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Coretime auto-renew (#4424)
Sergej Sakac authored 
This PR adds functionality that allows tasks to enable auto-renewal.
Each task eligible for renewal can enable auto-renewal.

A new storage value is added to track all the cores with auto-renewal
enabled and the associated task running on the core. The `BoundedVec` is
sorted by `CoreIndex` to make disabling auto-renewal more efficient.

Cores are renewed at the start of a new bulk sale. If auto-renewal
fails(e.g. due to the sovereign account of the task not holding
sufficient balance), an event will be emitted, and the renewal will
continue for the other cores.

The two added extrinsics are:
- `enable_auto_renew`: Extrinsic for enabling auto renewal.
- `disable_auto_renew`: Extrinsic for disabling auto renewal.

TODOs:
- [x] Write benchmarks for the newly added extrinsics.

Closes: #4351

---------

Co-authored-by: default avatarDónal Murray <donalm@seadanda.dev>
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README.md

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Polkadot SDK

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The Polkadot SDK repository provides all the components needed to start building on the Polkadot network, a multi-chain blockchain platform that enables different blockchains to interoperate and share information in a secure and scalable way.

⚡ Quickstart

If you want to get an example node running quickly you can execute the following getting started script:

curl --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/scripts/getting-started.sh | bash

📚 Documentation

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[!NOTE] Our release process is still Work-In-Progress and may not yet reflect the aspired outline here.

The Polkadot-SDK has two release channels: stable and nightly. Production software is advised to only use stable. nightly is meant for tinkerers to try out the latest features. The detailed release process is described in RELEASE.md.

You can use psvm to manage your Polkadot-SDK dependency versions in downstream projects.

😌 Stable

stable releases have a support duration of three months. In this period, the release will not have any breaking changes. It will receive bug fixes, security fixes, performance fixes and new non-breaking features on a two week cadence.

🤠 Nightly

nightly releases are released every night from the master branch, potentially with breaking changes. They have pre-release version numbers in the format major.0.0-nightlyYYMMDD.

🛠️ Tooling

Polkadot SDK Version Manager: A simple tool to manage and update the Polkadot SDK dependencies in any Cargo.toml file. It will automatically update the Polkadot SDK dependencies to their correct crates.io version.

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The security policy and procedures can be found in docs/contributor/SECURITY.md.

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Ensure you follow our contribution guidelines. In every interaction and contribution, this project adheres to the Contributor Covenant Code of Conduct.

👾 Ready to Contribute?

Take a look at the issues labeled with mentor (or alternatively this page, created by one of the maintainers) label to get started! We always recognize valuable contributions by proposing an on-chain tip to the Polkadot network as a token of our appreciation.

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Development in this repo usually goes hand in hand with the fellowship organization. In short, this repository provides all the SDK pieces needed to build both Polkadot and its parachains. But, the actual Polkadot runtime lives in the fellowship/runtimes repository. Read more about the fellowship, this separation, the RFC process here.

History

This repository is the amalgamation of 3 separate repositories that used to make up Polkadot SDK, namely Substrate, Polkadot and Cumulus. Read more about the merge and its history here.