Tracing: added OpenTelemetry implementation

Added TracingInfo and TracingInfoFactory implementations in separate
driver-opentelemetry module.

Author: wprzytula

driver-opentelemetry/pom.xml

@@ -0,0 +1,149 @@
+<!--
+
+    Copyright DataStax, Inc.
+
+    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.
+
+-->
+<!--
+    Copyright (C) 2021 ScyllaDB
+    Modified by ScyllaDB
+-->
+<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/maven-v4_0_0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>com.scylladb</groupId>
+        <artifactId>scylla-driver-parent</artifactId>
+        <version>3.11.2.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>scylla-driver-opentelemetry</artifactId>
+    <name>Java Driver for Scylla and Apache Cassandra - OpenTelemetry integration</name>
+    <description>An extension of Java Driver for Scylla and Apache Cassandra by adding
+        functionality of creating traces and spans in OpenTelemetry format.
+    </description>
+
+    <dependencyManagement>
+
+        <dependencies>
+
+            <dependency>
+                <groupId>io.opentelemetry</groupId>
+                <artifactId>opentelemetry-bom</artifactId>
+                <version>1.9.1</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+
+        </dependencies>
+
+    </dependencyManagement>
+
+    <dependencies>
+
+        <!-- driver dependencies -->
+
+        <dependency>
+            <groupId>com.scylladb</groupId>
+            <artifactId>scylla-driver-core</artifactId>
+        </dependency>
+
+        <!-- OpenTelemetry -->
+
+        <dependency>
+            <groupId>io.opentelemetry</groupId>
+            <artifactId>opentelemetry-api</artifactId>
+            <version>1.9.1</version>
+        </dependency>
+
+        <!-- tests -->
+
+        <dependency>
+            <groupId>com.scylladb</groupId>
+            <artifactId>scylla-driver-core</artifactId>
+            <type>test-jar</type>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.opentelemetry</groupId>
+            <artifactId>opentelemetry-sdk</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-exec</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.testng</groupId>
+            <artifactId>testng</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-log4j12</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <plugins>
+
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+
+            <!-- Disable check-jdk6 check for this submodule. -->
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>animal-sniffer-maven-plugin</artifactId>
+                <version>1.15</version>
+                <executions>
+                    <execution>
+                        <id>check-jdk6</id>
+                        <phase>process-classes</phase>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                        <configuration>
+                            <skip>true</skip>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>check-jdk8</id>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                        <configuration>
+                            <skip>true</skip>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+
+        </plugins>
+
+    </build>
+
+</project>