1 files changed, 340 insertions, 0 deletions
diff --git a/src/mongo/gotools/test/legacy28/jstests/libs/test_background_ops.js b/src/mongo/gotools/test/legacy28/jstests/libs/test_background_ops.js
new file mode 100644
index 00000000000..b3f6f593947
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+++ b/src/mongo/gotools/test/legacy28/jstests/libs/test_background_ops.js
@@ -0,0 +1,340 @@
+//
+// Utilities related to background operations while other operations are working
+//
+
+/**
+ * Allows synchronization between background ops and the test operations
+ */
+var waitForLock = function( mongo, name ){
+    
+    var ts = new ObjectId()
+    var lockColl = mongo.getCollection( "config.testLocks" )
+    
+    lockColl.update({ _id : name, state : 0 }, { $set : { state : 0 } }, true)
+    
+    //
+    // Wait until we can set the state to 1 with our id
+    //
+    
+    var startTime = new Date().getTime()
+    
+    assert.soon( function() {
+        lockColl.update({ _id : name, state : 0 }, { $set : { ts : ts, state : 1 } })
+        var gleObj = lockColl.getDB().getLastErrorObj()
+        
+        if( new Date().getTime() - startTime > 20 * 1000 ){
+            print( "Waiting for..." )
+            printjson( gleObj )
+            printjson( lockColl.findOne() )
+            printjson( ts )
+        }
+        
+        return gleObj.n == 1 || gleObj.updatedExisting
+    }, "could not acquire lock", 30 * 1000, 100 )
+    
+    print( "Acquired lock " + tojson( { _id : name, ts : ts } ) + " curr : " + 
+           tojson( lockColl.findOne({ _id : name }) ) )
+    
+    // Set the state back to 0
+    var unlock = function(){
+        print( "Releasing lock " + tojson( { _id : name, ts : ts } ) + " curr : " + 
+                tojson( lockColl.findOne({ _id : name }) ) )
+        lockColl.update({ _id : name, ts : ts }, { $set : { state : 0 } })
+    }
+    
+    // Return an object we can invoke unlock on
+    return { unlock : unlock }
+}
+
+/**
+ * Allows a test or background op to say it's finished
+ */
+var setFinished = function( mongo, name, finished ){
+    if( finished || finished == undefined )
+        mongo.getCollection( "config.testFinished" ).update({ _id : name }, { _id : name }, true )
+    else
+        mongo.getCollection( "config.testFinished" ).remove({ _id : name })
+}
+
+/**
+ * Checks whether a test or background op is finished
+ */
+var isFinished = function( mongo, name ){
+    return mongo.getCollection( "config.testFinished" ).findOne({ _id : name }) != null 
+}
+
+/**
+ * Sets the result of a background op
+ */
+var setResult = function( mongo, name, result, err ){
+    mongo.getCollection( "config.testResult" ).update({ _id : name }, { _id : name, result : result, err : err }, true )
+}
+
+/**
+ * Gets the result for a background op
+ */
+var getResult = function( mongo, name ){
+    return mongo.getCollection( "config.testResult" ).findOne({ _id : name })
+}
+
+/**
+ * Overrides the parallel shell code in mongo
+ */
+function startParallelShell( jsCode, port ){
+    
+    var x;
+    if ( port ) {
+        x = startMongoProgramNoConnect( "mongo" , "--port" , port , "--eval" , jsCode );
+    } else {
+        x = startMongoProgramNoConnect( "mongo" , "--eval" , jsCode , db ? db.getMongo().host : null );        
+    }
+    
+    return function(){
+        jsTestLog( "Waiting for shell " + x + "..." )
+        waitProgram( x );
+        jsTestLog( "Shell " + x + " finished." )
+    };
+}
+
+startParallelOps = function( mongo, proc, args, context ){
+                 
+    var procName = proc.name + "-" + new ObjectId()
+    var seed = new ObjectId( new ObjectId().valueOf().split("").reverse().join("") )
+                                                                           .getTimestamp().getTime()
+       
+    // Make sure we aren't finished before we start
+    setFinished( mongo, procName, false )
+    setResult( mongo, procName, undefined, undefined )
+    
+    // TODO: Make this a context of its own
+    var procContext = { procName : procName,
+                        seed : seed,
+                        waitForLock : waitForLock,
+                        setFinished : setFinished,
+                        isFinished : isFinished,
+                        setResult : setResult,
+                        
+                        setup : function( context, stored ){
+                            
+                            waitForLock = function(){
+                                return context.waitForLock( db.getMongo(), context.procName )
+                            }
+                            setFinished = function( finished ){
+                                return context.setFinished( db.getMongo(), context.procName, finished )
+                            }
+                            isFinished = function(){
+                                return context.isFinished( db.getMongo(), context.procName )
+                            }
+                            setResult = function( result, err ){
+                                return context.setResult( db.getMongo(), context.procName, result, err )
+                            }
+                        }}
+                    
+    var bootstrapper = function( stored ){
+                
+        var procContext = stored.procContext        
+        procContext.setup( procContext, stored )
+        
+        var contexts = stored.contexts                                            
+        eval( "contexts = " + contexts )
+        
+        for( var i = 0; i < contexts.length; i++ ){
+            if( typeof( contexts[i] ) != "undefined" ){                
+                // Evaluate all contexts
+                contexts[i]( procContext )
+            }
+        }
+        
+        var operation = stored.operation
+        eval( "operation = " + operation )
+        
+        var args = stored.args
+        eval( "args = " + args )
+        
+        result = undefined
+        err = undefined
+        
+        try{
+            result = operation.apply( null, args )
+        }
+        catch( e ){
+            err = e 
+        }
+        
+        setResult( result, err )
+    }
+    
+    var contexts = [ RandomFunctionContext, context ]
+    
+    var testDataColl = mongo.getCollection( "config.parallelTest" )
+    
+    testDataColl.insert({ _id : procName,
+                          bootstrapper : tojson( bootstrapper ),
+                          operation : tojson( proc ),
+                          args : tojson( args ),
+                          procContext : procContext,
+                          contexts : tojson( contexts ) })
+                          
+    assert.eq( null, testDataColl.getDB().getLastError() )
+    
+    var bootstrapStartup =
+        "{ var procName = '" + procName + "'; " +    
+          "var stored = db.getMongo().getCollection( '" + testDataColl + "' )" + 
+                         ".findOne({ _id : procName }); " +
+          "var bootstrapper = stored.bootstrapper; " +
+          "eval( 'bootstrapper = ' + bootstrapper ); " +
+          "bootstrapper( stored ); " +
+        "}"
+    
+          
+    var oldDB = db
+    db = mongo.getDB( "test" )
+    
+    jsTest.log( "Starting " + proc.name + " operations..." )
+    
+    var rawJoin = startParallelShell( bootstrapStartup )
+                               
+    db = oldDB
+          
+    
+    var join = function(){ 
+        setFinished( mongo, procName, true )
+        
+        rawJoin();
+        result = getResult( mongo, procName )
+                           
+        assert.neq( result, null )                 
+                           
+        if( result.err ) throw Error("Error in parallel ops " + procName + " : "
+                                                        + tojson( result.err ) )
+                                                        
+        else return result.result
+    }
+    
+    join.isFinished = function(){
+        return isFinished( mongo, procName )
+    }
+    
+    join.setFinished = function( finished ){
+        return setFinished( mongo, procName, finished )
+    }
+    
+    join.waitForLock = function( name ){
+        return waitForLock( mongo, name )
+    }
+    
+    return join
+}
+
+var RandomFunctionContext = function( context ){
+    
+    Random.srand( context.seed );
+    
+    Random.randBool = function(){ return Random.rand() > 0.5 }
+    
+    Random.randInt = function( min, max ){ 
+        
+        if( max == undefined ){
+            max = min
+            min = 0
+        }
+        
+        return min + Math.floor( Random.rand() * max ) 
+    }
+    
+    Random.randShardKey = function(){
+        
+        var numFields = 2 //Random.randInt(1, 3)
+        
+        var key = {}
+        for( var i = 0; i < numFields; i++ ){
+            var field = String.fromCharCode( "a".charCodeAt() + i )
+            key[ field ] = 1
+        }
+        
+        return key
+    }
+    
+    Random.randShardKeyValue = function( shardKey ){
+        
+        var keyValue = {}
+        for( field in shardKey ){
+            keyValue[ field ] = Random.randInt(1, 100)
+        }
+        
+        return keyValue
+    }
+    
+    Random.randCluster = function(){
+
+        var numShards = 2 //Random.randInt( 1, 10 )
+        var rs = false //Random.randBool()
+        var st = new ShardingTest({ shards : numShards, 
+                                    mongos : 4, 
+                                    other : { separateConfig : true, rs : rs } })
+        
+        return st
+    }
+}
+
+
+//
+// Some utility operations
+//
+
+function moveOps( collName, options ){
+    
+    options = options || {}
+    
+    var admin = db.getMongo().getDB( "admin" )
+    var config = db.getMongo().getDB( "config" )
+    var shards = config.shards.find().toArray()
+    var shardKey = config.collections.findOne({ _id : collName }).key
+    
+    while( ! isFinished() ){
+        
+        var findKey = Random.randShardKeyValue( shardKey )
+        var toShard = shards[ Random.randInt( shards.length ) ]._id
+        
+        try {
+            printjson( admin.runCommand({ moveChunk : collName, 
+                                          find : findKey,
+                                          to : toShard }) )
+        }
+        catch( e ){
+            printjson( e )
+        }
+        
+        sleep( 1000 )
+    }
+    
+    jsTest.log( "Stopping moveOps..." )
+}
+
+function splitOps( collName, options ){
+        
+    options = options || {}
+    
+    var admin = db.getMongo().getDB( "admin" )
+    var config = db.getMongo().getDB( "config" )
+    var shards = config.shards.find().toArray()
+    var shardKey = config.collections.findOne({ _id : collName }).key
+    
+    while( ! isFinished() ){
+        
+        var middleKey = Random.randShardKeyValue( shardKey )
+        
+        try {
+            printjson( admin.runCommand({ split : collName, 
+                                          middle : middleKey }) )
+        }
+        catch( e ){
+            printjson( e )
+        }
+        
+        sleep( 1000 )
+    }
+    
+    jsTest.log( "Stopping splitOps..." )
+}
+