Add chains crawler for seer.

.gitignore

@@ -23,3 +23,194 @@ go.work
 # Seer ignores
 seer
 .vscode/
+
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+### VisualStudioCode Patch ###
+# Ignore all local history of files
+.history
+.ionide
+
+# End of https://www.toptal.com/developers/gitignore/api/python,visualstudiocode
+
+# Envionments
+.seer/
+.venv/
+.env/
+
+# Environment variables
+dev.env
+test.env
+prod.env
+moonstreamdb.env
+docker.env
+docker.dev.env
+docker.test.dev
+docker.prod.env
+docker.moonstreamdb.env
+
+.secrets/
+
+# Alembic migrations
+alembic.test.ini
+alembic.dev.ini
+alembic.prod.ini
+alembic.moonstreamdb.ini
+alembic.docker.ini
+
+# Schematic
+srv/
+.schematic.env
+
+# Custom
+scratch/

blockchain/common/decoding.go

@@ -0,0 +1,137 @@
+package common
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+	// "time"
+)
+
+type BlockJson struct {
+	Difficulty       int64  `json:"difficulty"`
+	ExtraData        string `json:"extraData"`
+	GasLimit         int64  `json:"gasLimit"`
+	GasUsed          int64  `json:"gasUsed"`
+	Hash             string `json:"hash"`
+	LogsBloom        string `json:"logsBloom"`
+	Miner            string `json:"miner"`
+	MixHash          string `json:"mixHash"`
+	Nonce            string `json:"nonce"`
+	BlockNumber      int64  `json:"number"`
+	ParentHash       string `json:"parentHash"`
+	ReceiptRoot      string `json:"receiptRoot"`
+	Sha3Uncles       string `json:"sha3Uncles"`
+	StateRoot        string `json:"stateRoot"`
+	Timestamp        int64  `json:"timestamp"`
+	TotalDifficulty  string `json:"totalDifficulty"`
+	TransactionsRoot string `json:"transactionsRoot"`
+	Uncles           string `json:"uncles"`
+	Size             int32  `json:"size"`
+	BaseFeePerGas    string `json:"baseFeePerGas"`
+	IndexedAt        int64  `json:"indexed_at"`
+}
+
+type SingleTransactionJson struct {
+	AccessList           []AccessList `json:"accessList"`
+	BlockHash            string       `json:"blockHash"`
+	BlockNumber          int64        `json:"blockNumber"`
+	ChainId              string       `json:"chainId"`
+	FromAddress          string       `json:"from"`
+	Gas                  string       `json:"gas"`
+	GasPrice             string       `json:"gasPrice"`
+	Hash                 string       `json:"hash"`
+	Input                string       `json:"input"`
+	MaxFeePerGas         string       `json:"maxFeePerGas"`
+	MaxPriorityFeePerGas string       `json:"maxPriorityFeePerGas"`
+	Nonce                string       `json:"nonce"`
+	R                    string       `json:"r"`
+	S                    string       `json:"s"`
+	ToAddress            string       `json:"to"`
+	TransactionIndex     int64        `json:"transactionIndex"`
+	TransactionType      int32        `json:"type"`
+	Value                string       `json:"value"`
+	YParity              string       `json:"yParity"`
+	IndexedAt            int64        `json:"indexed_at"`
+	BlockTimestamp       int64        `json:"block_timestamp"`
+}
+
+type AccessList struct {
+	Address     string   `json:"address"`
+	StorageKeys []string `json:"storageKeys"`
+}
+
+// SingleEvent represents a single event within a transaction
+type SingleEventJson struct {
+	Address          string   `json:"address"`
+	Topics           []string `json:"topics"`
+	Data             string   `json:"data"`
+	BlockNumber      int64    `json:"blockNumber"`
+	TransactionHash  string   `json:"transactionHash"`
+	BlockHash        string   `json:"blockHash"`
+	Removed          bool     `json:"removed"`
+	LogIndex         int64    `json:"logIndex"`
+	TransactionIndex int64    `json:"transactionIndex"`
+}
+
+// ReadJsonBlocks reads blocks from a JSON file
+func ReadJsonBlocks() []*BlockJson {
+	file, err := os.Open("data/blocks_go.json")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer file.Close()
+
+	var blocks []*BlockJson
+	decoder := json.NewDecoder(file)
+	err = decoder.Decode(&blocks)
+	if err != nil {
+		fmt.Println("error:", err)
+	}
+
+	return blocks
+}
+
+// ReadJsonTransactions reads transactions from a JSON file
+func ReadJsonTransactions() []*SingleTransactionJson {
+
+	file, err := os.Open("data/transactions_go.json")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer file.Close()
+
+	var transactions []*SingleTransactionJson
+	decoder := json.NewDecoder(file)
+	err = decoder.Decode(&transactions)
+	if err != nil {
+		fmt.Println("error:", err)
+	}
+
+	return transactions
+}
+
+// ReadJsonEventLogs reads event logs from a JSON file
+func ReadJsonEventLogs() []*SingleEventJson {
+
+	file, err := os.Open("data/event_logs_go.json")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer file.Close()
+
+	var eventLogs []*SingleEventJson
+
+	decoder := json.NewDecoder(file)
+
+	fmt.Println("decoder:", decoder)
+
+	err = decoder.Decode(&eventLogs)
+	if err != nil {
+		fmt.Println("error:", err)
+	}
+
+	fmt.Println("eventLogs:", eventLogs[0])
+
+	return eventLogs
+}

blockchain/common/ecoding.go

@@ -0,0 +1,17 @@
+package common
+
+import "math/big"
+
+// BlockchainHandler defines the interface for handling blockchain data fetching.
+type BlockchainHandler interface {
+	FetchData(blockNumber *big.Int) ([]EventData, error)
+}
+
+// EventData outlines the structure for blockchain event data.
+type EventData struct {
+	// Common fields...
+	BlockNumber uint64
+	Data        []byte
+	ChainID     string
+	Extra       interface{} // Use for blockchain-specific additional data
+}