Parsing Ethereum blockchains to sqlite datas: Effective approach
As the poplarity of cryptocurrencies and blockchain continues to grow, the analysis of blockchains into a relations, soch as SQLite3 ant for various purposes, souch as analysis, research and development. In this article, we will have an effective wey of analyzing
Why sqlite3?
Sqlite3 is an excellent choice for this task because of her:
1
- SQLếTividacition
: Supports SQL syntax, white facilitates writing effective queeries.
3
Support for several databases : Can handle multipletabases at the same.
- Light and fast : SQLITE3 is optimized for performance.
Blockchain Ethereum data strocture
Before we dive the dedeals of the implementation, let’s unit they are structured blockchaina ethereum:
- Blockchain consists of a block list (eg «Genesisblock»,
blockchain1etc.).
- Each block conveins:
* Time stamp
* Hash previous block (ie J. «Parenhash)
* Number of transactions in the block (NumtransactionCount)
* List of transactions within the block (transactions”
Implementation of Blockchain Analyzer
We will use Python as is programming language, allong with SQLite3 for data3 for operations. We are also to the «ETH-BLOCKS» library to the load on the blockchain ethereum.
`Python
Import sqlite3
From Datetsime Import Datetsme
Blockparser class:
Def __init __ (self):
self.conn = sqlitee3.Connect (': memory:')
self.cursor = self.conn.cursor ()
Def Parse_blockchain (self, blockchain_url):
Load the first block from URL Blockchain
block = et_blocks.get (blockchain_url)
If the block is it not:
false
Create a table for a dataabase
Self.Create_table ()
Insert the Data in the database
self.insert_data (block.timestamp, block.hash, block.parentash, block.numtransactionCount, block.traansactions)
Return Truth
Def Create_table (self):
"" "Create a table with the necessary columns." "
sql = " " " "
Create a table there is no blockchain_data (
ID integrate the Primary Key Autoincrement,
Text Timesstamp is not null,
Parent_hash textt is not null,
NUM_TRANSACTIONS INTERGER NOT NULL,
Transactions textt
);
"" ""
self.cursor.exeque (SQL)
self.conn.commit ()
Def insert_data (self, time stamp, hash, paranhash, numtransactions, transaction):
"" Insert the Data in the Blockchain. ""
sql = " " " "
Insert in blockchain_data (Timesstamp, Parent_hash, Num_Transactions, Transactions)
Values (?,?,?,?);
"" ""
self.curs.execte (SQL, (time stamp, hash, numtransactions, transactions))
self.conn.commit ()
Example of the use
Parser = blockparser ()
URL = '
If parser.parse_blockchain (URL):
Print (“Blockchain succesfullly analyzed!”)
otherwise:
Print (“Blow Blockchain Analyzing.”)
Optimization of efficience
While the implementation provided the effactive for cases, thee are more than the optimizations that can be improvedr improve performance:
1.
20 cheme souch as PostgRESQL or MySQL.
3.