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import { isAfter } from "date-fns";
import { config } from "shared/config";
import { MongoDbError } from "shared/types/api/errors";
import { Result, makeSuccessResult } from "shared/utils/result";
import { runAssignment } from "server/features/assignment/run-assignment/runAssignment";
import { updateProgramItems } from "server/features/program-item/programItemService";
import {
acquireAssignmentLock,
getLatestServerStartTime,
releaseAssignmentLock,
saveSettings,
setAssignmentLastRun,
setProgramUpdateLastRun,
} from "server/features/settings/settingsRepository";
import { logger } from "server/utils/logger";
const cronJobs: Cron[] = [];
let instanceStartTime = "";
export const setLatestServerStartTime = async (): Promise<
Result<void, MongoDbError>
> => {
instanceStartTime = new Date().toISOString();
logger.info(`Set latestServerStartTime ${instanceStartTime}`);
const settingsResult = await saveSettings({
latestServerStartTime: instanceStartTime,
});
Iif (!settingsResult.ok) {
return settingsResult;
}
return makeSuccessResult();
};
export const startCronJobs = async (): Promise<void> => {
const {
autoUpdateProgramEnabled,
programUpdateInterval,
autoAssignAttendeesEnabled,
autoAssignInterval,
} = config.server();
// Save latest server instance start time to limit running cronjobs to latest started instance
const latestServerStartResult = await setLatestServerStartTime();
Iif (!latestServerStartResult.ok) {
// eslint-disable-next-line no-restricted-syntax -- Server startup
throw new Error(
`Error setting latestServerStartTime at server start: ${latestServerStartResult.error}`,
);
}
if (autoUpdateProgramEnabled) {
logger.info("Start cronjob: program auto update");
const autoUpdateProgramItemsJob = new Cron(
programUpdateInterval,
{
name: "autoUpdateProgramItems",
protect: protectCallback,
catch: errorHandler,
},
autoUpdateProgramItems,
);
cronJobs.push(autoUpdateProgramItemsJob);
} else {
logger.info("Cronjob disabled in config: program auto update");
}
if (autoAssignAttendeesEnabled) {
logger.info("Start cronjob: automatic attendee assignment");
const autoAssignAttendeesJob = new Cron(
autoAssignInterval,
{
name: "autoAssignAttendees",
protect: protectCallback,
catch: errorHandler,
},
autoAssignAttendees,
);
cronJobs.push(autoAssignAttendeesJob);
} else {
logger.info("Cronjob disabled in config: automatic attendee assignment");
}
};
export const stopCronJobs = (): void => {
for (const job of cronJobs) {
job.stop();
}
logger.info("CronJobs stopped");
};
// A deploy starts a replacement instance which overwrites latestServerStartTime, so the
// superseded instance seeing a newer time is expected: stop its cronjobs and let it wait for
// termination. A missing or older stored time means the settings data was lost or rewound,
// which shouldn't happen and is logged as an error.
const isLatestServerInstance = async (): Promise<boolean> => {
logger.info(
`Check if latest running server instance with start time ${instanceStartTime}`,
);
const dbLatestStartTimeResult = await getLatestServerStartTime();
Iif (!dbLatestStartTimeResult.ok) {
logger.error(
new Error(
`Cronjobs: Failed to get latest server start time: ${dbLatestStartTimeResult.error}`,
),
);
return false;
}
const dbLatestStartTime = dbLatestStartTimeResult.value;
if (dbLatestStartTime === instanceStartTime) {
logger.info("Latest server start time found, is latest");
return true;
}
if (isAfter(new Date(dbLatestStartTime), new Date(instanceStartTime))) {
// TODO: Expected during deploys, change to info level once stopping cronjobs is verified to work
logger.error(
new Error(
"Cronjobs: Newer server instance running, stopping cronjobs on this instance",
),
);
stopCronJobs();
return false;
}
logger.error(
new Error(
`Cronjobs: Stored server start time ${dbLatestStartTime} is older than this instance's start time ${instanceStartTime}`,
),
);
return false;
};
export const autoUpdateProgramItems = async (): Promise<void> => {
logger.info("----> Auto update program items");
if (!(await isLatestServerInstance())) {
return;
}
logger.info("Check if auto update already running...");
const programUpdateLastRunResult = await setProgramUpdateLastRun(
new Date().toISOString(),
);
if (!programUpdateLastRunResult.ok) {
Eif (programUpdateLastRunResult.error === MongoDbError.SETTINGS_NOT_FOUND) {
logger.error(new Error("Program auto update already running, stop"));
return;
}
logger.error(
new Error(
`***** Program items auto update failed trying to set last run time: ${programUpdateLastRunResult.error}`,
),
);
return;
}
logger.info("Auto update not running, continue");
const updateProgramItemsResult = await updateProgramItems();
if (updateProgramItemsResult.status === "error") {
logger.error(
new Error(
`***** Program items auto update failed: ${updateProgramItemsResult.message}`,
),
);
return;
}
logger.info("***** Program items auto update completed");
};
export const autoAssignAttendees = async (): Promise<void> => {
const { autoAssignDelay } = config.server();
logger.info("----> Auto assign attendees");
if (!(await isLatestServerInstance())) {
return;
}
logger.info("Check if assignment already running...");
const lockResult = await acquireAssignmentLock();
if (!lockResult.ok) {
Eif (lockResult.error === MongoDbError.ASSIGNMENT_LOCK_HELD) {
logger.error(new Error("Auto assignment already running, stop"));
return;
}
logger.error(
new Error(
`***** Auto assignment failed trying to acquire assignment lock: ${lockResult.error}`,
),
);
return;
}
const lockToken = lockResult.value;
logger.info("Auto assignment not running, continue");
try {
const runAssignmentResult = await runAssignment({
assignmentAlgorithm: config.event().assignmentAlgorithm,
assignmentTime: null,
assignmentDelay: autoAssignDelay,
});
Iif (!runAssignmentResult.ok) {
logger.error(new Error("***** Auto assignment failed"));
return;
}
await setAssignmentLastRun(new Date().toISOString());
logger.info("***** Automatic attendee assignment completed");
} finally {
await releaseAssignmentLock(lockToken);
}
};
const protectCallback = (job: Cron): void => {
const timeNow = new Date().toISOString();
// No current run means the blocking call already finished between the block
// and this log line
const startTime = job.currentRun()?.toISOString() ?? "unknown";
logger.error(
new Error(
`Cronjob ${job.name} at ${timeNow} was blocked by call started at ${startTime}`,
),
);
};
const errorHandler = (error: unknown, job: Cron): void => {
logger.error(
new Error(`Error while running cronJob ${job.name}`, { cause: error }),
);
};
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