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from .wallet import JSONRPCWallet | ||
from .daemon import JSONRPCDaemon | ||
from .exceptions import RPCError, Unauthorized, MethodNotFound |
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from __future__ import unicode_literals | ||
import binascii | ||
from datetime import datetime | ||
import json | ||
import logging | ||
import requests | ||
import six | ||
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from ...block import Block | ||
from ...const import NET_MAIN, NET_TEST, NET_STAGE | ||
from ...numbers import from_atomic | ||
from ...transaction import Transaction | ||
from .exceptions import RPCError, Unauthorized | ||
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_log = logging.getLogger(__name__) | ||
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RESTRICTED_MAX_TRANSACTIONS = 100 | ||
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class JSONRPCDaemon(object): | ||
""" | ||
JSON RPC backend for Monero daemon | ||
:param protocol: `http` or `https` | ||
:param host: host name or IP | ||
:param port: port number | ||
:param path: path for JSON RPC requests (should not be changed) | ||
:param timeout: request timeout | ||
:param verify_ssl_certs: verify SSL certificates when connecting | ||
:param proxy_url: a proxy to use | ||
""" | ||
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_net = None | ||
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def __init__(self, protocol='http', host='127.0.0.1', port=18081, path='/json_rpc', | ||
user='', password='', timeout=30, verify_ssl_certs=True, proxy_url=None): | ||
self.url = '{protocol}://{host}:{port}'.format( | ||
protocol=protocol, | ||
host=host, | ||
port=port) | ||
_log.debug("JSONRPC daemon backend URL: {url}".format(url=self.url)) | ||
self.user = user | ||
self.password = password | ||
self.timeout = timeout | ||
self.verify_ssl_certs = verify_ssl_certs | ||
self.proxies = {protocol: proxy_url} | ||
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def _set_net(self, info): | ||
if info['mainnet']: | ||
self._net = NET_MAIN | ||
if info['testnet']: | ||
self._net = NET_TEST | ||
if info['stagenet']: | ||
self._net = NET_STAGE | ||
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def info(self): | ||
info = self.raw_jsonrpc_request('get_info') | ||
self._set_net(info) | ||
return info | ||
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def net(self): | ||
if self._net: | ||
return self._net | ||
self.info() | ||
return self._net | ||
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def send_transaction(self, blob, relay=True): | ||
res = self.raw_request('/sendrawtransaction', { | ||
'tx_as_hex': six.ensure_text(binascii.hexlify(blob)), | ||
'do_not_relay': not relay}) | ||
if res['status'] == 'OK': | ||
return res | ||
raise exceptions.TransactionBroadcastError( | ||
"{status}: {reason}".format(**res), | ||
details=res) | ||
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def mempool(self): | ||
res = self.raw_request('/get_transaction_pool', {}) | ||
txs = [] | ||
for tx in res.get('transactions', []): | ||
txs.append(Transaction( | ||
hash=tx['id_hash'], | ||
fee=from_atomic(tx['fee']), | ||
timestamp=datetime.fromtimestamp(tx['receive_time']), | ||
blob=binascii.unhexlify(tx['tx_blob']), | ||
json=json.loads(tx['tx_json']), | ||
confirmations=0)) | ||
return txs | ||
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def headers(self, start_height, end_height=None): | ||
end_height = end_height or start_height | ||
res = self.raw_jsonrpc_request('get_block_headers_range', { | ||
'start_height': start_height, | ||
'end_height': end_height}) | ||
if res['status'] == 'OK': | ||
return res['headers'] | ||
raise exceptions.BackendException(res['status']) | ||
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def block(self, bhash=None, height=None): | ||
data = {} | ||
if bhash: | ||
data['hash'] = bhash | ||
if height: | ||
data['height'] = height | ||
res = self.raw_jsonrpc_request('get_block', data) | ||
if res['status'] == 'OK': | ||
bhdr = res['block_header'] | ||
sub_json = json.loads(res['json']) | ||
data = { | ||
'blob': res['blob'], | ||
'hash': bhdr['hash'], | ||
'height': bhdr['height'], | ||
'timestamp': datetime.fromtimestamp(bhdr['timestamp']), | ||
'version': (bhdr['major_version'], bhdr['minor_version']), | ||
'difficulty': bhdr['difficulty'], | ||
'nonce': bhdr['nonce'], | ||
'orphan': bhdr['orphan_status'], | ||
'prev_hash': bhdr['prev_hash'], | ||
'reward': from_atomic(bhdr['reward']), | ||
'transactions': self.transactions( | ||
[bhdr['miner_tx_hash']] + sub_json['tx_hashes']), | ||
} | ||
return Block(**data) | ||
raise exceptions.BackendException(res['status']) | ||
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def transactions(self, hashes): | ||
""" | ||
Returns a list of transactions for given hashes. Automatically chunks the request | ||
into amounts acceptable by a restricted RPC server. | ||
""" | ||
hashes = list(hashes) | ||
result = [] | ||
while len(hashes): | ||
result.extend(self._do_get_transactions(hashes[:RESTRICTED_MAX_TRANSACTIONS])) | ||
hashes = hashes[RESTRICTED_MAX_TRANSACTIONS:] | ||
return result | ||
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def _do_get_transactions(self, hashes): | ||
res = self.raw_request('/get_transactions', { | ||
'txs_hashes': hashes, | ||
'decode_as_json': True}) | ||
if res['status'] != 'OK': | ||
raise exceptions.BackendException(res['status']) | ||
txs = [] | ||
for tx in res.get('txs', []): | ||
as_json = json.loads(tx['as_json']) | ||
fee = as_json.get('rct_signatures', {}).get('txnFee') | ||
txs.append(Transaction( | ||
hash=tx['tx_hash'], | ||
fee=from_atomic(fee) if fee else None, | ||
height=None if tx['in_pool'] else tx['block_height'], | ||
timestamp=datetime.fromtimestamp( | ||
tx['block_timestamp']) if 'block_timestamp' in tx else None, | ||
blob=binascii.unhexlify(tx['as_hex']), | ||
json=as_json)) | ||
return txs | ||
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def raw_request(self, path, data): | ||
hdr = {'Content-Type': 'application/json'} | ||
_log.debug(u"Request: {path}\nData: {data}".format( | ||
path=path, | ||
data=json.dumps(data, indent=2, sort_keys=True))) | ||
auth = requests.auth.HTTPDigestAuth(self.user, self.password) | ||
rsp = requests.post( | ||
self.url + path, headers=hdr, data=json.dumps(data), auth=auth, | ||
timeout=self.timeout, verify=self.verify_ssl_certs, proxies=self.proxies) | ||
if rsp.status_code != 200: | ||
raise RPCError("Invalid HTTP status {code} for path {path}.".format( | ||
code=rsp.status_code, | ||
path=path)) | ||
result = rsp.json() | ||
_ppresult = json.dumps(result, indent=2, sort_keys=True) | ||
_log.debug(u"Result:\n{result}".format(result=_ppresult)) | ||
return result | ||
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def raw_jsonrpc_request(self, method, params=None): | ||
hdr = {'Content-Type': 'application/json'} | ||
data = {'jsonrpc': '2.0', 'id': 0, 'method': method, 'params': params or {}} | ||
_log.debug(u"Method: {method}\nParams:\n{params}".format( | ||
method=method, | ||
params=json.dumps(params, indent=2, sort_keys=True))) | ||
auth = requests.auth.HTTPDigestAuth(self.user, self.password) | ||
rsp = requests.post( | ||
self.url + '/json_rpc', headers=hdr, data=json.dumps(data), auth=auth, | ||
timeout=self.timeout, verify=self.verify_ssl_certs, proxies=self.proxies) | ||
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if rsp.status_code == 401: | ||
raise Unauthorized("401 Unauthorized. Invalid RPC user name or password.") | ||
elif rsp.status_code != 200: | ||
raise RPCError("Invalid HTTP status {code} for method {method}.".format( | ||
code=rsp.status_code, | ||
method=method)) | ||
result = rsp.json() | ||
_ppresult = json.dumps(result, indent=2, sort_keys=True) | ||
_log.debug(u"Result:\n{result}".format(result=_ppresult)) | ||
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if 'error' in result: | ||
err = result['error'] | ||
_log.error(u"JSON RPC error:\n{result}".format(result=_ppresult)) | ||
raise RPCError( | ||
"Method '{method}' failed with RPC Error of unknown code {code}, " | ||
"message: {message}".format(method=method, data=data, result=result, **err)) | ||
return result['result'] |
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from ... import exceptions | ||
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class RPCError(exceptions.BackendException): | ||
pass | ||
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class Unauthorized(RPCError): | ||
pass | ||
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class MethodNotFound(RPCError): | ||
pass |
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