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LambdaSharp.App 0.8.4.1

LambdaSharp.App

This package contains interfaces and classes used for building Blazor WebAssembly applications that connects with AWS services for logging and events.

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ALambdaComponent

The ALambdaComponent base classes includes logging methods to make it easy to report information to CloudWatch Logs and optionally to an error aggregator, such as Rollbar. Each application instance creates a new CloudWatch Log stream. All logging is directed to the same stream until the application is reloaded.

• LogDebug(): Log a debugging message. This message will only appear in the log when debug logging is enabled and will not be forwarded to an error aggregator.
• LogInfo(): Log an informational message. This message will only appear in the log and not be forwarded to an error aggregator.
• LogWarn(): Log a warning message. This message will be reported if an error aggregator is configured for the <c>LambdaSharp.Core</c> module.
• LogError(): Log an exception as an error. This message will be reported if an error aggregator is configured for the <c>LambdaSharp.Core</c> module.
• LogErrorAsInfo(): Log an exception as an information message. This message will only appear in the log and not be forwarded to an error aggregator.
• LogErrorAsWarning(): Log an exception as a warning. This message will be reported if an error aggregator is configured for the <c>LambdaSharp.Core</c> module.
• LogFatal(): Log an exception with a custom message as a fatal error. This message will be reported if an error aggregator is configured for the <c>LambdaSharp.Core</c> module.
• LogMetric(): Log a CloudWatch metric. The metric is picked up by CloudWatch logs and automatically ingested as a CloudWatch metric.

LambdaSharpEventBusClient

The LambdaSharpEventBusClient class provides a client to subscribe to a pre-configured subset of EventBridge events.

The following code subscribe a handler to EventBridge events that have Sample.BlazorEventsSample::MyBlazorApp as their source.

protected override async Task OnInitializedAsync() {
 base.OnInitialized();

 // create subscription
 EventBus.SubscribeTo<TodoItem>("Sample.BlazorEventsSample::MyBlazorApp", TodoItemEvent);
}

private void TodoItemEvent(TodoItem todoEvent) {

 // TO-DO: add logic to handle EventBridge event

 // update user interface
 StateHasChanged();
}

License

Copyright (c) 2018-2022 LambdaSharp (λ#)

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.