예제 #1
0
    def get_number_of_transactions_for_address(self, addr):
        validate.check_address_and_die(addr, THIS_FILE)
        urlbuilder = BlockchainInfoURLBuilder(
            self.config.BLOCKCHAIN_INFO_API_KEY)
        url = urlbuilder.get_number_of_transactions_for_address(addr)

        response = self.throttled_fetch_url(url)
        try:
            jsonObj = json.loads(response)
            n_tx = jsonObj['n_tx']
            if not n_tx:
                #panic
                msg = ("Expected 'n_tx' from JSON response but found none: "
                       "'%s'") % (n_tx, str(response))
                logger.log_and_die(msg)
            try:
                int(n_tx)
            except ValueError:
                msg = (
                    "Expected integer value for 'n_tx' in JSON response but "
                    "found: '%s'") % (str(response))
                logger.log_and_die(msg)
            return n_tx
        except ValueError as e:
            #Something weird came back from the API despite HTTP 200 OK, panic
            msg = ("Expected a JSON response for address '%s', instead "
                   "received '%s'") % (addr, str(response))
            logger.log_and_die(msg)
    def get_number_of_transactions_for_address(self, addr):
        validate.check_address_and_die(addr, THIS_FILE)
        urlbuilder = BlockchainInfoURLBuilder(
            self.config.BLOCKCHAIN_INFO_API_KEY)
        url = urlbuilder.get_number_of_transactions_for_address(addr)

        response = self.throttled_fetch_url(url)
        try:
            jsonObj = json.loads(response)
            n_tx = jsonObj['n_tx']
            if not n_tx:
                #panic
                msg = ("Expected 'n_tx' from JSON response but found none: "
                       "'%s'") % (n_tx, str(response))
                logger.log_and_die(msg)
            try:
                int(n_tx)
            except ValueError:
                msg = ("Expected integer value for 'n_tx' in JSON response but "
                       "found: '%s'") % (str(response))
                logger.log_and_die(msg)
            return n_tx
        except ValueError as e:
            #Something weird came back from the API despite HTTP 200 OK, panic
            msg = ("Expected a JSON response for address '%s', instead "
                   "received '%s'") % (addr, str(response))
            logger.log_and_die(msg)
    def _does_output_have_prior_tx_history(self, addr, current_tx_id,
                                           block_height, benchmarker=None):
        """#Helper function for `process_tx`."""

        dprint("Address to be validated: %s" % addr)
        validate.check_address_and_die(addr, THIS_FILE)
        if self.block_reader.is_first_transaction_for_address(
                addr, current_tx_id, block_height, benchmarker):
            return False
        else:
            return True
예제 #4
0
    def is_first_transaction_for_address(self,
                                         addr,
                                         tx_id,
                                         block_height,
                                         benchmarker=None):
        validate.check_address_and_die(addr, THIS_FILE)

        #First, check the local database cache for this address. If it's not
        #   there, add it to the cache as an address that has been seen, and
        #   then do API lookups to determine whether this tx is the address's
        #   first.
        if self.database_connector.has_address_been_seen_cache_if_not(
                addr, block_height):
            if benchmarker is not None:
                benchmarker.increment_blockchain_info_queries_avoided_by_caching(
                )
                benchmarker.increment_blockchain_info_queries_avoided_by_caching(
                )
            return False

        n_tx = self.get_number_of_transactions_for_address(addr)
        offset = int(n_tx) - 1

        urlbuilder = BlockchainInfoURLBuilder(
            self.config.BLOCKCHAIN_INFO_API_KEY)
        url = urlbuilder.get_tx_for_address_at_offset(addr, offset)

        response = self.throttled_fetch_url(url)
        try:
            jsonObj = json.loads(response)
            tx_list = jsonObj['txs']
            if not tx_list:
                #address has no history
                return True
            if tx_list[0]:
                #Check if the first tx is the tx in question
                first_tx_id = tx_list[0]['hash']
                if first_tx_id == tx_id:
                    return True
                else:
                    return False
            else:
                #Something wrong, this tx list seems to be neither empty nor
                #   contains a first tx, panic!
                msg = ("Expected zero or one transactions for address '%s'" %
                       addr)
                logger.log_and_die(msg)
        except ValueError as e:
            #Something weird came back from the API despite HTTP 200 OK, panic
            msg = ("Expected a JSON response for address '%s', instead "
                   "received '%s'") % (addr, str(response))
            logger.log_and_die(msg)
예제 #5
0
    def _does_output_have_prior_tx_history(self,
                                           addr,
                                           current_tx_id,
                                           block_height,
                                           benchmarker=None):
        """#Helper function for `process_tx`."""

        dprint("Address to be validated: %s" % addr)
        validate.check_address_and_die(addr, THIS_FILE)
        if self.block_reader.is_first_transaction_for_address(
                addr, current_tx_id, block_height, benchmarker):
            return False
        else:
            return True
    def is_first_transaction_for_address(self, addr, tx_id, block_height,
                                         benchmarker = None):
        validate.check_address_and_die(addr, THIS_FILE)

        #First, check the local database cache for this address. If it's not
        #   there, add it to the cache as an address that has been seen, and
        #   then do API lookups to determine whether this tx is the address's
        #   first.
        if self.database_connector.has_address_been_seen_cache_if_not(addr,
                                                                      block_height):
            if benchmarker is not None:
                benchmarker.increment_blockchain_info_queries_avoided_by_caching()
                benchmarker.increment_blockchain_info_queries_avoided_by_caching()
            return False

        n_tx = self.get_number_of_transactions_for_address(addr)
        offset = int(n_tx) - 1

        urlbuilder = BlockchainInfoURLBuilder(
            self.config.BLOCKCHAIN_INFO_API_KEY)
        url = urlbuilder.get_tx_for_address_at_offset(addr, offset)

        response = self.throttled_fetch_url(url)
        try:
            jsonObj = json.loads(response)
            tx_list = jsonObj['txs']
            if not tx_list:
                #address has no history
                return True
            if tx_list[0]:
                #Check if the first tx is the tx in question
                first_tx_id = tx_list[0]['hash']
                if first_tx_id == tx_id:
                    return True
                else:
                    return False
            else:
                #Something wrong, this tx list seems to be neither empty nor
                #   contains a first tx, panic!
                msg = ("Expected zero or one transactions for address '%s'" %
                    addr)
                logger.log_and_die(msg)
        except ValueError as e:
            #Something weird came back from the API despite HTTP 200 OK, panic
            msg = ("Expected a JSON response for address '%s', instead "
                   "received '%s'") % (addr, str(response))
            logger.log_and_die(msg)
 def get_tx_for_address_at_offset(self, address, offset):
     validate.check_address_and_die(address, THIS_FILE)
     validate.check_int_and_die(offset, 'offset', THIS_FILE)
     return ("https://blockchain.info/address/%s?format=json&offset=%d%s" %
         (address, offset, self.api_key_str))
예제 #8
0
 def get_tx_for_address_at_offset(self, address, offset):
     validate.check_address_and_die(address, THIS_FILE)
     validate.check_int_and_die(offset, 'offset', THIS_FILE)
     return ("https://blockchain.info/address/%s?format=json&offset=%d%s" %
             (address, offset, self.api_key_str))