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License: GNU Lesser General Public License v2.1
SDNotify implements the systemd notification protocol in Java.
License: GNU Lesser General Public License v2.1
According to comment
I think the encoding should be adjusted to UTF-8 because of the SystemD expectation being UTF-8 (as correctly stated in the comment) which is also documented in https://www.freedesktop.org/software/systemd/man/sd_notify.html
I think it's beneficial if users of the library have a consistent way of sending the process PID to SystemD which is consistent with the check in determinePid().equals(watchdog_pid)
Hi I'm unable to get SDNotify 1.4 from maven central, only 1.3. Would you mind uploading it? (thanks so much for this library btw!)
The Project is supposed to run with jdk 1.8 but it uses a method which is marked @since 9
and therefore doesn't really work on jdk 1.8, see Stacktrace below:
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
Exception in thread "main" java.lang.NoSuchMethodError: java.util.List.of(Ljava/lang/Object;Ljava/lang/Object;)Ljava/util/List;
at info.faljse.SDNotify.jna.CLibrary$SockAddr.getFieldOrder(CLibrary.java:81)
at com.sun.jna.Structure.fieldOrder(Structure.java:1044)
at com.sun.jna.Structure.getFields(Structure.java:1098)
at com.sun.jna.Structure.deriveLayout(Structure.java:1265)
at com.sun.jna.Structure.calculateSize(Structure.java:1192)
at com.sun.jna.Structure.calculateSize(Structure.java:1144)
at com.sun.jna.Structure.allocateMemory(Structure.java:426)
at com.sun.jna.Structure.<init>(Structure.java:216)
at com.sun.jna.Structure.<init>(Structure.java:204)
at com.sun.jna.Structure.<init>(Structure.java:191)
at com.sun.jna.Structure.<init>(Structure.java:183)
at info.faljse.SDNotify.jna.CLibrary$SockAddr.<init>(CLibrary.java:75)
at info.faljse.SDNotify.SDNotify.<init>(SDNotify.java:48)
at info.faljse.SDNotify.SDNotify.getInstance(SDNotify.java:186)
at info.faljse.SDNotify.SDNotify.sendNotify(SDNotify.java:72)
Hello,
Unfortunately, it seems like 1.2 won't start for us. Here is the relevant piece of stacktrace :
Caused by: java.lang.Error: Structure.getFieldOrder() on class info.faljse.SDNotify.jna.CLibrary$SockAddr returns names ([addr, family]) which do not match declared field names ([addr])
at com.sun.jna.Structure.getFields(Structure.java:1027)
at com.sun.jna.Structure.deriveLayout(Structure.java:1172)
at com.sun.jna.Structure.calculateSize(Structure.java:1097)
at com.sun.jna.Structure.calculateSize(Structure.java:1049)
at com.sun.jna.Structure.allocateMemory(Structure.java:403)
at com.sun.jna.Structure.<init>(Structure.java:194)
at com.sun.jna.Structure.<init>(Structure.java:182)
at com.sun.jna.Structure.<init>(Structure.java:169)
at com.sun.jna.Structure.<init>(Structure.java:161)
at info.faljse.SDNotify.jna.CLibrary$SockAddr.<init>(CLibrary.java:70)
at info.faljse.SDNotify.SDNotify.<init>(SDNotify.java:46)
at info.faljse.SDNotify.SDNotify.getInstance(SDNotify.java:184)
at info.faljse.SDNotify.SDNotify.isAvailable(SDNotify.java:59)
...
If that's any help : the OS is CentOS Linux release 7.5.1804, kernel is 3.10.0-862.11.6.el7.x86_64.
Cheers
First of all, thank you for this library!
I have a question/potential issue with systemd
version 208
It seems my platform exposes notify socket like so:
u_dgr UNCONN 0 0 @/org/freedesktop/systemd1/notify 7815 * 0 users:(("systemd",1,7))
Which means that this is abstract UNIX domain socket
In my app: SystemdNotify.ready("some info")
fails with (stack edited):
com.sun.jna.LastErrorException: [107] Transport endpoint is not connected
at info.faljse.SDNotify.jna.CLibrary.send(Native Method)
at info.faljse.SDNotify.io.NativeDomainSocket.send(NativeDomainSocket.java:58)
at info.faljse.SDNotify.SDNotify.sendString(SDNotify.java:193)
at info.faljse.SDNotify.SDNotify.sendNotify(SDNotify.java:70)
I have a suspicion that the @
character should by manually swapped into NULL byte before using here:
CLibrary.SockAddr sockAddr = new CLibrary.SockAddr(socketName);
sd = new NativeDomainSocket();
sd.connect(sockAddr);
Could you confirm it is indeed an issue?
If not, could you help me understand the problem with [107] Transport endpoint is not connected
?
The README mentions import info.faljse.systemdnotify.SDNotify
, but this leads to an error message claiming the systemdnotify
package cannot be found. Should it be changed to say import info.faljse.SDNotify.SDNotify
, which seems to work, instead?
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