// When a migration between shard0 and shard1 is about to enter the commit phase, a commit command
// with different migration session ID is rejected.

load('./jstests/libs/chunk_manipulation_util.js');

(function() {
"use strict";

var staticMongod = MongoRunner.runMongod({});  // For startParallelOps.

var st = new ShardingTest({shards: 2});

var mongos = st.s0, admin = mongos.getDB('admin'), dbName = "testDB", ns1 = dbName + ".foo",
    coll1 = mongos.getCollection(ns1), shard0 = st.shard0, shard1 = st.shard1,
    shard0Coll1 = shard0.getCollection(ns1), shard1Coll1 = shard1.getCollection(ns1);

assert.commandWorked(admin.runCommand({enableSharding: dbName}));
st.ensurePrimaryShard(dbName, st.shard0.shardName);
assert.commandWorked(admin.runCommand({shardCollection: ns1, key: {a: 1}}));
assert.commandWorked(coll1.insert({a: 0}));
assert.eq(1, shard0Coll1.find().itcount());
assert.eq(0, shard1Coll1.find().itcount());
assert.eq(1, coll1.find().itcount());

// Shard0:
//      coll1:     [-inf, +inf)
// Shard1:

jsTest.log("Set up complete, now proceeding to test that migration interruption fails.");

// Start a migration between shard0 and shard1 on coll1, pause in steady state before commit.
pauseMoveChunkAtStep(shard0, moveChunkStepNames.reachedSteadyState);
var joinMoveChunk = moveChunkParallel(staticMongod,
                                      st.s0.host,
                                      {a: 0},
                                      null,
                                      coll1.getFullName(),
                                      st.shard1.shardName,
                                      true /**Parallel should expect success */);
waitForMoveChunkStep(shard0, moveChunkStepNames.reachedSteadyState);

jsTest.log('Sending false commit command....');
assert.commandFailed(
    shard1.adminCommand({'_recvChunkCommit': 1, 'sessionId': "fake-migration-session-id"}));

jsTest.log("Checking migration recipient is still in steady state, waiting for commit....");
var res = shard1.adminCommand('_recvChunkStatus');
assert.commandWorked(res);
assert.eq(true, res.state === "steady", "False commit command succeeded.");

// Finish migration.
unpauseMoveChunkAtStep(shard0, moveChunkStepNames.reachedSteadyState);
joinMoveChunk();

assert.eq(0, shard0Coll1.find().itcount());
assert.eq(1, shard1Coll1.find().itcount());

st.stop();
MongoRunner.stopMongod(staticMongod);
})();