[jira] [Created] (SCB-1048) Provide a way to configure bootstrap information in Cloud Native enviroment

["liubao (JIRA)" <ji...@apache.org>]

liubao created SCB-1048:
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             Summary: Provide a way to configure bootstrap information in Cloud Native enviroment
                 Key: SCB-1048
                 URL: https://issues.apache.org/jira/browse/SCB-1048
             Project: Apache ServiceComb
          Issue Type: New Feature
            Reporter: liubao
            Assignee: liubao


# About Bootstrap Module

Bootstrap is a mechanism to manage how microservics interact with external services. When running a microservic in a Cloud Native enviroment, it will interact with many external services, like service center, config center, an APM service to report tracing data, a dashboard service to report health data, etc. Bootstrap manages the meta data of these services. Bootstrap queries the addresses , the parameters, the authentication information of these services and so on.

Bootstrap is some kind of service like service center, they are differ from two aspects:
1. All microservics will report their information to service center. But Bootstrap acts as a management system and knows the meta information in deploy time. 
2. Service center provide some other functions like instance management and heartbeat, But Bootstrap only provide metadata query services and it is simple.

Bootstrap does not provide a management service, it providers the interface to interacts with management service. Service Providers can implement the interface.

They are some design constraints need to be considered when implment Bootstrap interface:
1. Bootstrap can only read configurations of environment, microservics.yaml. It can not read dynamic configurations.
2. Bootstrap is initialized before bean initialization.



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