Initial commit

node_modules/mongodb/lib/cmap/events.js

@@ -0,0 +1,154 @@
+'use strict';
+
+/**
+ * The base class for all monitoring events published from the connection pool
+ *
+ * @property {number} time A timestamp when the event was created
+ * @property {string} address The address (host/port pair) of the pool
+ */
+class ConnectionPoolMonitoringEvent {
+  constructor(pool) {
+    this.time = new Date();
+    this.address = pool.address;
+  }
+}
+
+/**
+ * An event published when a connection pool is created
+ *
+ * @property {Object} options The options used to create this connection pool
+ */
+class ConnectionPoolCreatedEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool) {
+    super(pool);
+    this.options = pool.options;
+  }
+}
+
+/**
+ * An event published when a connection pool is closed
+ */
+class ConnectionPoolClosedEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool) {
+    super(pool);
+  }
+}
+
+/**
+ * An event published when a connection pool creates a new connection
+ *
+ * @property {number} connectionId A monotonically increasing, per-pool id for the newly created connection
+ */
+class ConnectionCreatedEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool, connection) {
+    super(pool);
+    this.connectionId = connection.id;
+  }
+}
+
+/**
+ * An event published when a connection is ready for use
+ *
+ * @property {number} connectionId The id of the connection
+ */
+class ConnectionReadyEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool, connection) {
+    super(pool);
+    this.connectionId = connection.id;
+  }
+}
+
+/**
+ * An event published when a connection is closed
+ *
+ * @property {number} connectionId The id of the connection
+ * @property {string} reason The reason the connection was closed
+ */
+class ConnectionClosedEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool, connection, reason) {
+    super(pool);
+    this.connectionId = connection.id;
+    this.reason = reason || 'unknown';
+  }
+}
+
+/**
+ * An event published when a request to check a connection out begins
+ */
+class ConnectionCheckOutStartedEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool) {
+    super(pool);
+  }
+}
+
+/**
+ * An event published when a request to check a connection out fails
+ *
+ * @property {string} reason The reason the attempt to check out failed
+ */
+class ConnectionCheckOutFailedEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool, reason) {
+    super(pool);
+    this.reason = reason;
+  }
+}
+
+/**
+ * An event published when a connection is checked out of the connection pool
+ *
+ * @property {number} connectionId The id of the connection
+ */
+class ConnectionCheckedOutEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool, connection) {
+    super(pool);
+    this.connectionId = connection.id;
+  }
+}
+
+/**
+ * An event published when a connection is checked into the connection pool
+ *
+ * @property {number} connectionId The id of the connection
+ */
+class ConnectionCheckedInEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool, connection) {
+    super(pool);
+    this.connectionId = connection.id;
+  }
+}
+
+/**
+ * An event published when a connection pool is cleared
+ */
+class ConnectionPoolClearedEvent extends ConnectionPoolMonitoringEvent {
+  constructor(pool) {
+    super(pool);
+  }
+}
+
+const CMAP_EVENT_NAMES = [
+  'connectionPoolCreated',
+  'connectionPoolClosed',
+  'connectionCreated',
+  'connectionReady',
+  'connectionClosed',
+  'connectionCheckOutStarted',
+  'connectionCheckOutFailed',
+  'connectionCheckedOut',
+  'connectionCheckedIn',
+  'connectionPoolCleared'
+];
+
+module.exports = {
+  CMAP_EVENT_NAMES,
+  ConnectionPoolCreatedEvent,
+  ConnectionPoolClosedEvent,
+  ConnectionCreatedEvent,
+  ConnectionReadyEvent,
+  ConnectionClosedEvent,
+  ConnectionCheckOutStartedEvent,
+  ConnectionCheckOutFailedEvent,
+  ConnectionCheckedOutEvent,
+  ConnectionCheckedInEvent,
+  ConnectionPoolClearedEvent
+};