Worker process cannot be executed in a Java Tomcat server deployed to Heroku
我有1个Web和1个工作进程使用由2个通道/队列组成的
使用从
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | BASEDIR=`dirname $0`/.. BASEDIR=`(cd"$BASEDIR"; pwd)` # OS specific support. $var _must_ be set to either true or false. cygwin=false; darwin=false; case"`uname`" in CYGWIN*) cygwin=true ;; Darwin*) darwin=true if [ -z"$JAVA_VERSION" ] ; then JAVA_VERSION="CurrentJDK" else echo"Using Java version: $JAVA_VERSION" fi if [ -z"$JAVA_HOME" ] ; then JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/${JAVA_VERSION}/Home fi ;; esac if [ -z"$JAVA_HOME" ] ; then if [ -r /etc/gentoo-release ] ; then JAVA_HOME=`java-config --jre-home` fi fi # For Cygwin, ensure paths are in UNIX format before anything is touched if $cygwin ; then [ -n"$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix"$JAVA_HOME"` [ -n"$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix"$CLASSPATH"` fi # If a specific java binary isn't specified search for the standard 'java' binary if [ -z"$JAVACMD" ] ; then if [ -n"$JAVA_HOME" ] ; then if [ -x"$JAVA_HOME/jre/sh/java" ] ; then # IBM's JDK on AIX uses strange locations for the executables JAVACMD="$JAVA_HOME/jre/sh/java" else JAVACMD="$JAVA_HOME/bin/java" fi else JAVACMD=`which java` fi fi if [ ! -x"$JAVACMD" ] ; then echo"Error: JAVA_HOME is not defined correctly." echo" We cannot execute $JAVACMD" exit 1 fi if [ -z"$REPO" ] then REPO="$BASEDIR"/repo fi CLASSPATH=$CLASSPATH_PREFIX:"$BASEDIR"/etc:"$REPO"/com/rabbitmq/amqp-client/3.3.4/amqp-client-3.3.4.jar:"$REPO"/javax/servlet/jstl/1.2/jstl-1.2.jar:"$REPO"/com/example/worker/1.0/worker-1.0.jar:"$REPO"/cloudamqp/example/amqpexample/1.0-SNAPSHOT/amqpexample-1.0-SNAPSHOT.war EXTRA_JVM_ARGUMENTS="" # For Cygwin, switch paths to Windows format before running java if $cygwin; then [ -n"$CLASSPATH" ] && CLASSPATH=`cygpath --path --windows"$CLASSPATH"` [ -n"$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows"$JAVA_HOME"` [ -n"$HOME" ] && HOME=`cygpath --path --windows"$HOME"` [ -n"$BASEDIR" ] && BASEDIR=`cygpath --path --windows"$BASEDIR"` [ -n"$REPO" ] && REPO=`cygpath --path --windows"$REPO"` fi exec"$JAVACMD" $JAVA_OPTS \\ $EXTRA_JVM_ARGUMENTS \\ -classpath"$CLASSPATH" \\ -Dapp.name="worker" \\ -Dapp.pid="$$" \\ -Dapp.repo="$REPO" \\ -Dbasedir="$BASEDIR" \\ WorkerProcess \\ "$@" |
然后将
1 2 | web: java $JAVA_OPTS -jar target/dependency/webapp-runner.jar --port $PORT target/*.war worker: sh target/bin/worker |
我使用
以下是分别来自Heroku，servlet类，worker类和POM的完整错误日志：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | 2016-10-31T14:27:32.629768+00:00 heroku[slug-compiler]: Slug compilation finished 2016-10-31T14:27:34.807925+00:00 heroku[web.1]: State changed from down to starting 2016-10-31T14:27:34.941663+00:00 heroku[worker.1]: State changed from down to starting 2016-10-31T14:27:37.334213+00:00 heroku[worker.1]: Starting process with command `sh target/bin/worker` 2016-10-31T14:27:37.825597+00:00 heroku[worker.1]: State changed from starting to up 2016-10-31T14:27:38.100208+00:00 app[worker.1]: sh: 0: Can't open target/bin/worker 2016-10-31T14:27:38.104979+00:00 heroku[worker.1]: State changed from up to crashed 2016-10-31T14:27:38.104979+00:00 heroku[worker.1]: State changed from crashed to starting 2016-10-31T14:27:38.291551+00:00 heroku[web.1]: Starting process with command `java $JAVA_OPTS -jar target/dependency/webapp-runner.jar $WEBAPP_RUNNER_OPTS --port 54481 target/amqpexample-1.0-SNAPSHOT.war` 2016-10-31T14:27:40.725610+00:00 app[web.1]: Setting JAVA_TOOL_OPTIONS defaults based on dyno size. Custom settings will override them. 2016-10-31T14:27:40.732741+00:00 app[web.1]: Picked up JAVA_TOOL_OPTIONS: -Xmx350m -Xss512k -Dfile.encoding=UTF-8 2016-10-31T14:27:41.385588+00:00 app[web.1]: Expanding amqpexample-1.0-SNAPSHOT.war into /app/target/tomcat.54481/webapps/expanded 2016-10-31T14:27:41.385722+00:00 app[web.1]: Adding Context for /app/target/tomcat.54481/webapps/expanded 2016-10-31T14:27:41.817336+00:00 heroku[worker.1]: Starting process with command `sh target/bin/worker` 2016-10-31T14:27:42.172560+00:00 app[web.1]: INFO: Initializing ProtocolHandler ["http-nio-54481"] 2016-10-31T14:27:42.172549+00:00 app[web.1]: Oct 31, 2016 2:27:42 PM org.apache.coyote.AbstractProtocol init 2016-10-31T14:27:42.201060+00:00 app[web.1]: Oct 31, 2016 2:27:42 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 2016-10-31T14:27:42.201064+00:00 app[web.1]: INFO: Using a shared selector for servlet write/read 2016-10-31T14:27:42.205036+00:00 app[web.1]: Oct 31, 2016 2:27:42 PM org.apache.catalina.core.StandardService startInternal 2016-10-31T14:27:42.205038+00:00 app[web.1]: INFO: Starting service Tomcat 2016-10-31T14:27:42.206587+00:00 app[web.1]: Oct 31, 2016 2:27:42 PM org.apache.catalina.core.StandardEngine startInternal 2016-10-31T14:27:42.206588+00:00 app[web.1]: INFO: Starting Servlet Engine: Apache Tomcat/8.0.30 2016-10-31T14:27:42.378327+00:00 heroku[worker.1]: State changed from starting to up 2016-10-31T14:27:42.441771+00:00 app[web.1]: Oct 31, 2016 2:27:42 PM org.apache.catalina.startup.ContextConfig getDefaultWebXmlFragment 2016-10-31T14:27:42.441781+00:00 app[web.1]: INFO: No global web.xml found 2016-10-31T14:27:42.765321+00:00 heroku[web.1]: State changed from starting to up 2016-10-31T14:27:43.507545+00:00 app[worker.1]: sh: 0: Can't open target/bin/worker 2016-10-31T14:27:43.591348+00:00 heroku[worker.1]: Process exited with status 127 2016-10-31T14:27:43.603552+00:00 heroku[worker.1]: State changed from up to crashed 2016-10-31T14:27:44.410603+00:00 app[web.1]: Oct 31, 2016 2:27:44 PM org.apache.jasper.servlet.TldScanner scanJars 2016-10-31T14:27:44.410621+00:00 app[web.1]: INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. 2016-10-31T14:27:44.498715+00:00 app[web.1]: Oct 31, 2016 2:27:44 PM org.apache.coyote.AbstractProtocol start 2016-10-31T14:27:44.498718+00:00 app[web.1]: INFO: Starting ProtocolHandler ["http-nio-54481"] 2016-10-31T14:27:47.410949+00:00 heroku[router]: at=info method=GET path="/" host=amqpexample.herokuapp.com request_id=334f7e05-d4e5-4f78-a444-1e6e7403e52c fwd="14.192.210.168" dyno=web.1 connect=1ms service=4305ms status=200 bytes=370 2016-10-31T14:27:50.003897+00:00 heroku[router]: at=info method=GET path="/" host=amqpexample.herokuapp.com request_id=51c9fac7-6763-4374-9f2b-672f0d7f7be7 fwd="14.192.210.168" dyno=web.1 connect=1ms service=21ms status=200 bytes=295 |
Servlet类(负责显示缓冲区消息并在刷新时等待从
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | package herokutest; import com.rabbitmq.client.*; import java.io.IOException; import java.net.URISyntaxException; import java.security.KeyManagementException; import java.security.NoSuchAlgorithmException; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class HelloWorld extends javax.servlet.http.HttpServlet { private final static String QUEUE_NAME ="hello"; private final static String ANOTHER_QUEUE ="ANOTHER"; public Channel channel; public Channel anotherChannel; public DefaultConsumer consumer; public String message ="Temporary"; public void init(final ServletConfig config) throws ServletException { try { createChannel(); } catch (Exception e) { e.printStackTrace(); } finally { consumer = new DefaultConsumer(anotherChannel) { @Override public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException { String innerMessage = new String(body,"UTF-8"); message = innerMessage; } }; try { anotherChannel.basicConsume(ANOTHER_QUEUE, true, consumer); } catch (IOException e) { e.printStackTrace(); } } } public void createChannel() throws NoSuchAlgorithmException, KeyManagementException, URISyntaxException, IOException { String uri = System.getenv("CLOUDAMQP_URL"); if (uri == null) uri ="amqp://guest:guest@localhost"; ConnectionFactory factory = new ConnectionFactory(); factory.setUri(uri); factory.setRequestedHeartbeat(30); factory.setConnectionTimeout(30); Connection connection = factory.newConnection(); channel = connection.createChannel(); anotherChannel = connection.createChannel(); channel.queueDeclare(QUEUE_NAME, false, false, false, null); anotherChannel.queueDeclare(ANOTHER_QUEUE, false, false, false, null); } protected void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException { String test="test"; channel.basicPublish("", QUEUE_NAME, null, test.getBytes()); request.setAttribute("message", message); request.getRequestDispatcher("/index.jsp").forward(request, response); } } |
Worker类：??(负责将消息
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | import com.rabbitmq.client.*; import java.io.IOException; public class WorkerProcess { private final static String QUEUE_NAME ="hello"; private final static String ANOTHER_QUEUE ="ANOTHER"; static String message; public static void main(String[] argv) throws Exception { ConnectionFactory factory = new ConnectionFactory(); String uri = System.getenv("CLOUDAMQP_URL"); if (uri == null) uri ="amqp://guest:guest@localhost"; factory.setUri(uri); factory.setRequestedHeartbeat(30); factory.setConnectionTimeout(30); Connection connection = factory.newConnection(); Channel channel = connection.createChannel(); final Channel anotherChannel = connection.createChannel(); channel.queueDeclare(QUEUE_NAME, false, false, false, null); anotherChannel.queueDeclare(ANOTHER_QUEUE, false, false, false, null); System.out.println(" [*] Connected to Worker"); final Consumer consumer = new DefaultConsumer(channel) { @Override public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException { message = new String(body,"UTF-8"); String anotherMessage="Another message"; anotherChannel.basicPublish("", ANOTHER_QUEUE, null, anotherMessage.getBytes()); } }; channel.basicConsume(QUEUE_NAME, true, consumer); } } |
POM：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 | <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>cloudamqp.example</groupId> amqpexample</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <dependencies> <dependency> <groupId>com.rabbitmq</groupId> amqp-client</artifactId> <version>3.3.4</version> </dependency> <dependency> <groupId>javax.servlet</groupId> jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <!-- This is my worker jar included as dependency --> <dependency> <groupId>com.example</groupId> worker</artifactId> <version>1.0</version> </dependency> </dependencies> <!-- My local repository containing my worker .jar file--> <repositories> <repository> <id>project.local</id> <name>project</name> <url>file:${project.basedir}/localrepo</url> </repository> </repositories> <build> <plugins> <plugin> <groupId>com.heroku.sdk</groupId> heroku-maven-plugin</artifactId> <version>1.1.1</version> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> maven-war-plugin</artifactId> <version>2.4</version> <configuration> <webResources> <resource> <directory>src/web</directory> </resource> </webResources> false</archiveClasses> </configuration> </plugin> <plugin> <groupId>org.codehaus.mojo</groupId> appassembler-maven-plugin</artifactId> <version>1.1.1</version> <configuration> target</assembleDirectory> <programs> <program> <mainClass>WorkerProcess</mainClass> <name>worker</name> </program> </programs> </configuration> <executions> <execution> <phase>package</phase> <goals> <goal>assemble</goal> </goals> </execution> </executions> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> maven-dependency-plugin</artifactId> <version>2.3</version> <executions> <execution> <phase>package</phase> <goals><goal>copy</goal></goals> <configuration> <groupId>com.github.jsimone</groupId> webapp-runner</artifactId> <version>8.0.30.2</version> <destFileName>webapp-runner.jar</destFileName> </artifactItem> </artifactItems> </configuration> </execution> </executions> </plugin> </plugins> </build> </project> |
这是日志中的重要消息：
1 | 2016-10-31T14:27:43.507545+00:00 app[worker.1]: sh: 0: Can't open target/bin/worker |
您的Maven版本是否生成此
我不希望CLI部署能够正常工作，因为默认情况下它不包含