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//
// Basic tests for moveChunk.
//
(function() {
'use strict';
var st = new ShardingTest({mongos:1, shards:2});
var mongos = st.s0;
var kDbName = 'db';
var shards = mongos.getCollection('config.shards').find().toArray();
var shard0 = shards[0]._id;
var shard1 = shards[1]._id;
function testHashed() {
var ns = kDbName + '.fooHashed';
// Errors if either bounds is not a valid shard key
assert.commandWorked(mongos.adminCommand({shardCollection: ns, key: {_id: 'hashed'}}));
var aChunk = mongos.getDB('config').chunks.findOne({_id: RegExp(ns), shard: shard0});
assert(aChunk);
assert.commandFailed(mongos.adminCommand({moveChunk: ns, bounds: [aChunk.min, aChunk.max-1],
to: shard1}));
// Fail if find and bounds are both set.
assert.commandFailed(mongos.adminCommand({moveChunk: ns, find: {_id: 1},
bounds: [aChunk.min, aChunk.max], to: shard1}));
// Using find on collections with hash shard keys should not crash
assert.commandFailed(mongos.adminCommand({moveChunk: ns, find: {_id: 1}, to: shard1}));
// Fail if chunk is already at shard
assert.commandFailed(mongos.adminCommand({moveChunk: ns, bounds: [aChunk.min, aChunk.max],
to: shard0}));
assert.commandWorked(mongos.adminCommand({moveChunk: ns, bounds: [aChunk.min, aChunk.max],
to: shard1}));
assert.eq(0, mongos.getDB('config').chunks.count({_id: aChunk._id, shard: shard0}));
assert.eq(1, mongos.getDB('config').chunks.count({_id: aChunk._id, shard: shard1}));
mongos.getDB(kDbName).fooHashed.drop();
}
function testNotHashed(keyDoc) {
var ns = kDbName + '.foo';
// Fail if find is not a valid shard key.
assert.commandWorked(mongos.adminCommand({shardCollection: ns, key: keyDoc}));
var chunkId = mongos.getDB('config').chunks.findOne({_id: RegExp(ns), shard: shard0})._id;
assert.commandFailed(mongos.adminCommand({moveChunk: ns, find: {xxx: 1}, to: shard1}));
assert.eq(shard0, mongos.getDB('config').chunks.findOne({_id: chunkId}).shard);
assert.commandWorked(mongos.adminCommand({moveChunk: ns, find: keyDoc, to: shard1}));
assert.eq(shard1, mongos.getDB('config').chunks.findOne({_id: chunkId}).shard);
// Fail if to shard does not exists
assert.commandFailed(mongos.adminCommand({moveChunk: ns, find: keyDoc, to: 'WrongShard'}));
// Fail if chunk is already at shard
assert.commandFailed(mongos.adminCommand({moveChunk: ns, find: keyDoc, to: shard1}));
assert.eq(shard1, mongos.getDB('config').chunks.findOne({_id: chunkId}).shard);
mongos.getDB(kDbName).foo.drop();
}
assert.commandWorked(mongos.adminCommand({enableSharding : kDbName}));
st.ensurePrimaryShard(kDbName, shard0);
// Fail if invalid namespace.
var res = assert.commandFailed(mongos.adminCommand({moveChunk: '', find: {_id: 1}, to: shard1}));
assert.eq( res.info);
// Fail if database does not exist.
assert.commandFailed(mongos.adminCommand({moveChunk: 'a.b', find: {_id: 1}, to: shard1}));
// Fail if collection is unsharded.
assert.commandFailed(mongos.adminCommand({moveChunk: kDbName + '.xxx',
find: {_id: 1}, to: shard1}));
testHashed();
testNotHashed({a:1});
testNotHashed({a:1, b:1});
st.stop();
})()
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