feat: Add support for MongoDB databaseOptions keys minPoolSize, connectTimeoutMS, socketTimeoutMS (#9522)

Author: pocketcolin

Diff for: spec/ParseConfigKey.spec.js

@@ -81,6 +81,9 @@ describe('Config Keys', () => {
         maxTimeMS: 1000,
         maxStalenessSeconds: 10,
         maxPoolSize: 10,
+        minPoolSize: 5,
+        connectTimeoutMS: 5000,
+        socketTimeoutMS: 5000,
       },
     })).toBeResolved();
     expect(loggerErrorSpy.calls.all().reduce((s, call) => s += call.args[0], '')).not.toMatch(invalidKeyErrorMessage);

Diff for: src/Options/Definitions.js

@@ -1043,6 +1043,12 @@ module.exports.FileUploadOptions = {
   },
 };
 module.exports.DatabaseOptions = {
+  connectTimeoutMS: {
+    env: 'PARSE_SERVER_DATABASE_CONNECT_TIMEOUT_MS',
+    help:
+      'The MongoDB driver option to specify the amount of time, in milliseconds, to wait to establish a single TCP socket connection to the server before raising an error. Specifying 0 disables the connection timeout.',
+    action: parsers.numberParser('connectTimeoutMS'),
+  },
   enableSchemaHooks: {
     env: 'PARSE_SERVER_DATABASE_ENABLE_SCHEMA_HOOKS',
     help:
@@ -1068,6 +1074,12 @@ module.exports.DatabaseOptions = {
       'The MongoDB driver option to set a cumulative time limit in milliseconds for processing operations on a cursor.',
     action: parsers.numberParser('maxTimeMS'),
   },
+  minPoolSize: {
+    env: 'PARSE_SERVER_DATABASE_MIN_POOL_SIZE',
+    help:
+      'The MongoDB driver option to set the minimum number of opened, cached, ready-to-use database connections maintained by the driver.',
+    action: parsers.numberParser('minPoolSize'),
+  },
   retryWrites: {
     env: 'PARSE_SERVER_DATABASE_RETRY_WRITES',
     help: 'The MongoDB driver option to set whether to retry failed writes.',
@@ -1079,6 +1091,12 @@ module.exports.DatabaseOptions = {
       'The duration in seconds after which the schema cache expires and will be refetched from the database. Use this option if using multiple Parse Servers instances connected to the same database. A low duration will cause the schema cache to be updated too often, causing unnecessary database reads. A high duration will cause the schema to be updated too rarely, increasing the time required until schema changes propagate to all server instances. This feature can be used as an alternative or in conjunction with the option `enableSchemaHooks`. Default is infinite which means the schema cache never expires.',
     action: parsers.numberParser('schemaCacheTtl'),
   },
+  socketTimeoutMS: {
+    env: 'PARSE_SERVER_DATABASE_SOCKET_TIMEOUT_MS',
+    help:
+      'The MongoDB driver option to specify the amount of time, in milliseconds, spent attempting to send or receive on a socket before timing out. Specifying 0 means no timeout.',
+    action: parsers.numberParser('socketTimeoutMS'),
+  },
 };
 module.exports.AuthAdapter = {
   enabled: {

Diff for: src/Options/docs.js

@@ -602,8 +602,14 @@ export interface DatabaseOptions {
   maxTimeMS: ?number;
   /* The MongoDB driver option to set the maximum replication lag for reads from secondary nodes.*/
   maxStalenessSeconds: ?number;
+  /* The MongoDB driver option to set the minimum number of opened, cached, ready-to-use database connections maintained by the driver. */
+  minPoolSize: ?number;
   /* The MongoDB driver option to set the maximum number of opened, cached, ready-to-use database connections maintained by the driver. */
   maxPoolSize: ?number;
+  /* The MongoDB driver option to specify the amount of time, in milliseconds, to wait to establish a single TCP socket connection to the server before raising an error. Specifying 0 disables the connection timeout. */
+  connectTimeoutMS: ?number;
+  /* The MongoDB driver option to specify the amount of time, in milliseconds, spent attempting to send or receive on a socket before timing out. Specifying 0 means no timeout. */
+  socketTimeoutMS: ?number;
 }
 
 export interface AuthAdapter {