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December 9, 2021 16:20
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By using the Covalent APIs, given an NFT contract and chain id, fetch all token ids and prepare an array of urls that call Get External NFT Metadata to be passed into the body for the batch query endpoint.
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import requests | |
import time | |
import urllib3 | |
def check_internet(url): | |
try: | |
req = urllib3.PoolManager().request("GET", url) | |
if str(req.status) != "500": | |
if str(req.status) != "404": | |
print(req.status) | |
return True | |
else: | |
print(req.status) | |
return False | |
except urllib3.exceptions.HTTPError as err: | |
print(err) | |
return False | |
contract_address = "0x60f80121c31a0d46b5279700f9df786054aa5ee5" | |
chain_id = 1 | |
API_KEY = "ckey_covalent_scraper" | |
page_number = 0 | |
page_size = 200_000 | |
get_token_ids_url = "https://api.covalenthq.com/v1/" + str(chain_id) + "/tokens/" + contract_address + "/nft_token_ids/" | |
has_more = True | |
start = time.time() | |
while has_more: | |
conn = check_internet("https://api.covalenthq.com/") | |
if conn is True: | |
try: | |
start_request_time = time.time() | |
payload = { | |
"key": API_KEY, | |
"page-size": page_size, | |
"page-number": page_number, | |
"block-signed-at-asc": True | |
} | |
print("Getting page: " + str(page_number) + " from: " + get_token_ids_url + "....") | |
raw_data = requests.get(url=get_token_ids_url, params=payload) | |
data_json = raw_data.json() | |
string_comma = "," | |
string_builder = "[" | |
for item in data_json["data"]["items"]: | |
token_id = item["token_id"] | |
string_builder += "\"https://api.covalenthq.com/v1/" + str(chain_id) + "/tokens/" + contract_address + "/nft_metadata/" + str(token_id) + "/\"" | |
string_builder += string_comma | |
string_builder = string_builder[:-1] | |
string_builder += "]" | |
print(string_builder) | |
file_name = contract_address + "_" + str(page_number) + "_" + str(page_size) + "_token_ids.json" | |
f = open(file_name, "w") | |
f.write(string_builder) | |
f.close() | |
print("Wrote: " + file_name) | |
has_more = bool(data_json["data"]["pagination"]["has_more"]) | |
except: | |
print("ERR: \n" + string_builder) | |
page_number = page_number - 1 | |
time.sleep(20) | |
print("Has more: " + str(has_more)) | |
page_number = page_number + 1 | |
end = time.time() | |
elapsed_time = end - start | |
request_time = end - start_request_time | |
print("Request time: " + str(request_time)) | |
print("Elapsed time: " + str(elapsed_time)) | |
else: | |
time.sleep(30) |
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Good point, all add that. Thanks