Refactor output writers

[signal-cli] / src / main / java / org / asamk / signal / commands / DaemonCommand.java

diff --git a/src/main/java/org/asamk/signal/commands/DaemonCommand.java b/src/main/java/org/asamk/signal/commands/DaemonCommand.java
index c5ee2edce8304a8975432437c38186d3eda531c1..f7d8b12e2e088a4e476c1348fb45e5ea51e81c85 100644 (file)
--- a/src/main/java/org/asamk/signal/commands/DaemonCommand.java
+++ b/src/main/java/org/asamk/signal/commands/DaemonCommand.java
@@ -4,77 +4,134 @@ import net.sourceforge.argparse4j.impl.Arguments;
 import net.sourceforge.argparse4j.inf.Namespace;
 import net.sourceforge.argparse4j.inf.Subparser;
 
 import net.sourceforge.argparse4j.inf.Namespace;
 import net.sourceforge.argparse4j.inf.Subparser;
 

+import org.asamk.signal.DbusConfig;

 import org.asamk.signal.DbusReceiveMessageHandler;
 import org.asamk.signal.JsonDbusReceiveMessageHandler;
 import org.asamk.signal.DbusReceiveMessageHandler;
 import org.asamk.signal.JsonDbusReceiveMessageHandler;

+import org.asamk.signal.JsonWriter;
+import org.asamk.signal.OutputType;
+import org.asamk.signal.OutputWriter;
+import org.asamk.signal.PlainTextWriter;
+import org.asamk.signal.commands.exceptions.CommandException;
+import org.asamk.signal.commands.exceptions.UnexpectedErrorException;

 import org.asamk.signal.dbus.DbusSignalImpl;
 import org.asamk.signal.manager.Manager;
 import org.freedesktop.dbus.connections.impl.DBusConnection;
 import org.freedesktop.dbus.exceptions.DBusException;
 import org.asamk.signal.dbus.DbusSignalImpl;
 import org.asamk.signal.manager.Manager;
 import org.freedesktop.dbus.connections.impl.DBusConnection;
 import org.freedesktop.dbus.exceptions.DBusException;

+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;

 
 import java.io.IOException;
 
 import java.io.IOException;

+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;

 import java.util.concurrent.TimeUnit;
 
 import java.util.concurrent.TimeUnit;
 

-import static org.asamk.signal.DbusConfig.SIGNAL_BUSNAME;
-import static org.asamk.signal.DbusConfig.SIGNAL_OBJECTPATH;
-import static org.asamk.signal.util.ErrorUtils.handleAssertionError;
+public class DaemonCommand implements MultiLocalCommand {

 
 

-public class DaemonCommand implements LocalCommand {
+    private final static Logger logger = LoggerFactory.getLogger(DaemonCommand.class);
+    private final OutputWriter outputWriter;

 
 

-    @Override
-    public void attachToSubparser(final Subparser subparser) {
+    public static void attachToSubparser(final Subparser subparser) {
+        subparser.help("Run in daemon mode and provide an experimental dbus interface.");

         subparser.addArgument("--system")
                 .action(Arguments.storeTrue())
                 .help("Use DBus system bus instead of user bus.");
         subparser.addArgument("--ignore-attachments")
                 .help("Don’t download attachments of received messages.")
                 .action(Arguments.storeTrue());
         subparser.addArgument("--system")
                 .action(Arguments.storeTrue())
                 .help("Use DBus system bus instead of user bus.");
         subparser.addArgument("--ignore-attachments")
                 .help("Don’t download attachments of received messages.")
                 .action(Arguments.storeTrue());

-        subparser.addArgument("--json")
-                .help("Output received messages in json format, one json object per line.")
-                .action(Arguments.storeTrue());
+    }
+
+    public DaemonCommand(final OutputWriter outputWriter) {
+        this.outputWriter = outputWriter;

     }
 
     @Override
     }
 
     @Override

-    public int handleCommand(final Namespace ns, final Manager m) {
-        DBusConnection conn = null;
-        try {
+    public Set<OutputType> getSupportedOutputTypes() {
+        return Set.of(OutputType.PLAIN_TEXT, OutputType.JSON);
+    }
+
+    @Override
+    public void handleCommand(final Namespace ns, final Manager m) throws CommandException {
+        boolean ignoreAttachments = ns.getBoolean("ignore-attachments");
+
+        DBusConnection.DBusBusType busType;
+        if (ns.getBoolean("system")) {
+            busType = DBusConnection.DBusBusType.SYSTEM;
+        } else {
+            busType = DBusConnection.DBusBusType.SESSION;
+        }
+
+        try (var conn = DBusConnection.getConnection(busType)) {
+            var objectPath = DbusConfig.getObjectPath();
+            var t = run(conn, objectPath, m, ignoreAttachments);
+
+            conn.requestBusName(DbusConfig.getBusname());
+

             try {
             try {

-                DBusConnection.DBusBusType busType;
-                if (ns.getBoolean("system")) {
-                    busType = DBusConnection.DBusBusType.SYSTEM;
-                } else {
-                    busType = DBusConnection.DBusBusType.SESSION;
-                }
-                conn = DBusConnection.getConnection(busType);
-                conn.exportObject(SIGNAL_OBJECTPATH, new DbusSignalImpl(m));
-                conn.requestBusName(SIGNAL_BUSNAME);
-            } catch (UnsatisfiedLinkError e) {
-                System.err.println("Missing native library dependency for dbus service: " + e.getMessage());
-                return 1;
-            } catch (DBusException e) {
-                e.printStackTrace();
-                return 2;
+                t.join();
+            } catch (InterruptedException ignored) {

             }
             }

-            boolean ignoreAttachments = ns.getBoolean("ignore_attachments");
-            try {
-                m.receiveMessages(1,
-                        TimeUnit.HOURS,
-                        false,
-                        ignoreAttachments,
-                        ns.getBoolean("json")
-                                ? new JsonDbusReceiveMessageHandler(m, conn, SIGNAL_OBJECTPATH)
-                                : new DbusReceiveMessageHandler(m, conn, SIGNAL_OBJECTPATH));
-                return 0;
-            } catch (IOException e) {
-                System.err.println("Error while receiving messages: " + e.getMessage());
-                return 3;
-            } catch (AssertionError e) {
-                handleAssertionError(e);
-                return 1;
+        } catch (DBusException | IOException e) {
+            logger.error("Dbus command failed", e);
+            throw new UnexpectedErrorException("Dbus command failed");
+        }
+    }
+
+    @Override
+    public void handleCommand(final Namespace ns, final List<Manager> managers) throws CommandException {
+        boolean ignoreAttachments = ns.getBoolean("ignore-attachments");
+
+        DBusConnection.DBusBusType busType;
+        if (ns.getBoolean("system")) {
+            busType = DBusConnection.DBusBusType.SYSTEM;
+        } else {
+            busType = DBusConnection.DBusBusType.SESSION;
+        }
+
+        try (var conn = DBusConnection.getConnection(busType)) {
+            var receiveThreads = new ArrayList<Thread>();
+            for (var m : managers) {
+                var objectPath = DbusConfig.getObjectPath(m.getUsername());
+                var thread = run(conn, objectPath, m, ignoreAttachments);
+                receiveThreads.add(thread);

             }
             }

-        } finally {
-            if (conn != null) {
-                conn.disconnect();
+
+            conn.requestBusName(DbusConfig.getBusname());
+
+            for (var t : receiveThreads) {
+                try {
+                    t.join();
+                } catch (InterruptedException ignored) {
+                }

             }
             }

+        } catch (DBusException | IOException e) {
+            logger.error("Dbus command failed", e);
+            throw new UnexpectedErrorException("Dbus command failed");

         }
     }
         }
     }

+
+    private Thread run(
+            DBusConnection conn, String objectPath, Manager m, boolean ignoreAttachments
+    ) throws DBusException {
+        conn.exportObject(objectPath, new DbusSignalImpl(m));
+
+        final var thread = new Thread(() -> {
+            while (true) {
+                try {
+                    final var receiveMessageHandler = outputWriter instanceof JsonWriter
+                            ? new JsonDbusReceiveMessageHandler(m, (JsonWriter) outputWriter, conn, objectPath)
+                            : new DbusReceiveMessageHandler(m, (PlainTextWriter) outputWriter, conn, objectPath);
+                    m.receiveMessages(1, TimeUnit.HOURS, false, ignoreAttachments, receiveMessageHandler);
+                } catch (IOException e) {
+                    logger.warn("Receiving messages failed, retrying", e);
+                }
+            }
+        });
+
+        logger.info("Exported dbus object: " + objectPath);
+
+        thread.start();
+
+        return thread;
+    }

 }
 }