// Tests that the "failCommand" failpoint ignores commands from internal clients: SERVER-34943.
(function() {
"use strict";

const st = new ShardingTest({shards: 1});
const mongosDB = st.s0.getDB("test_failcommand_ignores_internal");

// Enough documents for three getMores.
assert.commandWorked(mongosDB.collection.insertMany([{}, {}, {}]));
const findReply = assert.commandWorked(mongosDB.runCommand({find: "collection", batchSize: 0}));
const cursorId = findReply.cursor.id;

// Test failing "getMore" twice with a particular error code.
assert.commandWorked(mongosDB.adminCommand({
    configureFailPoint: "failCommand",
    mode: {times: 2},
    data: {errorCode: ErrorCodes.BadValue, failCommands: ["getMore"]}
}));
const getMore = {
    getMore: cursorId,
    collection: "collection",
    batchSize: 1
};
assert.commandFailedWithCode(mongosDB.runCommand(getMore), ErrorCodes.BadValue);
assert.commandFailedWithCode(mongosDB.runCommand(getMore), ErrorCodes.BadValue);
assert.commandWorked(mongosDB.runCommand(getMore));

// Setting a failpoint for "distinct" on a shard has no effect on mongos.
assert.commandWorked(st.shard0.getDB("admin").runCommand({
    configureFailPoint: "failCommand",
    mode: "alwaysOn",
    data: {errorCode: ErrorCodes.BadValue, failCommands: ["distinct"]}
}));
const distinct = {
    distinct: "collection",
    key: "x"
};
assert.commandFailedWithCode(
    st.shard0.getDB("test_failcommand_ignores_internal").runCommand(distinct), ErrorCodes.BadValue);
assert.commandWorked(mongosDB.runCommand(distinct));
assert.commandWorked(
    st.shard0.getDB("admin").runCommand({configureFailPoint: "failCommand", mode: "off"}));

// Setting a failpoint for "distinct" on a shard with failInternalCommands DOES affect mongos.
assert.commandWorked(st.shard0.getDB("admin").runCommand({
    configureFailPoint: "failCommand",
    mode: "alwaysOn",
    data: {errorCode: ErrorCodes.BadValue, failCommands: ["distinct"], failInternalCommands: true}
}));
assert.commandFailedWithCode(mongosDB.runCommand(distinct), ErrorCodes.BadValue);
assert.commandFailedWithCode(
    st.shard0.getDB("test_failcommand_ignores_internal").runCommand(distinct), ErrorCodes.BadValue);

st.stop();
}());