getHost();
     }
   }
 }

instrumentation/ratpack-1.5/src/main/java/io/opentelemetry/auto/instrumentation/ratpack/DefaultExecutionInstrumentation.java

@@ -21,6 +21,7 @@ import static net.bytebuddy.matcher.ElementMatchers.named;
 import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
 
 import com.google.auto.service.AutoService;
+import com.google.common.net.HostAndPort;
 import io.opentelemetry.auto.tooling.Instrumenter;
 import java.util.Map;
 import net.bytebuddy.asm.Advice;
@@ -67,9 +68,12 @@ public final class DefaultExecutionInstrumentation extends Instrumenter.Default
       segment = ActionWrapper.wrapIfNeeded(segment);
     }
 
-    public void muzzleCheck(final PathBinding binding) {
+    public void muzzleCheck(final PathBinding binding, final HostAndPort host) {
       // This was added in 1.4.  Added here to ensure consistency with other instrumentation.
       binding.getDescription();
+
+      // This is available in Guava 20 which was required starting in 1.5
+      host.getHost();
     }
   }
 }

instrumentation/ratpack-1.5/src/main/java8/io/opentelemetry/auto/instrumentation/ratpack/RatpackServerDecorator.java

@@ -54,7 +54,7 @@ public class RatpackServerDecorator extends HttpServerDecorator<Request, Request
 
   @Override
   protected String peerHostIP(final Request request) {
-    return request.getRemoteAddress().getHostText();
+    return request.getRemoteAddress().getHost();
   }
 
   @Override

settings.gradle

@@ -120,7 +120,7 @@ include ':instrumentation:play-ws:play-ws-2.0'
 include ':instrumentation:play-ws:play-ws-2.1'
 include ':instrumentation:play-ws:play-ws-common'
 include ':instrumentation:rabbitmq-amqp-2.7'
-include ':instrumentation:ratpack-1.4'
+include ':instrumentation:ratpack-1.5'
 include ':instrumentation:reactor-3.1'
 include ':instrumentation:rmi'
 include ':instrumentation:rxjava-1.0'