SlackErrorExporter class

A convenience ErrorExporter that sends error reports to a Slack channel via an Incoming Webhook URL.

This is a thin wrapper around HttpErrorExporter pre-configured with SlackPayloadFormatter. For full control over the formatter or transport, compose HttpErrorExporter and SlackPayloadFormatter directly.

To obtain a webhook URL, create an Incoming Webhook in your Slack app settings: https://api.slack.com/messaging/webhooks

Use payloadBuilder to merge dynamic top-level fields into the Slack webhook payload, or headersBuilder to inject dynamic HTTP headers on every send. Both are useful when routing through a proxy that requires extra keys or authentication:

final exporter = SlackErrorExporter(
  'https://proxy.example.com/slack',
  payloadBuilder: () => {
    'channel': '#alerts',
    'username': 'ErrorBot',
  },
  headersBuilder: () => {
    'Authorization': 'Bearer ${tokenProvider.current}',
    'X-Routing-Key': 'my-service',
  },
);
Inheritance

Constructors

SlackErrorExporter(String webhookUrl, {Map<String, dynamic> payloadBuilder()?, Map<String, String> headersBuilder()?})
Creates a SlackErrorExporter that posts to the given webhookUrl.

Properties

formatter → ErrorFormatter
The formatter that converts log records into the request body.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
headersBuilder → Map<String, String> Function()?
Optional callback invoked on every send to supply additional HTTP headers.
finalinherited
payloadBuilder → Map<String, dynamic> Function(Map<String, dynamic>)?
Optional callback to transform the formatted payload before delivery.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
url → String
The URL to POST the formatted payload to.
finalinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
send(LogRecord error, List<LogRecord> contextLogs, Map<String, String> metadata) → Future<void>
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited