initial commit
This commit is contained in:
dave
commit
1ef031e381
|
|
@ -0,0 +1,56 @@
|
|||
#!/usr/bin/env python3
|
||||
|
||||
import os
|
||||
from urllib.parse import parse_qs as _parse_qs
|
||||
from base64 import b64decode
|
||||
import sys
|
||||
import traceback
|
||||
|
||||
def start_response(content_type="text/html", status_code=("200", "OK",), extra_headers=[]):
|
||||
print('Status: %s %s' % (status_code))
|
||||
print("Content-Type: %s" % content_type)
|
||||
for line in extra_headers:
|
||||
print(line)
|
||||
print()
|
||||
sys.stdout.flush()
|
||||
|
||||
|
||||
def parse_qs():
|
||||
# Parse query string to GET dict
|
||||
GET = {}
|
||||
if "QUERY_STRING" in os.environ:
|
||||
GET = _parse_qs(os.environ["QUERY_STRING"])
|
||||
GET = {k:v[0] for k,v in GET.items()}
|
||||
return GET
|
||||
|
||||
class HTTPBasicAuth:
|
||||
username = None
|
||||
password = None
|
||||
def __str__(self):
|
||||
return "<HTTPBasicAuth object username='%s' password='%s'>" % (self.username, self.password)
|
||||
|
||||
def parse_auth():
|
||||
if "HTTP_AUTHORIZATION" in os.environ:
|
||||
authtype, value = os.environ["HTTP_AUTHORIZATION"].split(' ')
|
||||
if authtype == "Basic":
|
||||
auth = HTTPBasicAuth()
|
||||
auth.username, auth.password = b64decode(value).decode().split(":")
|
||||
return auth
|
||||
|
||||
def fulltrace():
|
||||
"""Return the stack trace of the bot as a string"""
|
||||
result = ""
|
||||
result += "\n*** STACKTRACE - START ***\n"
|
||||
code = []
|
||||
for threadId, stack in sys._current_frames().items():
|
||||
code.append("\n# ThreadID: %s" % threadId)
|
||||
for filename, lineno, name, line in traceback.extract_stack(stack):
|
||||
code.append('File: "%s", line %d, in %s' % (filename, lineno, name))
|
||||
if line:
|
||||
code.append(" %s" % (line.strip()))
|
||||
for line in code:
|
||||
result += line + "\n"
|
||||
result += "\n*** STACKTRACE - END ***\n"
|
||||
return result
|
||||
|
||||
# cgi.print_environ()
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
DATADB_ROOT = "/nexus/datadb/backups/"
|
||||
DATADB_TMP = "/nexus/datadb/tmp/"
|
||||
|
|
@ -0,0 +1,83 @@
|
|||
#!/usr/bin/env python3
|
||||
|
||||
import traceback
|
||||
from sys import exit,stdin,stdout
|
||||
import os
|
||||
from os.path import join as pathjoin
|
||||
from os.path import exists,getsize
|
||||
|
||||
from common.cgi import parse_qs,parse_auth,start_response
|
||||
from common.datadb import DATADB_ROOT,DATADB_TMP
|
||||
|
||||
|
||||
def get_backup_dir(backup_name):
|
||||
"""
|
||||
Get the absolute local path to a backup or raise an exception if none exists
|
||||
:returns: str absolute path to backup seq /0/
|
||||
"""
|
||||
backup_path = pathjoin(DATADB_ROOT, backup_name, 'data', '0', 'data')
|
||||
|
||||
if not exists(backup_path):
|
||||
raise Exception("Backup does not exist")
|
||||
|
||||
return backup_path
|
||||
|
||||
|
||||
def handle_get_rsync(backup_name):
|
||||
"""
|
||||
Prints the absolute path an rsync backup should pull from
|
||||
"""
|
||||
backup_path = get_backup_dir(backup_name)
|
||||
|
||||
start_response()
|
||||
print(backup_path+'/')
|
||||
|
||||
|
||||
def handle_get_archive(backup_name):
|
||||
"""
|
||||
Returns .tar.gz data to the browser
|
||||
"""
|
||||
backup_path = pathjoin(get_backup_dir(backup_name), 'backup.tar.gz')
|
||||
|
||||
with open(backup_path, 'rb') as f:
|
||||
start_response(content_type="application/x-gzip", extra_headers=["Content-length: %s" % getsize(backup_path),
|
||||
"Content-Disposition: attachment; filename=\"backup.tar.gz\""])
|
||||
while True:
|
||||
data = f.read(8192)
|
||||
if not data:
|
||||
break
|
||||
stdout.buffer.write(data)
|
||||
exit(0)
|
||||
|
||||
|
||||
def handle_req():
|
||||
"""
|
||||
Parse http query parameters and act accordingly.
|
||||
"""
|
||||
params = parse_qs()
|
||||
|
||||
for param_name in ["proto", "name"]:
|
||||
if not param_name in params:
|
||||
raise Exception("Missing parameter: %s" % param_name)
|
||||
|
||||
if os.environ['REQUEST_METHOD'] == "GET" and params["proto"] == "rsync":
|
||||
# Should return absolute local path to latest backup dir
|
||||
handle_get_rsync(params["name"])
|
||||
|
||||
elif os.environ['REQUEST_METHOD'] == "GET" and params["proto"] == "archive":
|
||||
# Should respond by transferring tar.gz data
|
||||
handle_get_archive(params["name"])
|
||||
|
||||
else:
|
||||
raise Exception("Invalid request. Params: %s" % params)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
try:
|
||||
handle_req()
|
||||
except Exception as e:
|
||||
start_response(status_code=("500", "Internal server error"))
|
||||
|
||||
tb = traceback.format_exc()
|
||||
print(tb)
|
||||
|
||||
|
|
@ -0,0 +1,168 @@
|
|||
#!/usr/bin/env python3
|
||||
|
||||
import os,sys,cgi
|
||||
from os import mkdir,rename,unlink
|
||||
from os.path import exists
|
||||
from os.path import join as pathjoin
|
||||
from common.cgi import parse_qs,parse_auth,start_response,fulltrace
|
||||
from common.datadb import DATADB_ROOT,DATADB_TMP
|
||||
from shutil import rmtree
|
||||
from subprocess import Popen,PIPE
|
||||
from time import time
|
||||
import traceback
|
||||
|
||||
def rotate_backups(backup_dir, sync_prev=False, max_backups=5):
|
||||
"""
|
||||
In the backup dir, cascade backups. (/1/ becomes /2/, /0/ becomes /1/, etc)
|
||||
:param backup_dir: absolute path to dir containing the numbered dirs we will be rotating
|
||||
:param sync_prev: if true, the previous backup's content will be copied to the newly create backup dir (0)
|
||||
:param max_backups: Max number of dirs to keep
|
||||
:returns: Full path of new data dir
|
||||
"""
|
||||
|
||||
# Path to this profile's backup data dir
|
||||
#profile_base_path = pathjoin(DATADB_ROOT, backupName, 'data')
|
||||
|
||||
dirs = os.listdir(backup_dir)
|
||||
|
||||
if len(dirs) > 0:
|
||||
# If there are some dirs, rotate them
|
||||
# Assume all items are dirs and all dirs are named numerically
|
||||
dirs = sorted([int(d) for d in dirs])
|
||||
dirs.reverse() # we now have [5, 4, 3, 2, 1, 0]
|
||||
|
||||
for item in dirs:
|
||||
if (item+1) >= max_backups:
|
||||
rmtree(pathjoin(backup_dir, str(item)))
|
||||
continue
|
||||
|
||||
# Rotate each backup once
|
||||
rename(
|
||||
pathjoin(backup_dir, str(item)),
|
||||
pathjoin(backup_dir, str(item+1))
|
||||
)
|
||||
|
||||
# Create the new backup dir
|
||||
new_backup_path = pathjoin(backup_dir, "0")
|
||||
mkdir(new_backup_path)
|
||||
mkdir(pathjoin(new_backup_path, "data"))
|
||||
|
||||
prev_backup_path = pathjoin(backup_dir, "1")
|
||||
|
||||
if sync_prev and exists(prev_backup_path):
|
||||
# if we're using rsync let's cp -r the previous backup to the empty new dir.
|
||||
# this should save some network time rsyncing later
|
||||
#copytree(prev_backup_path, new_backup_path)
|
||||
cp = Popen(['rsync', '-avr', '--one-file-system', prev_backup_path+'/data/', new_backup_path+'/data/'],
|
||||
stdout=PIPE, stderr=PIPE)
|
||||
cp.communicate()
|
||||
|
||||
return new_backup_path+'/data/'
|
||||
|
||||
|
||||
def prepare_backup_dirs(backupName, sync_prev=False, max_backups=5):
|
||||
"""
|
||||
Check and create dirs where backups under this name will go
|
||||
:param backupName: name of backup profile
|
||||
:param sync_prev: if true, the previous backup's content will be copied to the newly create backup dir (0)
|
||||
:returns: absolute path to newly created backup dir (0)
|
||||
"""
|
||||
#print("prepare_backup(%s, %s)" % (backupName, proto))
|
||||
|
||||
# Ensure the following dir exists: <DATADB_ROOT>/<backup_name>/data/0/
|
||||
backup_base_path = pathjoin(DATADB_ROOT, backupName)
|
||||
if not exists(backup_base_path):
|
||||
mkdir(backup_base_path)
|
||||
|
||||
backup_data_path = pathjoin(backup_base_path, 'data')
|
||||
if not exists(backup_data_path):
|
||||
mkdir(backup_data_path)
|
||||
|
||||
# Should always return bkname/data/0/data/
|
||||
new_path = rotate_backups(backup_data_path, sync_prev=sync_prev, max_backups=max_backups)
|
||||
|
||||
return new_path
|
||||
|
||||
|
||||
def handle_get_rsync(backupName, max_backups):
|
||||
"""
|
||||
Prepare for an rsync backup transfer. Prints path to screen after preparing it.
|
||||
:param backupName: name of backup profile
|
||||
"""
|
||||
# Prepare new dir
|
||||
new_target_dir = prepare_backup_dirs(backupName, sync_prev=True, max_backups=max_backups)
|
||||
|
||||
# Print absolute path to screen. datadb client will use this path as the rsync dest
|
||||
start_response()
|
||||
print(new_target_dir)
|
||||
|
||||
exit(0)
|
||||
|
||||
|
||||
def handle_put_archive(backupName, fileStream, max_backups):
|
||||
"""
|
||||
Prepare and accept a new archive backup - a single tar.gz archive.
|
||||
:param backupName: profile the new file will be added to
|
||||
:param fileStream: file-like object to read archive data from, to disk
|
||||
"""
|
||||
|
||||
# Temp file we will store data in as it is uploaded
|
||||
tmp_fname = pathjoin(DATADB_TMP, "%s.tar.gz" % time())
|
||||
|
||||
# Track uploaded data size
|
||||
bk_size = 0
|
||||
with open(tmp_fname, 'wb') as f:
|
||||
while True:
|
||||
data = fileStream.read(8192)
|
||||
if not data:
|
||||
break
|
||||
bk_size += len(data)
|
||||
f.write(data)
|
||||
|
||||
# No data = assume something failed
|
||||
if bk_size == 0:
|
||||
unlink(tmp_fname)
|
||||
raise Exception("No file uploaded...")
|
||||
|
||||
new_target_dir = prepare_backup_dirs(backupName, max_backups=max_backups)
|
||||
|
||||
# Move backup into place
|
||||
rename(tmp_fname, pathjoin(new_target_dir, 'backup.tar.gz'))
|
||||
|
||||
# Done
|
||||
start_response() # send 200 response code
|
||||
exit(0)
|
||||
|
||||
|
||||
def handle_req():
|
||||
"""
|
||||
Parse http query parameters and act accordingly.
|
||||
"""
|
||||
params = parse_qs()
|
||||
|
||||
for param_name in ["proto", "name"]:
|
||||
if not param_name in params:
|
||||
raise Exception("Missing parameter: %s" % param_name)
|
||||
|
||||
max_backups = int(params["keep"]) if "keep" in params else 5
|
||||
assert max_backups > 0, "Must keep at least one backup"
|
||||
|
||||
if os.environ['REQUEST_METHOD'] == "GET" and params["proto"] == "rsync":
|
||||
# Rsync is always GET
|
||||
handle_get_rsync(params["name"], max_backups)
|
||||
|
||||
elif os.environ['REQUEST_METHOD'] == "PUT" and params["proto"] == "archive":
|
||||
# Archive mode PUTs a file
|
||||
handle_put_archive(params["name"], sys.stdin.buffer, max_backups)
|
||||
|
||||
else:
|
||||
raise Exception("Invalid request. Params: %s" % params)
|
||||
|
||||
if __name__ == "__main__":
|
||||
try:
|
||||
handle_req()
|
||||
except Exception as e:
|
||||
start_response(status_code=("500", "Internal server error"))
|
||||
|
||||
tb = traceback.format_exc()
|
||||
print(tb)
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
#!/usr/bin/env python3
|
||||
|
||||
import os
|
||||
from urllib.parse import parse_qs
|
||||
|
||||
def start_response(content_type="text/html", status_code=("200", "OK",)):
|
||||
print('Status: %s %s' % (status_code))
|
||||
print("Content-Type: %s" % content_type)
|
||||
print()
|
||||
|
||||
if __name__ == "__main__":
|
||||
try:
|
||||
|
||||
data = parse_qs(os.environ["QUERY_STRING"])
|
||||
|
||||
assert "yo" in data
|
||||
|
||||
start_response()
|
||||
print("you passed: ?yo=%s" % data["yo"][0])
|
||||
|
||||
except Exception as e:
|
||||
start_response(status_code=('500', "you fucked up"))
|
||||
print(str(e))
|
||||
Loading…
Reference in New Issue