Move HttpSpanCollector to its own module

similar to Kafka and Scribe, Http should be in its own module, allowing
users to pick whichever they want.

This basically moves 2a85cec to its own module

brave-core/pom.xml

@@ -60,12 +60,6 @@
         <version>3.1.2</version>
         <scope>test</scope>
     </dependency>
-    <dependency>
-        <groupId>com.squareup.okhttp3</groupId>
-        <artifactId>mockwebserver</artifactId>
-        <version>3.0.1</version>
-        <scope>test</scope>
-    </dependency>
   </dependencies>
 
     <build>
@@ -88,7 +82,7 @@
                             <shadeTestJar>false</shadeTestJar>
                             <minimizeJar>true</minimizeJar>
                             <dependencyReducedPomLocation>${project.build.directory}/dependency-reduced-pom.xml</dependencyReducedPomLocation>
-                            <!-- Use of zipkin-java are internal only; don't add dependencies -->
+                            <!-- Use of zipkin-java is internal only; don't add dependency -->
                             <relocations>
                                 <relocation>
                                     <pattern>zipkin</pattern>

brave-spancollector-http/LICENSE

@@ -0,0 +1,13 @@
+Copyright 2015 <kristofa@github.com>
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.

brave-spancollector-http/README.md

@@ -0,0 +1,4 @@
+# brave-spancollector-http #
+
+SpanCollector that is used to submit spans to Zipkins Http endpoint `/spans`.
+

brave-spancollector-http/pom.xml

@@ -0,0 +1,68 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.github.kristofa</groupId>
+        <artifactId>brave</artifactId>
+        <version>3.4.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>brave-spancollector-http</artifactId>
+    <packaging>jar</packaging>
+
+    <name>brave-spancollector-http</name>
+    <description>Brave SpanCollector that submits spans to zipkins http endpoint</description>
+    <url>https://github.com/kristofa/brave</url>
+    <licenses>
+        <license>
+            <name>Apache 2</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.github.kristofa</groupId>
+            <artifactId>brave-core</artifactId>
+            <version>3.4.1-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.auto.value</groupId>
+            <artifactId>auto-value</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.thrift</groupId>
+            <artifactId>libthrift</artifactId>
+        </dependency>
+        <!-- org.apache.thrift.ProcessFunction v0.9 uses SLF4J at runtime -->
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-slf4j-impl</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.zipkin.java</groupId>
+            <artifactId>zipkin</artifactId>
+            <version>0.4.3</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.10</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>mockwebserver</artifactId>
+            <version>3.0.1</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+</project>

brave-core/src/main/java/com/github/kristofa/brave/HttpSpanCollector.java → brave-spancollector-http/src/main/java/com/github/kristofa/brave/http/HttpSpanCollector.java

@@ -1,5 +1,6 @@
-package com.github.kristofa.brave;
+package com.github.kristofa.brave.http;
 
+import com.github.kristofa.brave.*;
 import com.github.kristofa.brave.internal.Nullable;
 import com.google.auto.value.AutoValue;
 import com.twitter.zipkin.gen.Span;

brave-core/src/test/java/com/github/kristofa/brave/HttpSpanCollectorTest.java → brave-spancollector-http/src/test/java/com/github/kristofa/brave/http/HttpSpanCollectorTest.java

@@ -1,5 +1,6 @@
-package com.github.kristofa.brave;
+package com.github.kristofa.brave.http;
 
+import com.github.kristofa.brave.SpanCollectorMetricsHandler;
 import com.twitter.zipkin.gen.Span;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicInteger;

pom.xml

@@ -52,6 +52,7 @@
     <module>brave-core-spring</module>
     <module>brave-resteasy-spring</module>
     <module>brave-resteasy3-spring</module>
+    <module>brave-spancollector-http</module>
     <module>brave-spancollector-scribe</module>
     <module>brave-spancollector-kafka</module>
     <module>brave-sampler-zookeeper</module>