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#!/usr/bin/python
import os
import sys
import getopt
import subprocess
import socket
import tempfile
import yaml
config_path = os.path.expanduser("~")+"/.config/data-sync.yaml"
text_red = '\033[31m'
text_blue = '\033[34m'
text_green = '\033[32m'
text_cyan = '\033[36m'
text_bold = '\033[1m'
text_reset = '\033[0m'
class data_sync():
hosts = []
diff = False
merge = False
# config
def config_load(self):
s = open(config_path, "r")
y = yaml.load(s, Loader = yaml.SafeLoader)
s.close()
self.hostname = socket.gethostname()
self.hosts = y["hosts"]
# hosts
def host_find(self, name):
for host in self.hosts:
if host["name"] == name:
return host
return None
def host_target_check(self, host, target):
if "targets" not in host:
return False
for entry in host["targets"]:
if entry["label"] == target:
return True
return False
# excludes
def excludes_prepare(self, entry):
if "excludes" not in entry:
return None
fd, path = tempfile.mkstemp()
s = os.fdopen(fd, 'w')
for exclude in entry["excludes"]:
s.write(entry["path"]+exclude+"\n")
return path
def excludes_cleanup(self, excludes_path):
os.unlink(excludes_path)
# rsync
def rsync_address(self, host, path):
if host["name"] == self.hostname or ("location" in host and host["location"] == "local"):
return path
else:
address = ""
if "user" in host:
address += host["user"]+"@"
if "address" in host:
address += host["address"]
else:
address += host["name"]
address += ":" + path
return address
def rsync_command(self, source, source_path, sink, sink_path, excludes_path):
rsync_command = [ "rsync", "-a", "-s", "--progress" ]
if not self.merge:
rsync_command += [ "--delete" ]
if self.diff:
rsync_command += [ "--dry-run" ]
if excludes_path:
rsync_command += [ "--exclude-from="+excludes_path ]
rsync_command += [ self.rsync_address(source, source_path) ]
rsync_command += [ self.rsync_address(sink, sink_path) ]
return rsync_command
# sync
def sync_target(self, source, sink, target):
print("Sync target "+target+" between "+source["name"]+" and "+sink["name"])
def sync_targets(self, source, sink, targets):
targets_list = []
for target in targets:
if self.host_target_check(source, target) and self.host_target_check(sink, target):
targets_list.append(target)
if len(targets_list) == 0:
return 1
for target in targets_list:
self.sync_target(source, sink, target)
return 0
def sync_data_entry(self, source, sink, sync_host, entry):
print("\nSync "+text_green+text_bold+entry["path"]+text_reset+" from "+text_cyan+source["name"]+text_reset+" to "+text_cyan+sink["name"]+text_reset+" started")
source_path = os.path.join(source["base"], entry["path"])
sink_path = os.path.join(sink["base"], sync_host["path"]) + "/"
excludes_path = self.excludes_prepare(entry)
command = self.rsync_command(source, source_path, sink, sink_path, excludes_path)
subprocess.call(command)
if excludes_path:
self.excludes_cleanup(excludes_path)
print("\nSync "+text_green+text_bold+entry["path"]+text_reset+" from "+text_cyan+source["name"]+text_reset+" to "+text_cyan+sink["name"]+text_reset+" finished")
def sync_data(self, source, sink, targets):
found = False
print("Sync data from "+text_cyan+text_bold+source["name"]+text_reset+" to "+text_cyan+text_bold+sink["name"]+text_reset)
sync_host = None
if "sync-hosts" not in sink:
return 1
for entry in sink["sync-hosts"]:
if entry["name"] == source["name"]:
sync_host = entry
if sync_host is None:
print(sink["name"]+" is not a sync host for "+source["name"])
if "data" not in source:
return 1
for entry in source["data"]:
if len(targets) > 0 and entry["path"] not in targets:
continue
self.sync_data_entry(source, sink, sync_host, entry)
found = True
if not found:
return 1
return 0
def main(self):
global config_path
opts, args = getopt.getopt(sys.argv[1:], "mdc:")
for key, value in opts:
if key == "-m":
self.merge = True
elif key == "-d":
self.diff = True
elif key == "-c":
config_path = value
if len(args) < 2:
return 1
source_name = args[0]
sink_name = args[1]
targets = args[2:]
self.config_load()
source = self.host_find(source_name)
if source is None:
print("Unknown source host: "+source_name)
return 1
sink = self.host_find(sink_name)
if sink is None:
print("Unknown sink host: "+sink_name)
return 1
if len(targets) == 0:
return self.sync_data(source, sink, targets)
ret = self.sync_targets(source, sink, targets)
if ret != 0:
ret = self.sync_data(source, sink, targets)
if ret != 0:
print("No common target or data to sync")
return ret
if __name__ == "__main__":
sys.exit(data_sync().main())
|
