Pass GerritServer down through SSH command factory

This avoids trying to do a static instance member lookup.

Signed-off-by: Shawn O. Pearce <sop@google.com>

src/main/java/com/google/gerrit/server/ssh/AbstractCommand.java

@@ -22,7 +22,6 @@ import com.google.gerrit.client.reviewdb.ReviewDb;
 import com.google.gerrit.client.rpc.Common;
 import com.google.gerrit.server.BaseServiceImplementation;
 import com.google.gerrit.server.GerritServer;
-import com.google.gwtjsonrpc.server.XsrfException;
 import com.google.gwtorm.client.OrmException;
 
 import org.apache.sshd.common.SshException;
@@ -60,6 +59,7 @@ abstract class AbstractCommand implements Command, SessionAware {
   protected OutputStream err;
   protected ExitCallback exit;
   protected ServerSession session;
+  protected GerritServer server; 
   protected ReviewDb db;
 
   private String name;
@@ -94,14 +94,8 @@ abstract class AbstractCommand implements Command, SessionAware {
     return new PrintWriter(new BufferedWriter(new OutputStreamWriter(o, ENC)));
   }
 
-  protected GerritServer getGerritServer() throws Failure {
-    try {
-      return GerritServer.getInstance();
-    } catch (OrmException e) {
-      throw new Failure(128, "fatal: Gerrit is not available", e);
-    } catch (XsrfException e) {
-      throw new Failure(128, "fatal: Gerrit is not available", e);
-    }
+  protected GerritServer getGerritServer() {
+    return server;
   }
 
   protected ReviewDb openReviewDb() throws Failure {

src/main/java/com/google/gerrit/server/ssh/GerritCommandFactory.java

@@ -14,15 +14,19 @@
 
 package com.google.gerrit.server.ssh;
 
+import com.google.gerrit.server.GerritServer;
+
 import org.apache.sshd.server.CommandFactory;
 
 import java.util.HashMap;
 
 /** Creates a command implementation based on the client input. */
 class GerritCommandFactory implements CommandFactory {
+  private final GerritServer server;
   private final HashMap<String, Factory> commands;
 
-  GerritCommandFactory() {
+  GerritCommandFactory(final GerritServer gs) {
+    server = gs;
     commands = new HashMap<String, Factory>();
 
     commands.put("gerrit-upload-pack", new Factory() {
@@ -103,6 +107,7 @@ class GerritCommandFactory implements CommandFactory {
     }
 
     final AbstractCommand c = create(cmd);
+    c.server = server;
     c.setCommandLine(cmd, args);
     return c;
   }

src/main/java/com/google/gerrit/server/ssh/GerritSshDaemon.java

@@ -234,7 +234,7 @@ public class GerritSshDaemon extends SshServer {
     initCompression();
     initUserAuth(srv);
     setKeyPairProvider(initHostKey(srv));
-    setCommandFactory(new GerritCommandFactory());
+    setCommandFactory(new GerritCommandFactory(srv));
     setShellFactory(new NoShell());
     setSessionFactory(new SessionFactory() {
       @Override