// Test resync command:
//   1. Start master/slave deployment.
//   2. Insert a document to seed the oplog.
//   3. Assert that the resync command fails when the slave is caught up to the master.
//   4. Stop the slave.
//   5. Insert enough documents to rotate the oplog.
//   6. Restart the slave.
//   7. Assert the resync command now works on the slave.
//   8. Assert the slave eventually has the same data.
//   9. Assert the slave now rejects the resync command.
//
// This test cannot be run on ephemeral storage engines, because after restarting, at step 6, the
// slave will not have any data and will start an initial sync, rejecting the resync command.
// @tags: [requires_persistence]

soonCount = function( count ) {
    assert.soon( function() {
//                print( "check count" );
//                print( "count: " + s.getDB( baseName ).z.find().count() );
                return s.getDB("foo").a.find().count() == count;
                } );
}

doTest = function(signal, extraOpts) {
    print("signal: "+signal);

    var rt = new ReplTest( "repl2tests" );

    // implicit small oplog makes slave get out of sync
    m = rt.start( true, { oplogSize : "1" } );
    s = rt.start(false, extraOpts);

    am = m.getDB("foo").a

    am.save( { _id: new ObjectId() } );
    soonCount( 1 );
    assert.eq( 0, s.getDB( "admin" ).runCommand( { "resync" : 1 } ).ok );
    rt.stop( false , signal );

    big = new Array( 2000 ).toString();
    for( i = 0; i < 1000; ++i )
        am.save( { _id: new ObjectId(), i: i, b: big } );

    s = rt.start(false, extraOpts, true);

    print("earliest op in master: "+tojson(m.getDB("local").oplog.$main.find().sort({$natural:1}).limit(1).next()));
    print("latest op on slave: "+tojson(s.getDB("local").sources.findOne()));

    assert.soon( function() {
        var result = s.getDB( "admin" ).runCommand( { "resync" : 1 } );
        print("resync says: "+tojson(result));
        return result.ok == 1;
    } );

    soonCount( 1001 );
    assert.automsg( "m.getDB( 'local' ).getCollection( 'oplog.$main' ).stats().size > 0" );

    as = s.getDB("foo").a
    assert.eq( 1, as.find( { i: 0 } ).count() );
    assert.eq( 1, as.find( { i: 999 } ).count() );

    assert.eq( 0, s.getDB( "admin" ).runCommand( { "resync" : 1 } ).ok );

    rt.stop();

}

doTest(15, {"vv": null}); // SIGTERM
doTest(9,  {"vv": null, journal: null });  // SIGKILL