playing with socket of systemd journal

gradle/test/junit5.gradle

@@ -22,6 +22,7 @@ test {
             '--add-opens=java.base/sun.security.util=ALL-UNNAMED'
     systemProperty 'java.util.logging.config.file', 'src/test/resources/logging.properties'
     environment 'NOTIFY_SOCKET', '/run/systemd/notify'
+    environment 'JOURNAL_SOCKET', '/run/systemd/journal/socket'
     testLogging {
         events 'STARTED', 'PASSED', 'FAILED', 'SKIPPED'
         showStandardStreams = true

net-socket/src/main/java/module-info.java

@@ -2,7 +2,6 @@ module org.xbib.net.socket {
     requires java.logging;
     requires transitive com.sun.jna;
     exports org.xbib.net.socket;
-    exports org.xbib.net.socket.notify;
     exports org.xbib.net.socket.v4;
     exports org.xbib.net.socket.v4.datagram;
     exports org.xbib.net.socket.v4.icmp;
@@ -14,4 +13,5 @@ module org.xbib.net.socket {
     exports org.xbib.net.socket.v6.icmp;
     exports org.xbib.net.socket.v6.ping;
     exports org.xbib.net.socket.v6.unix;
+    exports org.xbib.net.socket.systemd;
 }

net-socket/src/main/java/org/xbib/net/socket/systemd/SystemdJournal.java

@@ -0,0 +1,26 @@
+package org.xbib.net.socket.systemd;
+
+import org.xbib.net.socket.v4.unix.UnixDatagramSocket;
+
+import java.io.IOException;
+import java.net.SocketException;
+import java.util.Objects;
+
+public class SystemdJournal implements AutoCloseable {
+
+    private final UnixDatagramSocket socket;
+
+    public SystemdJournal() throws SocketException {
+        String socketName = Objects.requireNonNull(System.getenv("JOURNAL_SOCKET"));
+        this.socket = new UnixDatagramSocket(socketName);
+    }
+
+    public UnixDatagramSocket getSocket() {
+        return socket;
+    }
+
+    @Override
+    public void close() throws IOException {
+        socket.close();
+    }
+}

net-socket/src/main/java/org/xbib/net/socket/systemd/SystemdNotify.java

@@ -1,4 +1,4 @@
-package org.xbib.net.socket.notify;
+package org.xbib.net.socket.systemd;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;

net-socket/src/main/java/org/xbib/net/socket/v4/unix/UnixDatagramSocket.java

@@ -19,9 +19,9 @@ public class UnixDatagramSocket extends Socket {
 
 	private final CLibrary.SockAddrUn sockAddrUn;
 
-	private InputStream is;
+	private InputStream inputStream;
 
-	private OutputStream os;
+	private OutputStream outputStream;
 
 	public UnixDatagramSocket(String path) throws SocketException {
 		this.library = CLibrary.getInstance();
@@ -31,8 +31,8 @@ public class UnixDatagramSocket extends Socket {
 		if (rc != 0) {
 			throw new SocketException("can not connect");
 		}
-		this.is = new UnixSocketInputStream(this);
-		this.os = new UnixSocketOutputStream(this);
+		this.inputStream = new UnixSocketInputStream(this);
+		this.outputStream = new UnixSocketOutputStream(this);
 	}
 
 	private int connect(int sockfd, CLibrary.SockAddrUn sockaddr, int addrlen) throws SocketException {
@@ -70,22 +70,22 @@ public class UnixDatagramSocket extends Socket {
 
 	@Override
 	public InputStream getInputStream() throws IOException {
-		return is;
+		return inputStream;
 	}
 
 	@Override
 	public OutputStream getOutputStream() throws IOException {
-		return os;
+		return outputStream;
 	}
 
 	@Override
 	public void shutdownInput() throws IOException {
-		is = null;
+		inputStream = null;
 	}
 
 	@Override
 	public void shutdownOutput() throws IOException {
-		os = null;
+		outputStream = null;
 	}
 
 	@Override

net-socket/src/test/java/module-info.java

@@ -2,7 +2,7 @@ module org.xbib.net.socket.test {
     requires java.logging;
     requires transitive org.junit.jupiter.api;
     requires org.xbib.net.socket;
-    exports org.xbib.net.socket.test.notify;
     exports org.xbib.net.socket.test.v4;
     exports org.xbib.net.socket.test.v6;
+    exports org.xbib.net.socket.test.systemd;
 }

net-socket/src/test/java/org/xbib/net/socket/test/systemd/SystemdJournalTest.java

@@ -0,0 +1,22 @@
+package org.xbib.net.socket.test.systemd;
+
+import org.junit.jupiter.api.Test;
+import org.xbib.net.socket.systemd.SystemdJournal;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+public class SystemdJournalTest {
+
+    public SystemdJournalTest() {
+    }
+
+    @Test
+    public void testSystemdJournal() throws IOException {
+        try (SystemdJournal systemdJournal = new SystemdJournal()) {
+            InputStream inputStream = systemdJournal.getSocket().getInputStream();
+            int ch = inputStream.read();
+            System.err.println(ch);
+        };
+    }
+}

net-socket/src/test/java/org/xbib/net/socket/test/systemd/SystemdNotifyTest.java

@@ -1,8 +1,8 @@
-package org.xbib.net.socket.test.notify;
+package org.xbib.net.socket.test.systemd;
 
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.condition.DisabledOnOs;
-import org.xbib.net.socket.notify.SystemdNotify;
+import org.xbib.net.socket.systemd.SystemdNotify;
 
 import java.io.IOException;