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#!/usr/bin/python
import requests
import os
import os.path
import logging
import time
import json
import sys
import platform
def download_file(url):
local_filename = url.split('/')[-1]
# NOTE the stream=True parameter
r = requests.get(url, stream=True)
if r.status_code == 200:
with open(local_filename, 'wb') as f:
for chunk in r.iter_content(chunk_size=1024):
if chunk: # filter out keep-alive new chunks
f.write(chunk)
logging.debug("Download '%s'", local_filename)
return local_filename
else:
logging.debug("Couldn't download file")
return ""
def handle_post_result(r):
# We should get a 'Location' header from the POST request.
if 'location' not in r.headers:
logging.debug("No 'location' in headers")
return
uri = server_base + r.headers['location']
delay = int(r.headers['retry-after'])
result_found = False
while True:
logging.debug("Waiting %d seconds...", delay)
time.sleep(delay)
# We want to handle redirects ourselves just to be sure
# everything is working properly.
r = requests.get(uri, allow_redirects=False)
logging.debug("Status code: %d", r.status_code)
if r.status_code == 200:
logging.debug("200 Body: %s", r.text)
# The body should be valid JSON
try:
jd = json.loads(r.text)
except ValueError:
logging.debug("Couldn't parse JSON data")
elif r.status_code == 303:
logging.debug("303 Body: %s", r.text)
# The body should be valid JSON
try:
jd = json.loads(r.text)
except ValueError:
logging.debug("Couldn't parse JSON data")
uri = server_base + r.headers['location']
result_found = True
break
else:
logging.debug("Unhandled status code: %d", r.status_code)
sys.exit(-1)
if not result_found:
logging.debug("Didn't see 303 status code")
sys.exit(-1)
# Get the result info
r = requests.get(uri)
if r.status_code == 200:
logging.debug("Body: %s", r.text)
# The body should be valid JSON
try:
jd = json.loads(r.text)
except ValueError:
logging.debug("Couldn't parse JSON data")
sys.exit(-1)
if 'uuid' not in jd:
logging.debug("Couldn't find 'uuid' in JSON data")
sys.exit(-1)
uuid = jd['uuid']
# Download the stdout and stderr file items.
stdout_file = ''
stderr_file = ''
if 'stdout_location' in jd:
uri = '%s/%s' % (server_base, jd['stdout_location'])
stdout_file = download_file(uri)
else:
logging.debug("Couldn't find 'stdout' in JSON data")
sys.exit(-1)
if 'stderr_location' in jd:
uri = '%s/%s' % (server_base, jd['stderr_location'])
stderr_file = download_file(uri)
else:
logging.debug("Couldn't find 'stderr' in JSON data")
sys.exit(-1)
# Here we want to download each item in the optional 'files'
# array. This is optional since not all stap invocations
# produce an output file (like a module).
if 'files' in jd:
for item in jd['files']:
if 'location' in item and 'mode' in item:
uri = '%s/%s' % (server_base, item['location'])
download_file(uri)
os.chmod(os.path.basename(item['location']), item['mode'])
else:
logging.debug("File info '%s' isn't complete" % item)
# Display the stderr and stdout files, then delete them.
if len(stderr_file):
f = open(stderr_file)
sys.stderr.writelines(f.readlines())
f.close()
os.remove(stderr_file)
if len(stdout_file):
f = open(stdout_file)
sys.stdout.writelines(f.readlines())
f.close()
os.remove(stdout_file)
else:
logging.debug("Couldn't get result")
sys.exit(-1)
return
# These two lines enable debugging at httplib level (requests->urllib3->http.client)
# You will see the REQUEST, including HEADERS and DATA, and RESPONSE with HEADERS but without DATA.
# The only thing missing will be the response.body which is not logged.
try:
import http.client as http_client
except ImportError:
# Python 2
import httplib as http_client
http_client.HTTPConnection.debuglevel = 1
logging.basicConfig(level=logging.DEBUG)
server_base = 'http://localhost:1234'
r = requests.get(server_base)
#print r.headers['content-type']
distro_name = platform.linux_distribution()[0]
distro_version = platform.linux_distribution()[1]
logging.debug("distro '%s'", distro_name)
# For now, just pass over the kernel version and arch and a basic command line.
payload = (('kver', os.uname()[2]), ('arch', os.uname()[4]),
('distro_name', distro_name), ('distro_version', distro_version),
('cmd_args', '-vp4'), ('cmd_args', '-e'),
('cmd_args', 'probe begin { exit() }'))
r = requests.post(server_base + '/builds', data=payload)
handle_post_result(r)
#
# Now lets try uploading a file along with the POST.
#
# FIXME: How do we know we need to send the file?
#
payload = (('kver', os.uname()[2]), ('arch', os.uname()[4]),
('distro_name', distro_name), ('distro_version', distro_version),
('cmd_args', '-v'), ('cmd_args', 'hello_world.stp'))
files = {'files': open('hello_world.stp', 'rb')}
r = requests.post(server_base + '/builds', data=payload, files=files)
handle_post_result(r)
#
# Lets try a "stap -L".
#
payload = (('kver', os.uname()[2]), ('arch', os.uname()[4]),
('distro_name', distro_name), ('distro_version', distro_version),
('cmd_args', '-L'), ('cmd_args', 'kernel.function("sys_open")'))
r = requests.post(server_base + '/builds', data=payload)
handle_post_result(r)
logging.debug("Exiting")
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