mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-20 08:40:50 +00:00
299 lines
8.8 KiB
Python
299 lines
8.8 KiB
Python
#!/usr/bin/env python3
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from http.server import BaseHTTPRequestHandler, HTTPServer
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import socket
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import sys
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import re
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import threading
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import os
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import traceback
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import urllib.request
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import subprocess
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def is_ipv6(host):
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try:
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socket.inet_aton(host)
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return False
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except:
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return True
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def get_local_port(host, ipv6):
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if ipv6:
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family = socket.AF_INET6
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else:
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family = socket.AF_INET
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with socket.socket(family) as fd:
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fd.bind((host, 0))
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return fd.getsockname()[1]
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CLICKHOUSE_HOST = os.environ.get("CLICKHOUSE_HOST", "localhost")
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CLICKHOUSE_PORT_HTTP = os.environ.get("CLICKHOUSE_PORT_HTTP", "8123")
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# Server returns this JSON response.
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SERVER_JSON_RESPONSE = """{
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"login": "ClickHouse",
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"id": 54801242,
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"name": "ClickHouse",
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"company": null
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}"""
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PAYLOAD_LEN = len(SERVER_JSON_RESPONSE)
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EXPECTED_ANSWER = """{\\n\\t"login": "ClickHouse",\\n\\t"id": 54801242,\\n\\t"name": "ClickHouse",\\n\\t"company": null\\n}"""
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#####################################################################################
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# This test starts an HTTP server and serves data to clickhouse url-engine based table.
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# The objective of this test is to check the ClickHouse server provides a User-Agent
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# with HTTP requests.
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# In order for it to work ip+port of http server (given below) should be
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# accessible from clickhouse server.
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#####################################################################################
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# IP-address of this host accessible from the outside world. Get the first one
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HTTP_SERVER_HOST = (
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subprocess.check_output(["hostname", "-i"]).decode("utf-8").strip().split()[0]
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)
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IS_IPV6 = is_ipv6(HTTP_SERVER_HOST)
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HTTP_SERVER_PORT = get_local_port(HTTP_SERVER_HOST, IS_IPV6)
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# IP address and port of the HTTP server started from this script.
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HTTP_SERVER_ADDRESS = (HTTP_SERVER_HOST, HTTP_SERVER_PORT)
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if IS_IPV6:
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HTTP_SERVER_URL_STR = (
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"http://"
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+ f"[{str(HTTP_SERVER_ADDRESS[0])}]:{str(HTTP_SERVER_ADDRESS[1])}"
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+ "/"
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)
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else:
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HTTP_SERVER_URL_STR = (
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"http://" + f"{str(HTTP_SERVER_ADDRESS[0])}:{str(HTTP_SERVER_ADDRESS[1])}" + "/"
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)
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def get_ch_answer(query):
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host = CLICKHOUSE_HOST
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if IS_IPV6:
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host = f"[{host}]"
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url = os.environ.get(
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"CLICKHOUSE_URL",
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"http://{host}:{port}".format(host=CLICKHOUSE_HOST, port=CLICKHOUSE_PORT_HTTP),
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)
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return urllib.request.urlopen(url, data=query.encode()).read().decode()
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def check_answers(query, answer):
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ch_answer = get_ch_answer(query)
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if ch_answer.strip() != answer.strip():
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print("FAIL on query:", query, file=sys.stderr)
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print("Expected answer:", answer, file=sys.stderr)
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print("Fetched answer :", ch_answer, file=sys.stderr)
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raise Exception("Fail on query")
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BYTE_RANGE_RE = re.compile(r"bytes=(\d+)-(\d+)?$")
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def parse_byte_range(byte_range):
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"""Returns the two numbers in 'bytes=123-456' or throws ValueError.
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The last number or both numbers may be None.
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"""
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if byte_range.strip() == "":
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return None, None
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m = BYTE_RANGE_RE.match(byte_range)
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if not m:
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raise ValueError(f"Invalid byte range {byte_range}")
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first, last = [x and int(x) for x in m.groups()]
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if last and last < first:
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raise ValueError(f"Invalid byte range {byte_range}")
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return first, last
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# Server with check for User-Agent headers.
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class HttpProcessor(BaseHTTPRequestHandler):
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allow_range = False
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range_used = False
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get_call_num = 0
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responses_to_get = []
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def send_head(self, from_get=False):
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if self.headers["Range"] and HttpProcessor.allow_range:
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try:
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self.range = parse_byte_range(self.headers["Range"])
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except ValueError as e:
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self.send_error(400, "Invalid byte range")
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return None
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else:
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self.range = None
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if self.range:
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first, last = self.range
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else:
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first, last = None, None
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if first == None:
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first = 0
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payload = SERVER_JSON_RESPONSE.encode()
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payload_len = len(payload)
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if first and first >= payload_len:
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self.send_error(416, "Requested Range Not Satisfiable")
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return None
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retry_range_request = (
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first != 0 and from_get is True and len(HttpProcessor.responses_to_get) > 0
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)
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if retry_range_request:
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code = HttpProcessor.responses_to_get.pop()
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if code not in HttpProcessor.responses:
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self.send_response(int(code))
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else:
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self.send_response(206 if HttpProcessor.allow_range else 200)
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self.send_header("Content-type", "application/json")
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if HttpProcessor.allow_range:
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self.send_header("Accept-Ranges", "bytes")
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if last is None or last >= payload_len:
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last = payload_len - 1
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response_length = last - first + 1
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if first or last:
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self.send_header("Content-Range", f"bytes {first}-{last}/{payload_len}")
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self.send_header(
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"Content-Length",
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str(response_length) if HttpProcessor.allow_range else str(payload_len),
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)
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self.end_headers()
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return payload
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def do_HEAD(self):
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self.send_head()
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def do_GET(self):
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result = self.send_head(True)
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if result == None:
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return
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HttpProcessor.get_call_num += 1
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if not self.range:
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self.wfile.write(SERVER_JSON_RESPONSE.encode())
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return
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HttpProcessor.range_used = True
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payload = SERVER_JSON_RESPONSE.encode()
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start, stop = self.range
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if stop == None:
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stop = len(payload) - 1
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if start == None:
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start = 0
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self.wfile.write(SERVER_JSON_RESPONSE.encode()[start : stop + 1])
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def log_message(self, format, *args):
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return
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class HTTPServerV6(HTTPServer):
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address_family = socket.AF_INET6
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def start_server():
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if IS_IPV6:
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httpd = HTTPServerV6(HTTP_SERVER_ADDRESS, HttpProcessor)
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else:
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httpd = HTTPServer(HTTP_SERVER_ADDRESS, HttpProcessor)
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t = threading.Thread(target=httpd.serve_forever)
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return t, httpd
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#####################################################################
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# Testing area.
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#####################################################################
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def test_select(settings):
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global HTTP_SERVER_URL_STR
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query = f"SELECT * FROM url('{HTTP_SERVER_URL_STR}','JSONAsString') SETTINGS {','.join((k+'='+repr(v) for k, v in settings.items()))};"
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check_answers(query, EXPECTED_ANSWER)
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def run_test(allow_range, settings, check_retries=False):
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HttpProcessor.range_used = False
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HttpProcessor.get_call_num = 0
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HttpProcessor.allow_range = allow_range
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if check_retries:
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HttpProcessor.responses_to_get = ["500", "200", "206"]
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retries_num = len(HttpProcessor.responses_to_get)
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t, httpd = start_server()
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t.start()
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test_select(settings)
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download_buffer_size = settings["max_download_buffer_size"]
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expected_get_call_num = (PAYLOAD_LEN - 1) // download_buffer_size + 1
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if allow_range:
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if not HttpProcessor.range_used:
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raise Exception("HTTP Range was not used when supported")
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if check_retries and len(HttpProcessor.responses_to_get) > 0:
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raise Exception(
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"Expected to get http response 500, which had to be retried, but 200 ok returned and then retried"
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)
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if retries_num > 0:
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expected_get_call_num += retries_num - 1
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if expected_get_call_num != HttpProcessor.get_call_num:
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raise Exception(
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f"Invalid amount of GET calls with Range. Expected {expected_get_call_num}, actual {HttpProcessor.get_call_num}"
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)
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else:
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if HttpProcessor.range_used:
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raise Exception("HTTP Range used while not supported")
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httpd.shutdown()
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t.join()
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print("PASSED")
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def main():
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settings = {"max_download_buffer_size": 20}
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# Test Accept-Ranges=False
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run_test(allow_range=False, settings=settings)
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# Test Accept-Ranges=True, parallel download is used
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run_test(allow_range=True, settings=settings)
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# Test Accept-Ranges=True, parallel download is used
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settings = {"max_download_buffer_size": 10}
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run_test(allow_range=True, settings=settings)
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# Test Accept-Ranges=True, parallel download is not used,
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# first get request 500 response,
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# second get request 200ok response,
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# third get request (retry) 206 response.
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settings["max_download_threads"] = 2
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run_test(allow_range=True, settings=settings, check_retries=True)
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if __name__ == "__main__":
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try:
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main()
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except Exception as ex:
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exc_type, exc_value, exc_traceback = sys.exc_info()
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traceback.print_tb(exc_traceback, file=sys.stderr)
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print(ex, file=sys.stderr)
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sys.stderr.flush()
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os._exit(1)
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