HeartbeatRestService class
Service returns heartbeat via HTTP/REST protocol.
The service responds on /heartbeat route (can be changed) with a string with the current time in UTC.
This service route can be used to health checks by loadbalancers and container orchestrators.
Configuration parameters
base_route
: base route for remote URI (default: '')route
: route to heartbeat operation (default: 'heartbeat')dependencies
:- endpoint: override for HTTP Endpoint dependency
connection(s)
:discovery_key
: (optional) a key to retrieve the connection from IDiscoveryprotocol
: connection protocol: http or httpshost
: host name or IP addressport
: port numberuri
: resource URI or connection string with all parameters in it
References
\*:logger:\*:\*:1.0
(optional) ILogger components to pass log messages\*:counters:\*:\*:1.0
(optional) ICounters components to pass collected measurements\*:discovery:\*:\*:1.0
(optional) IDiscovery services to resolve connection\*:endpoint:http:\*:1.0
(optional) HttpEndpoint reference
See RestService See RestClient
Example
var service = new HeartbeatService();
service.configure(ConfigParams.fromTuples(
'route', 'ping',
'connection.protocol', 'http',
'connection.host', 'localhost',
'connection.port', 8080
));
service.open('123', (err) => {
console.log('The Heartbeat service is accessible at http://+:8080/ping');
});
- Inheritance
-
- Object
- RestService
- HeartbeatRestService
Constructors
- HeartbeatRestService()
- Creates a new instance of this service.
Properties
- baseRoute ↔ String?
-
The base route.
getter/setter pairinherited
- config ↔ ConfigParams?
-
getter/setter pairinherited
- counters ↔ CompositeCounters
-
The performance counters.
getter/setter pairinherited
- dependencyResolver ↔ DependencyResolver
-
The dependency resolver.
getter/setter pairinherited
- endpoint ↔ HttpEndpoint?
-
The HTTP endpoint that exposes this service.
getter/setter pairinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- logger ↔ CompositeLogger
-
The logger.
getter/setter pairinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- swaggerEnable ↔ bool
-
getter/setter pairinherited
- swaggerRoute ↔ String
-
getter/setter pairinherited
- tracer ↔ CompositeTracer
-
getter/setter pairinherited
Methods
-
close(
String? correlationId) → Future -
Closes component and frees used resources.
inherited
-
configure(
ConfigParams config) → void -
Configures component by passing configuration parameters.
override
-
getCorrelationId(
Request req) → String? -
Returns correlationId from request
inherited
-
instrument(
String? correlationId, String name) → InstrumentTiming -
Adds instrumentation to log calls and measure call time.
It returns a Timing object that is used to end the time measurement.
inherited
-
instrumentError(
String? correlationId, String name, dynamic err, [bool? reerror = false]) → void -
Adds instrumentation to error handling.
inherited
-
isOpen(
) → bool -
Checks if the component is opened.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
open(
String? correlationId) → Future -
Opens the component.
inherited
-
register(
) → void -
Registers all service routes in HTTP endpoint.
override
-
registerInterceptor(
String route, dynamic action(Request req)) → void -
Registers a middleware for a given route in HTTP endpoint.
inherited
-
registerOpenApiSpec_(
String content) → void -
inherited
-
registerOpenApiSpecFromFile(
String path) → void -
inherited
-
registerRoute(
String method, String route, Schema? schema, FutureOr< Response> action(Request req)) → void -
Registers a route in HTTP endpoint.
inherited
-
registerRouteWithAuth(
String method, String route, Schema schema, FutureOr< Response?> authorize(Request req, Future next()), FutureOr<Response> action(Request req)) → void -
Registers a route with authorization in HTTP endpoint.
inherited
-
sendCreatedResult(
Request req, dynamic result) → FutureOr< Response> -
Creates function that sends newly created object as JSON.
That function call be called directly or passed
as a parameter to business logic components.
inherited
-
sendDeletedResult(
Request req, dynamic result) → FutureOr< Response> -
Creates a function that sends deleted object as JSON.
That function call be called directly or passed
as a parameter to business logic components.
inherited
-
sendError(
Request req, dynamic error) → FutureOr< Response> -
Sends error serialized as ErrorDescription object
and appropriate HTTP status code.
If status code is not defined, it uses 500 status code.
inherited
-
sendResult(
Request req, dynamic result) → FutureOr< Response> -
Sends result as JSON object.
That function call be called directly or passed
as a parameter to business logic components.
inherited
-
setReferences(
IReferences references) → void -
Sets references to dependent components.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
unsetReferences(
) → void -
Unsets (clears) previously set references to dependent components.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited