poolChannels

import { poolChannels } from 'postgrejs';

Plain node:diagnostics_channel channels on which a Pool reports what it does, since 3.15.0, for metrics on how full a pool is and how long its connections are held. Each value is a Node Channel; the same channel is also reachable by name with diagnosticsChannel.channel('postgrejs:pool:checkout') and so on. Nothing is published while a channel has no subscribers.

See Pool channels in the Tracing Channels guide for usage.

Key	Channel name	Published when	Message
create	postgrejs:pool:create	a pool is constructed	PoolEventMessage
close	postgrejs:pool:close	a pool has closed	PoolEventMessage
checkout	postgrejs:pool:checkout	a pooled connection is handed out, by acquire() or to a pipelined pool.query()	PoolCheckoutMessage
checkin	postgrejs:pool:checkin	a pooled connection comes back	PoolCheckoutMessage
timeout	postgrejs:pool:timeout	a caller gave up waiting, after acquireTimeoutMillis	PoolEventMessage

PoolEventMessage

Key	Type	Description
pool	Pool	The pool

PoolCheckoutMessage

Key	Type	Description
pool	Pool	The pool
resource	object	An opaque object standing for the pooled connection, the same one in a checkout and the checkin that ends it. It is not a Connection