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pezkuwichain 1c0e57d984 feat: Rebrand Polkadot/Substrate references to PezkuwiChain

This commit systematically rebrands various references from Parity Technologies'
Polkadot/Substrate ecosystem to PezkuwiChain within the kurdistan-sdk.

Key changes include:
- Updated external repository URLs (zombienet-sdk, parity-db, parity-scale-codec, wasm-instrument) to point to pezkuwichain forks.
- Modified internal documentation and code comments to reflect PezkuwiChain naming and structure.
- Replaced direct references to  with  or specific paths within the  for XCM, Pezkuwi, and other modules.
- Cleaned up deprecated  issue and PR references in various  and  files, particularly in  and  modules.
- Adjusted image and logo URLs in documentation to point to PezkuwiChain assets.
- Removed or rephrased comments related to external Polkadot/Substrate PRs and issues.

This is a significant step towards fully customizing the SDK for the PezkuwiChain ecosystem.

2025-12-14 00:04:10 +03:00

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pezpallet-oracle

Overview

The Oracle pallet provides a decentralized and trustworthy way to bring external, off-chain data onto the blockchain. It allows a configurable set of oracle operators to feed data, such as prices, into the system. This data can then be used by other pallets.

The pallet is designed to be flexible and can be configured to use different data sources and aggregation strategies.

Key Concepts

Oracle Operators: A set of trusted accounts that are authorized to submit data to the oracle. The pallet uses the frame_support::traits::SortedMembers trait to manage the set of operators. This allows using pallets like pezpallet-membership to manage the oracle members.
Data Feeds: Operators feed data as key-value pairs. The OracleKey is used to identify the data being fed (e.g., a specific currency pair), and the OracleValue is the data itself (e.g., the price).
Data Aggregation: The pallet can be configured with a CombineData implementation to aggregate the raw values submitted by individual operators into a single, trusted value. A default implementation DefaultCombineData is provided, which takes the median of the values.
Timestamped Data: All data submitted to the oracle is timestamped, allowing consumers of the data to know how fresh it is.

Interface

Dispatchable Functions

feed_values - Allows an authorized oracle operator to submit a set of key-value data points.

Public Functions

get - Returns the aggregated and timestamped value for a given key.
get_all_values - Returns all aggregated and timestamped values.
read_raw_values - Returns the raw, un-aggregated values for a given key from all oracle operators.

Data Providers

The pallet implements the DataProvider and DataProviderExtended traits, allowing other pallets to easily consume the oracle data.

Usage

To use the oracle pallet, you need to:

Add it to your runtime's Cargo.toml.
Implement the Config trait for the pallet in your runtime. This includes specifying:
- OnNewData: A hook to perform actions when new data is received.
- CombineData: The data aggregation strategy.
- Time: The time provider.
- OracleKey, OracleValue: The types for the data key and value.
- RootOperatorAccountId: An account with sudo-like permissions for the oracle.
- Members: The source of oracle operators.
Add the pallet to your runtime's construct_runtime! macro.

Once configured, authorized operators can call feed_values to submit data, and other pallets can use the DataProvider trait to read the aggregated data.

License: Apache-2.0

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