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path: root/jstests/sharding/shard_aware_primary_failover.js
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/**
 * Test that a new primary that gets elected will properly perform shard initialization.
 */
(function() {
"use strict";

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

var replTest = new ReplSetTest({nodes: 3});
replTest.startSet({shardsvr: ''});

var nodes = replTest.nodeList();
replTest.initiate({
    _id: replTest.name,
    members: [
        {_id: 0, host: nodes[0]},
        {_id: 1, host: nodes[1]},
        {_id: 2, host: nodes[2], arbiterOnly: true}
    ]
});

var primaryConn = replTest.getPrimary();

var shardIdentityDoc = {
    _id: 'shardIdentity',
    configsvrConnectionString: st.configRS.getURL(),
    shardName: 'newShard',
    clusterId: ObjectId()
};

// Simulate the upsert that is performed by a config server on addShard.
var shardIdentityQuery = {
    _id: shardIdentityDoc._id,
    shardName: shardIdentityDoc.shardName,
    clusterId: shardIdentityDoc.clusterId
};
var shardIdentityUpdate = {
    $set: {configsvrConnectionString: shardIdentityDoc.configsvrConnectionString}
};
assert.commandWorked(primaryConn.getDB('admin').system.version.update(
    shardIdentityQuery, shardIdentityUpdate, {upsert: true, writeConcern: {w: 'majority'}}));

replTest.stopMaster();
replTest.waitForMaster(30000);

primaryConn = replTest.getPrimary();

var res = primaryConn.getDB('admin').runCommand({shardingState: 1});

assert(res.enabled);
assert.eq(shardIdentityDoc.configsvrConnectionString, res.configServer);
assert.eq(shardIdentityDoc.shardName, res.shardName);
assert.eq(shardIdentityDoc.clusterId, res.clusterId);

replTest.stopSet();

st.stop();
})();