NDID Migration Tools

Prerequisites

• Go version >= 1.13.0
• (Optional) (for reading from LevelDB using C lib) LevelDB version >= 1.7 and snappy

Getting Started

go run main.go

To run with C lib support for LevelDB:

CGO_ENABLED=1 CGO_LDFLAGS="-lsnappy" go run -tags "cleveldb" main.go

Environment variable options

• INITIAL_STATE_DATA_DIR : Directory path of initial state data
• INITIAL_STATE_DATA_FILENAME : File name of ABCI initial state data file [Default: data]
• BACKUP_VALIDATORS_FILENAME : File name of validators backup data
• CHAIN_HISTORY_FILENAME : File name of chain history data [Default: chain_history]

Specific to create-initial-state-data command

• TM_HOME: Source Tendermint home directory path
• ABCI_DB_DIR_PATH : Source ABCI state DB directory path

Specific to restore command

• NDID_NODE_ID : NDID node ID [Default: NDID]
• KEY_DIR: NDID node key directory path [Default: ./dev_keys/]
• TENDERMINT_RPC_HOST : Tendermint RPC host [Default: localhost]
• TENDERMINT_RPC_PORT : Tendermint RPC port [Default: 45000]

Migrate Data to a New Chain

Option 1

1. Run backup with command create-initial-state-data [fromVersion] [toVersion]

Example:

go run main.go create-initial-state-data 4 5

2. Run restore with command restore [toVersion]

Example:

go run main.go restore 5

Option 2

1. Run create initial state data with command create-initial-state-data [fromVersion] [toVersion]

Example:

go run main.go create-initial-state-data 6 7

2. Use created initial state data with Tendermint/ABCI for InitChain. Refer to https://github.com/ndidplatform/smart-contract for usage.