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//
// Upsert behavior tests for sharding
// NOTE: Generic upsert behavior tests belong in the core suite
//
(function() {
'use strict';

var st = new ShardingTest({ shards : 2, mongos : 1 });

var mongos = st.s0;
var admin = mongos.getDB( "admin" );
var shards = mongos.getCollection( "config.shards" ).find().toArray();
var coll = mongos.getCollection( "foo.bar" );

assert( admin.runCommand({ enableSharding : coll.getDB() + "" }).ok );
st.ensurePrimaryShard(coll.getDB().getName(), 'shard0001');

var upsertedResult = function(query, expr) {
    coll.remove({});
    return coll.update(query, expr, { upsert : true });
};

var upsertedField = function(query, expr, fieldName) {
    assert.writeOK(upsertedResult(query, expr));
    return coll.findOne()[fieldName];
};

var upsertedId = function(query, expr) {
    return upsertedField(query, expr, "_id");
};

var upsertedXVal = function(query, expr) {
    return upsertedField(query, expr, "x");
};

st.ensurePrimaryShard(coll.getDB() + "", shards[0]._id);
assert.commandWorked(admin.runCommand({ shardCollection : coll + "", key : { x : 1 } }));
assert.commandWorked(admin.runCommand({ split : coll + "", middle : { x : 0 } }));
assert.commandWorked(admin.runCommand({ moveChunk : coll + "",
                                        find : { x : 0 },
                                        to : shards[1]._id,
                                        _waitForDelete : true }));

st.printShardingStatus();

// upserted update replacement would result in no shard key
assert.writeError(upsertedResult({ x : 1 }, {}));

// updates with upsert must contain shard key in query when $op style
assert.eq(1, upsertedXVal({ x : 1 }, { $set : { a : 1 } }));
assert.eq(1, upsertedXVal({ x : { $eq : 1 } }, { $set : { a : 1 } }));
assert.eq(1, upsertedXVal({ x : { $all : [1] } }, { $set : { a : 1 } }));
assert.eq(1, upsertedXVal({ $and : [{ x : { $eq : 1 } }] }, { $set : { a : 1 } }));
assert.eq(1, upsertedXVal({ $or : [{ x : { $eq : 1 } }] }, { $set : { a : 1 } }));

// shard key not extracted
assert.writeError(upsertedResult({}, { $set : { a : 1, x : 1 } }));
assert.writeError(upsertedResult({ x : { $gt : 1 } }, { $set : { a : 1, x : 1 } }));
assert.writeError(upsertedResult({ x : { $in : [1] } }, { $set : { a : 1, x : 1 } }));

// Shard key type errors
assert.writeError(upsertedResult({ x : undefined }, { $set : { a : 1 } }));
assert.writeError(upsertedResult({ x : [1, 2] }, { $set : { a : 1 } }));
assert.writeError(upsertedResult({ x : { $eq : { $gt : 5 } } }, { $set : { a : 1 } }));
// Regex shard key is not extracted from queries, even exact matches
assert.writeError(upsertedResult({ x : { $eq : /abc/ } }, { $set : { a : 1 } }));

// nested field extraction always fails with non-nested key - like _id, we require setting the
// elements directly
assert.writeError(upsertedResult({ "x.x" : 1 }, { $set : { a : 1 } }));
assert.writeError(upsertedResult({ "x.x" : { $eq : 1 } }, { $set : { a : 1 } }));

coll.drop();

st.ensurePrimaryShard(coll.getDB() + "", shards[0]._id);
assert.commandWorked(admin.runCommand({ shardCollection : coll + "", key : { 'x.x' : 1 } }));
assert.commandWorked( admin.runCommand({ split : coll + "", middle : { 'x.x' : 0 } }));
assert.commandWorked( admin.runCommand({ moveChunk : coll + "",
                                         find : { 'x.x' : 0 },
                                         to : shards[1]._id,
                                         _waitForDelete : true }));

st.printShardingStatus();

// nested field extraction with nested shard key
assert.docEq({ x : 1 }, upsertedXVal({ "x.x" : 1 }, { $set : { a : 1 } }));
assert.docEq({ x : 1 }, upsertedXVal({ "x.x" : { $eq : 1 } }, { $set : { a : 1 } }));
assert.docEq({ x : 1 }, upsertedXVal({ "x.x" : { $all : [1] } }, { $set : { a : 1 } }));
assert.docEq({ x : 1 }, upsertedXVal({ $and : [{ "x.x" : { $eq : 1 } }] }, { $set : { a : 1 } }));
assert.docEq({ x : 1 }, upsertedXVal({ $or : [{ "x.x" : { $eq : 1 } }] }, { $set : { a : 1 } }));

// Can specify siblings of nested shard keys
assert.docEq({ x : 1, y : 1 }, upsertedXVal({ "x.x" : 1, "x.y" : 1 }, { $set : { a : 1 } }));
assert.docEq({ x : 1, y : { z : 1 } },
             upsertedXVal({ "x.x" : 1, "x.y.z" : 1 }, { $set : { a : 1 } }));

// No arrays at any level
assert.writeError(upsertedResult({ "x.x" : [] }, { $set : { a : 1 } }));
assert.writeError(upsertedResult({ x : { x : [] } }, { $set : { a : 1 } }));
assert.writeError(upsertedResult({ x : [{ x : 1 }] }, { $set : { a : 1 } }));

// Can't set sub-fields of nested key
assert.writeError(upsertedResult({ "x.x.x" : { $eq : 1 } }, { $set : { a : 1 } }));

st.stop();

})();