sharding helper

shell/utils_sh.js

@@ -0,0 +1,37 @@
+sh = function() { return "try sh.help();" }
+
+
+sh._checkMongos = function() {
+    var x = db.runCommand( "ismaster" );
+    if ( x.msg != "isdbgrid" )
+        throw "not connected to a mongos"
+}
+
+sh._adminCommand = function( cmd ) {
+    sh._checkMongos();
+    var res = db.getSisterDB( "admin" ).runCommand( cmd );
+
+    if ( res == null || ! res.ok ) {
+        print( "command failed: " + tojson( res ) )
+    }
+
+    return res;
+}
+
+sh.help = function() {
+    print( "\tsh.enableSharding(dbname)                 enables sharding on the database dbname" )
+    print( "\tsh.status()                               prints a general overview of the cluster" )
+}
+
+sh.status = function( verbose , configDB ) { 
+    // TODO: move the actual commadn here
+    printShardingStatus( configDB , verbose );
+}
+
+sh.enableSharding = function( dbname ) { 
+    assert( dbname , "need a valid dbname" )
+    sh._adminCommand( { enableSharding : dbname } )
+}
+
+
+