Implement websubhub:ServiceConfig annotation for websubhub:Service

[ayeshLK]

Purpose

$subject

Fixes 1253
Fixes 1249

Examples

• Updated websubhub:ClientConfiguration which could be used for websubhub:HubClient / websubhub:PublisherClient is as follows.

public type ClientConfiguration record {|
    string httpVersion = HTTP_1_1;
    http:ClientHttp1Settings http1Settings = {};
    http:ClientHttp2Settings http2Settings = {};
    decimal timeout = 60;
    http:PoolConfiguration poolConfig?;
    http:RetryConfig retryConfig?;
    http:ResponseLimitConfigs responseLimits = {};
    http:ClientSecureSocket secureSocket?;
    http:CircuitBreakerConfig circuitBreaker?;
|};

• websubhub:ServiceConfig is an optional annotation configuration which could be included to websubhub:Service declaration. Following is a sample on how to use the websubhub:ServiceConfig. leaseSeconds parameter is used to identify the subscription deactivation. webHookConfig is used for underlying http:Client used for subscription and unsubscription verification.

@websubhub:ServiceConfig {
    leaseSeconds: 86400,
    webHookConfig: {
        secureSocket: {
            cert: {
                path: "tests/resources/ballerinaTruststore.pkcs12",
                password: "ballerina"
            }
        }
    }
}
service /websubhub on new Listener(9099) {
    isolated remote function onRegisterTopic(TopicRegistration message) returns TopicRegistrationSuccess {
        return TOPIC_REGISTRATION_SUCCESS;
    }
    // implement other service methods
}

Checklist

• Linked to an issue
• Updated the changelog
• Added tests

[codecov]

Codecov Report

Merging #96 (3756a07) into main (0ea6c0b) will increase coverage by 5.13%.
The diff coverage is 97.43%.

@@             Coverage Diff              @@
##               main      #96      +/-   ##
============================================
+ Coverage     75.61%   80.75%   +5.13%     
- Complexity       13       14       +1     
============================================
  Files            10       11       +1     
  Lines           771      800      +29     
  Branches        430      436       +6     
============================================
+ Hits            583      646      +63     
+ Misses          188      154      -34     

Impacted Files	Coverage Δ	Complexity Δ
websubhub-ballerina/hub_listener.bal	86.36% <91.66%> (+1.06%)	0.00 <0.00> (ø)
websubhub-ballerina/annotation.bal	100.00% <100.00%> (ø)	0.00 <0.00> (?)
websubhub-ballerina/commons.bal	89.83% <100.00%> (+5.73%)	0.00 <0.00> (ø)
websubhub-ballerina/http_service.bal	82.01% <100.00%> (+12.16%)	0.00 <0.00> (ø)
websubhub-ballerina/hub_client.bal	85.82% <100.00%> (ø)	0.00 <0.00> (ø)
websubhub-ballerina/publisher_client.bal	79.85% <100.00%> (+1.43%)	0.00 <0.00> (ø)
websubhub-ballerina/utils.bal	74.16% <100.00%> (+5.00%)	0.00 <0.00> (ø)
... and 4 more

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[ldclakmal]

LGTM