Build getting failed due to firebase sdk dependency

Question

I have created pom.ml file as mentioned below:

<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>
    <groupId>friendr-core</groupId>
    <artifactId>friendr-core</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>friendr-core</name>
    <url>http://www.google.com/</url>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <dropwizard.version>1.0.4</dropwizard.version>
        <testng.version>6.1.1</testng.version>
        <jersey-entity-filtering-version>2.23.1</jersey-entity-filtering-version>
        <mockito.version>1.10.19</mockito.version>
        <spring-framework.version>4.3.4.RELEASE</spring-framework.version>
        <c3p0-version>0.9.1.2</c3p0-version>
        <mysql-connector-java-version>6.0.5</mysql-connector-java-version>
        <java.version>1.8</java.version>
        <org.apache.httpcomponents-version>4.3.1</org.apache.httpcomponents-version>
        <jbcrypt-version>0.3m</jbcrypt-version>
        <testng-version>6.9.10</testng-version>
        <java-mail.version>1.4.5</java-mail.version>
        <velocity.version>1.7</velocity.version>
        <maven-shade-plugin-version>2.2</maven-shade-plugin-version>
        <maven-compiler-plugin-version>3.1</maven-compiler-plugin-version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>com.smoketurner</groupId>
            <artifactId>dropwizard-swagger</artifactId>
            <version>1.0.0-1</version>
        </dependency>

        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>${org.apache.httpcomponents-version}</version>
        </dependency>

        <!-- Bcrypt : Hashing library used for password -->
        <dependency>
            <groupId>org.mindrot</groupId>
            <artifactId>jbcrypt</artifactId>
            <version>${jbcrypt-version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>${org.apache.httpcomponents-version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.apache.httpcomponents</groupId>
                    <artifactId>httpcore</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>io.dropwizard</groupId>
            <artifactId>dropwizard-core</artifactId>
            <version>${dropwizard.version}</version>
        </dependency>
        <dependency>
            <groupId>io.dropwizard</groupId>
            <artifactId>dropwizard-jdbi</artifactId>
            <version>${dropwizard.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring-framework.version}</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring-framework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring-framework.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring-framework.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring-framework.version}</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connector-java-version}</version>
        </dependency>

        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>${c3p0-version}</version>
        </dependency>

        <!-- Test Dependencies -->
        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>${testng-version}</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>${mockito.version}</version>
            <scope>test</scope>
        </dependency>

        <!-- Email dependency -->
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity</artifactId>
            <version>${velocity.version}</version>
        </dependency>

        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>${java-mail.version}</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>



    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>${maven-compiler-plugin-version}</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>${maven-shade-plugin-version}</version>
                <configuration>
                    <createDependencyReducedPom>true</createDependencyReducedPom>
                    <filters>
                        <filter>
                            <artifact>*:*</artifact>
                            <excludes>
                                <exclude>META-INF/*.SF</exclude>
                                <exclude>META-INF/*.DSA</exclude>
                                <exclude>META-INF/*.RSA</exclude>
                            </excludes>
                        </filter>
                    </filters>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.handlers</resource>
                                </transformer>
                                <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                                    <resource>META-INF/spring.schemas</resource>
                                </transformer>
                                <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
                                <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>com.friendr.core.application.CoreApplication</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>

    </build>
</project>

Now it is working fine there is no issue but when I am trying to add below dependency:

<dependency>
    <groupId>com.google.firebase</groupId>
    <artifactId>firebase-admin</artifactId>
    <version>6.8.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.auto.value/auto-value -->
<dependency>
    <groupId>com.google.auto.value</groupId>
    <artifactId>auto-value</artifactId>
    <version>1.4.1</version>
    <scope>provided</scope>
</dependency>

And executed command mvn clean package then build was failed and getting below error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:2.2:shade (default) on project friendr-core: Error creating shaded jar: invalid LOC header (bad signature) -> [Help 1]

Please help me to add these dependency in my existing pom.xml file.

Answer 1

Seems like either the firebase-admin or auto-value (or both) are corrupt. There are at least two ways to fix that if that is the problem

Change version

Both packages have newer versions available

<dependency>
    <groupId>com.google.firebase</groupId>
    <artifactId>firebase-admin</artifactId>
    <version>6.8.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.auto.value/auto-value -->
<dependency>
    <groupId>com.google.auto.value</groupId>
    <artifactId>auto-value</artifactId>
    <version>1.6.5</version>
    <scope>provided</scope>
</dependency>

This will make maven download a new version of those libraries, which should be fine unless there's a reason you really have to use the versions you specified in the question. Try running mvn clean package again

Delete locally cached libraries

Maven stores (caches) copies of dependencies. By default they are stored in

• Windows: C:\\Users\\{your-username}\\.m2\\repository
• Linux/Mac: ~/.m2/repository

Delete the cached versions of both libraries by deleting the following folders ~/.m2/repository/com/google/firebase/firebase-admin/6.8.0 and ~/.m2/repository/com/google/auto/value/auto-value/1.4.1 (or similar for Windows)

Then try to run mvn clean package again