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0b9ca1a474
* feat: Add created_time and paid_time fields to MintQuote struct * feat: Add serde default of 0 for created_time in MintQuote * feat: Add created_time and paid_time to MintQuote and MeltQuote structs * feat: Add paid_time update when setting melt quote state to Paid * fix: Update melt quote state with current Unix timestamp * feat: Add paid_time update for mint quote when state is set to Paid * feat: Add issued_time field to MintQuote conversion from SQLite row * feat: Add issued_time tracking for MintQuoteState::Issued state * feat: Add migration script for mint time of quotes * feat: Add timestamp columns to mint_quote and melt_quote tables * feat: Add timestamp columns to `add_mint_quote` method * refactor: Improve code formatting and readability in mint quote state update logic * feat: Add created_time and paid_time columns to melt_quote query * feat: time on mint and melt quotes * feat: Add migration script for mint created time signature feat: Add created_time column to blind_signature table feat: Add created_time to blind_signature insertion feat: Add created_time column to proof table and update insert query feat: time on mint and melt quotes * feat: Add new table to track blind signature creation time * feat: Add timestamp tracking for proofs in ReDB database * feat: redb proof time * chore: fmt
CDK Payment Processor
The cdk-payment-processor is a Rust crate that provides both a binary and a library for handling payments to and from a cdk mint.
Overview
Library Components
- Payment Processor Server: Handles interaction with payment processor backend implementations
- Client: Used by mintd to query the server for payment information
- Backend Implementations: Supports CLN, LND, and a fake wallet (for testing)
Features
- Modular backend system supporting multiple Lightning implementations
- Extensible design allowing for custom backend implementations
Building from Source
Prerequisites
- Install Nix package manager
- Enter development environment:
nix develop
Configuration
The server requires different environment variables depending on your chosen Lightning Network backend.
Core Settings
# Choose backend: CLN, LND, or FAKEWALLET
export CDK_PAYMENT_PROCESSOR_LN_BACKEND="CLN"
# Server configuration
export CDK_PAYMENT_PROCESSOR_LISTEN_HOST="127.0.0.1"
export CDK_PAYMENT_PROCESSOR_LISTEN_PORT="8090"
Backend-Specific Configuration
Core Lightning (CLN)
# Path to CLN RPC socket
export CDK_PAYMENT_PROCESSOR_CLN_RPC_PATH="/path/to/lightning-rpc"
Lightning Network Daemon (LND)
# LND connection details
export CDK_PAYMENT_PROCESSOR_LND_ADDRESS="localhost:10009"
export CDK_PAYMENT_PROCESSOR_LND_CERT_FILE="/path/to/tls.cert"
export CDK_PAYMENT_PROCESSOR_LND_MACAROON_FILE="/path/to/macaroon"
Building and Running
Build and run the binary with your chosen backend:
# For CLN backend
cargo run --bin cdk-payment-processor --no-default-features --features cln
# For LND backend
cargo run --bin cdk-payment-processor --no-default-features --features lnd
# For fake wallet (testing only)
cargo run --bin cdk-payment-processor --no-default-features --features fake
Development
To implement a new backend:
- Create a new module implementing the payment processor traits
- Add appropriate feature flags
- Update the binary to support the new backend
For library usage examples and API documentation, refer to the crate documentation.