How can I get Jsvc to find the DaemonLoader?

Question

I have the commons-daemon-x.jar in the classpath. The Jsvc is successfully launching the Java VM. But jsvc is reporting that it cannot find the daemon loader class even though it is in the classpath.

Does anyone know how to solve this problem? I’m running Mac OS X 10.8.3. Thanks.

Here's an excerpt of the jsvc debug output:

...    
+-- DUMPING JAVA VM CREATION ARGUMENTS -----------------
| Version:                       0x010004
| Ignore Unrecognized Arguments: False
| Extra options:                 1
|   "-Djava.class.path=commons-daemon-1.0.15.jar:./api-monitor.jar" (0x00000000)
+———————————————————————————
...
Java VM created successfully
Cannot find daemon loader org/apache/commons/daemon/support/DaemonLoader
java_init failed
Service exit with a return value of 1
...

---

Here’s the full debug output if it helps:

sudo jsvc -jvm server -debug -cp commons-daemon-1.0.15.jar:./api-monitor.jar ApiMonitorDaemon

+-- DUMPING PARSED COMMAND LINE ARGUMENTS --------------
| Detach:          True
| Show Version:    No
| Show Help:       No
| Check Only:      Disabled
| Stop:            False
| Wait:            0
| Run as service:  No
| Install service: No
| Remove service:  No
| JVM Name:        "server"
| Java Home:       "null"
| PID File:        "/var/run/jsvc.pid"
| User Name:       "null"
| Extra Options:   1
|   "-Djava.class.path=commons-daemon-1.0.15.jar:./api-monitor.jar"
| Class Invoked:   "ApiMonitorDaemon"
| Class Arguments: 0
+-------------------------------------------------------
Home not specified on command line, using environment
Home not on command line or in environment, searching
Attempting to locate Java Home in /System/Library/Frameworks/JavaVM.framework/Home
Attempting to locate VM configuration file /System/Library/Frameworks/JavaVM.framework/Home/jre/lib/jvm.cfg
Attempting to locate VM configuration file /System/Library/Frameworks/JavaVM.framework/Home/lib/jvm.cfg
Found VM configuration file at /System/Library/Frameworks/JavaVM.framework/Home/lib/jvm.cfg
Found VM client definition in configuration
Checking library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libclient.dylib
Found VM jvm definition in configuration
Checking library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libjvm.dylib
Found VM hotspot definition in configuration
Checking library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libhotspot.dylib
Found VM server definition in configuration
Checking library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libserver.dylib
Found VM classic definition in configuration
Checking library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libclassic.dylib
Cannot locate library for VM classic (skipping)
Java Home located in /System/Library/Frameworks/JavaVM.framework/Home
+-- DUMPING JAVA HOME STRUCTURE ------------------------
| Java Home:       "/System/Library/Frameworks/JavaVM.framework/Home"
| Java VM Config.: "/System/Library/Frameworks/JavaVM.framework/Home/lib/jvm.cfg"
| Found JVMs:      4
| JVM Name:        "client"
|                  "/System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libclient.dylib"
| JVM Name:        "jvm"
|                  "/System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libjvm.dylib"
| JVM Name:        "hotspot"
|                  "/System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libhotspot.dylib"
| JVM Name:        "server"
|                  "/System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libserver.dylib"
+-------------------------------------------------------
my-server:Applications developer$ redirecting stdout to /dev/null and stderr to /dev/null
Switching umask back to 022 from 077
Using specific JVM in /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libserver.dylib
Attemtping to load library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libserver.dylib
JVM library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libserver.dylib loaded
Attemtping to load library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libverify.dylib
Shell library /System/Library/Frameworks/JavaVM.framework/Home/../Libraries/libverify.dylib loaded
JVM library entry point found (0x02A49762)
+-- DUMPING JAVA VM CREATION ARGUMENTS -----------------
| Version:                       0x010004
| Ignore Unrecognized Arguments: False
| Extra options:                 1
|   "-Djava.class.path=commons-daemon-1.0.15.jar:./api-monitor.jar" (0x00000000)
+-------------------------------------------------------
| Internal options:              4
|   "-Dcommons.daemon.process.id=8919" (0x00000000)
|   "-Dcommons.daemon.process.parent=8918" (0x00000000)
|   "-Dcommons.daemon.version=1.0.15-dev" (0x00000000)
|   "abort" (0x022bef30)
+-------------------------------------------------------
Java VM created successfully
Cannot find daemon loader org/apache/commons/daemon/support/DaemonLoader
java_init failed
Service exit with a return value of 1

Answer 1

You probably found the solution by now, but just in case someone stumble over this in the future, what I had missed in mine is that current directory defaults to '/', so you have to specify it if you want to use relative paths.

sudo jsvc -jvm server -cwd /path/to/my/daemon/ -cp commons-daemon-1.0.15.jar:./api-monitor.jar ApiMonitorDaemon

Note: my OS is ubuntu 12.10