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SECDataHandler

This package uses leveldb to store and handle data from SEC blockchain, this repository includes operations to four databases:

• Token Block Chain Database
• Transaction Block Chain Database
• Account Database
• Product Database

The databases contain following methods:

TokenBlockChainDB

Kind: global class

• TokenBlockChainDB
  • new TokenBlockChainDB(config)
  • .writeTokenBlockToDB(tokenData, callback) ⇒ None
  • .isTokenBlockChainDBEmpty(callback) ⇒ None
  • .getTokenBlockChainDB(callback) ⇒ None
  • .getTokenBlockFromDB(blockHashArray, callback) ⇒ None
  • .getTokenChain(minBlockNumber, maxBlockNumber, callback) ⇒ None
  • .delBlocksFromHeight(blockHeight, callback) ⇒ None
  • .addUpdateBlock(pos, blockArray, callback) ⇒ None
  • .findTxForUser(userAddress, callback) ⇒ None
  • .findTx(userAddress, callback) ⇒ None

AccountDB

Kind: global class

• AccountDB
  • new AccountDB(config)
  • .writeUserInfoToAccountDB(accDataList, callback) ⇒ None
  • .readUserInfofromAccountDB(accNameList) ⇒ Promise Object
  • .isAccountDBEmpty(callback) ⇒ None
  • .getAccountDB(callback) ⇒ None
  • .isAccountInAccountDB(accName, callback) ⇒ None

ProductDB

Kind: global class

• ProductDB
  • new ProductDB(config)
  • .writeTxBlockToDB(txData, callback) ⇒ None
  • .isProductDBEmpty(callback) ⇒ None
  • .getProductDB(callback) ⇒ None

TokenBlockChainDB Methods

new TokenBlockChainDB(config)

| Param | Type | Description | | --- | --- | --- | | config | Object | contains the relative path for storing database |

tokenBlockChainDB.writeTokenBlockToDB(tokenData, callback) ⇒ None

Write single token block or full token chain data to database

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | tokenData | Array, Object | single token block data or full token block chain data | | callback | function | callback function, returns error if exist |

tokenBlockChainDB.isTokenBlockChainDBEmpty(callback) ⇒ None

Check whether the token block chain database is empty

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | callback | function | callback function, callback arguments (err, emptyFlag) |

tokenBlockChainDB.getTokenBlockChainDB(callback) ⇒ None

Get all the block datas from token block chain database

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | callback | function | callback function, callback arguments (err, block object array) |

tokenBlockChainDB.getTokenBlockFromDB(blockHashArray, callback) ⇒ None

Get token blocks according to block hash values

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | blockHashArray | String, Array | block hash values, string or array format | | callback | function | callback function, callback arguments (err, block object array) |

tokenBlockChainDB.getTokenChain(minBlockNumber, maxBlockNumber, callback) ⇒ None

Get token block chain data, from number 'minBlockNumber' to number 'maxBlockNumber'

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | minBlockNumber | Integer | minimum block number | | maxBlockNumber | Integer | maximum block number | | callback | function | callback function, callback arguments (err, block object array) |

tokenBlockChainDB.delBlocksFromHeight(blockHeight, callback) ⇒ None

Delete blocks which have a higher height than the input 'blockHeight' argument

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | blockHeight | Integer | blocks with larger height will be deleted from database | | callback | function | callback function, callback arguments (err) |

tokenBlockChainDB.addUpdateBlock(pos, blockArray, callback) ⇒ None

Add new blocks from a specific position if the blocks does not exist Update old blocks from a specific position if the blocks already exist

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | pos | Integer | block add/update starting position | | blockArray | Array | array of block data(json object) | | callback | function | callback function, callback arguments (err) |

tokenBlockChainDB.findTxForUser(userAddress, callback) ⇒ None

Find all previous transactions for a user

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | userAddress | String | user account address | | callback | function | callback function, callback arguments (txArray, err) |

tokenBlockChainDB.findTx(txHash, callback) ⇒ None

Find a previous transactions for a user by transaction hash

Kind: instance method of TokenBlockChainDB

| Param | Type | Description | | --- | --- | --- | | txHash | String | transaction hash | | callback | function | callback function, callback arguments (txArray, err) |

AccountDB Methods

new AccountDB(config)

| Param | Type | Description | | --- | --- | --- | | config | Object | contains the relative path for storing database |

accountDB.writeUserInfoToAccountDB(accDataList, callback) ⇒ None

Write user account information to account database

Kind: instance method of AccountDB

| Param | Type | Description | | --- | --- | --- | | accDataList | Array, Object | single user account info(json object) or a list of user account info | | callback | function | callback function, returns error if exist |

accountDB.readUserInfofromAccountDB(accNameList) ⇒ Promise Object

Read user account information from account database, returns a promise object

Kind: instance method of AccountDB

| Param | Type | Description | | --- | --- | --- | | accNameList | Array, String | single user account address(string) or a list of user account addresses |

accountDB.isAccountDBEmpty(callback) ⇒ None

Check whether the account database is empty

Kind: instance method of AccountDB

| Param | Type | Description | | --- | --- | --- | | callback | function | callback function, callback arguments (err, emptyFlag) |

accountDB.getAccountDB(callback) ⇒ None

Get all the data in account database

Kind: instance method of AccountDB

| Param | Type | Description | | --- | --- | --- | | callback | function | callback function, callback arguments (err, block object array) |

accountDB.isAccountInAccountDB(accName, callback) ⇒ None

Check whether an account is in AccountDB

Kind: instance method of AccountDB

| Param | Type | Description | | --- | --- | --- | | accName | String | account name | | callback | function | callback function, callback arguments (err, block object array) |

ProductDB Methods

new ProductDB(config)

| Param | Type | Description | | --- | --- | --- | | config | Object | contains the relative path for storing database |

productDB.writeTxBlockToDB(txData, callback) ⇒ None

Write single transaction block or full transaction chain data to product database

Kind: instance method of ProductDB

| Param | Type | Description | | --- | --- | --- | | txData | Array, Object | single tx block data or full transaction block chain data | | callback | function | callback function, returns error if exist |

productDB.isProductDBEmpty(callback) ⇒ None

Check whether the product database is empty

Kind: instance method of ProductDB

| Param | Type | Description | | --- | --- | --- | | callback | function | callback function, callback arguments (err, emptyFlag) |

productDB.getProductDB(callback) ⇒ None

Get all the data in product database

Kind: instance method of ProductDB

| Param | Type | Description | | --- | --- | --- | | callback | function | callback function, callback arguments (err, block object array) |