/**
 * Tests that secondaries participate in the shard versioning protocol.
 */
import {profilerHasSingleMatchingEntryOrThrow} from "jstests/libs/profiler.js";
import {ShardingTest} from "jstests/libs/shardingtest.js";

// Set the secondaries to priority 0 and votes 0 to prevent the primaries from stepping down.
let rsOpts = {nodes: [{}, {rsConfig: {priority: 0}}]};
let st = new ShardingTest({mongos: 2, shards: {rs0: rsOpts, rs1: rsOpts}});

assert.commandWorked(st.s0.adminCommand({enableSharding: "test", primaryShard: st.shard0.shardName}));

assert.commandWorked(st.s0.adminCommand({shardCollection: "test.foo", key: {x: 1}}));
assert.commandWorked(st.s0.adminCommand({split: "test.foo", middle: {x: 0}}));

let freshMongos = st.s0;
let staleMongos = st.s1;

jsTest.log("do insert from stale mongos to make it load the routing table before the move");
assert.commandWorked(staleMongos.getDB("test").foo.insert({x: 1}));

jsTest.log("do moveChunk from fresh mongos");
assert.commandWorked(
    freshMongos.adminCommand({
        moveChunk: "test.foo",
        find: {x: 0},
        to: st.shard1.shardName,
    }),
);

// Turn on system profiler on secondaries to collect data on all future operations on the db.
let donorShardSecondary = st.rs0.getSecondary();
let recipientShardSecondary = st.rs1.getSecondary();
assert.commandWorked(donorShardSecondary.getDB("test").setProfilingLevel(2));
assert.commandWorked(recipientShardSecondary.getDB("test").setProfilingLevel(2));

// Use the mongos with the stale routing table to send read requests to the secondaries. 'local'
// read concern level must be specified in the request because secondaries default to
// 'available', which doesn't participate in the version protocol. Check that the donor shard
// returns a stale shardVersion error, which provokes mongos to refresh its routing table and
// re-target; that the recipient shard secondary refreshes its routing table on hearing the
// fresh version from mongos; and that the recipient shard secondary returns the results.

jsTest.log("do secondary read from stale mongos");
let res = staleMongos.getDB("test").runCommand({
    count: "foo",
    query: {x: 1},
    $readPreference: {mode: "secondary"},
    readConcern: {"level": "local"},
});
assert(res.ok);
assert.eq(1, res.n, tojson(res));

// Check that the donor shard secondary returned stale shardVersion.
profilerHasSingleMatchingEntryOrThrow({
    profileDB: donorShardSecondary.getDB("test"),
    filter: {
        "ns": "test.foo",
        "command.count": "foo",
        "command.query": {x: 1},
        "command.shardVersion": {"$exists": true},
        "command.$readPreference": {"mode": "secondary"},
        "command.readConcern": {"level": "local"},
        "errCode": ErrorCodes.StaleConfig,
    },
});

// The recipient shard secondary will also return stale shardVersion once, even though the
// mongos is fresh, because the recipient shard secondary was stale.
profilerHasSingleMatchingEntryOrThrow({
    profileDB: donorShardSecondary.getDB("test"),
    filter: {
        "ns": "test.foo",
        "command.count": "foo",
        "command.query": {x: 1},
        "command.shardVersion": {"$exists": true},
        "command.$readPreference": {"mode": "secondary"},
        "command.readConcern": {"level": "local"},
        "errCode": ErrorCodes.StaleConfig,
    },
});

// Check that the recipient shard secondary received the query and returned results.
profilerHasSingleMatchingEntryOrThrow({
    profileDB: recipientShardSecondary.getDB("test"),
    filter: {
        "ns": "test.foo",
        "command.count": "foo",
        "command.query": {x: 1},
        "command.shardVersion": {"$exists": true},
        "command.$readPreference": {"mode": "secondary"},
        "command.readConcern": {"level": "local"},
        "errCode": {"$exists": false},
    },
});

st.stop();