feat: Portal 模块 RestTemplate 支持配置 ConnectionTimeToLive

[larry4xie]

希望 Portal 模块 RestTemplateFactory 支持配置 ConnectionTimeToLive，详见 #5120

Summary by CodeRabbit

• New Features
  • Enhanced network connection stability by configuring the connection time to live.

[coderabbitai]

Walkthrough

The changes involve enhancing the Apollo Portal's RestTemplate component to support configurable connection lifetimes. This is achieved by adding a new configuration option in PortalConfig and utilizing it to set the ConnectionTimeToLive for the CloseableHttpClient used by the RestTemplateFactory. This update aims to improve the resilience of the service discovery mechanism under network fault conditions.

Changes

File Path	Change Summary
.../apollo/portal/component/RestTemplateFactory.java	Added TimeUnit import; modified CloseableHttpClient creation to use connectionTimeToLive from PortalConfig.
.../apollo/portal/component/config/PortalConfig.java	Added connectionTimeToLive() method to return api.connectionTimeToLive property value.

Possibly related issues

• apolloconfig/apollo#5120: The issue requests for ConnectionTimeToLive configurability in the Portal module to address network fault scenarios. This PR directly implements the requested feature, suggesting a solution to the problem outlined.

Poem

As the moon whispers to the night, a change takes flight,
In the land of Apollo, where configurations shine bright.
🐇 A rabbit hopped, code in paw, setting connections to renew,
🌌 Under starlit skies, a resilience grew.
Through the network's weave, they dance and weave,
A tale of connections, in which we believe.
So here's to changes, both big and small, a toast,
For every packet lost, may resilience be our boast.

Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media?

Share

• X
• Mastodon
• Reddit
• LinkedIn

---

Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>.
  • Generate unit testing code for this file.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
  • @coderabbitai generate unit testing code for this file.
  • @coderabbitai modularize this function.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai generate interesting stats about this repository and render them as a table.
  • @coderabbitai show all the console.log statements in this repository.
  • @coderabbitai read src/utils.ts and generate unit testing code.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (invoked as PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger a review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai help to get help.

Additionally, you can add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.

CodeRabbit Configration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• Please see the configuration documentation for more information.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json

Documentation and Community

• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[coderabbitai]

Actionable comments posted: 0

Review Status

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between c884de5 and 632d4b7.

Files selected for processing (2)

• apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/component/RestTemplateFactory.java (2 hunks)
• apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/component/config/PortalConfig.java (1 hunks)

Additional comments not posted (3)

apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/component/RestTemplateFactory.java (2)

31-31: The import of TimeUnit is correctly added to support specifying the time unit for connection TTL.

---

62-64: The implementation correctly sets the connection TTL for CloseableHttpClient. Ensure that the default TTL value of -1 behaves as expected (e.g., connections do not expire prematurely).

apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/component/config/PortalConfig.java (1)

172-174: The connectionTimeToLive() method is correctly implemented to fetch the TTL configuration. Consider documenting the default behavior when the TTL is set to -1.

[shoothzj]

Thanks for your contribution. I have a question. Is there any mechanism like RestTemplate timeout reconnect?

[larry4xie]

@shoothzj 丢包会产生 read timeout, 但是不同于 TCP FIN or RST, RestTemplate 不会重建连接，还是使用的被故障注入的 IP

[shoothzj]

It makes sense if ClosableHttpClient will not reconnect after rw timeout

[larry4xie]

I have read the CLA Document and I hereby sign the CLA