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only push objects that do not already exist in the bucket #2

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only push objects that do not already exist in the bucket #2

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47 changes: 39 additions & 8 deletions git-fat
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ import subprocess
import shlex
import shutil
import itertools
import json
import threading
import time
import collections
Expand Down Expand Up @@ -176,25 +177,54 @@ class GitFat(object):
raise RuntimeError('No rsync.remote in %s' % cfgpath)
return remote, ssh_port, ssh_user, options

def list_objects(self, s3_bucket):
bucket = s3_bucket[5:]
cmd = [
"aws",
"s3api",
"list-objects",
"--bucket",
bucket
]

process = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = process.communicate()

if out:
# try to parse list from json
data = json.loads(out)
keys = [key.get('Key') for key in data.get('Contents')]
return keys
else:
print("Failed to list bucket with error: %s" % err)
sys.exit(1)

return []

def get_aws_cmd(self, push, s3_bucket, files):
if not which('aws'):
sys.stderr.write('Could not find aws cli install.\n')
sys.exit(1)

if not s3_bucket.startswith('s3://'):
s3_bucket = "s3://{}".format(s3_bucket)

cmds = []
if push:
self.verbose('Pushing to %s' % (s3_bucket))
remote_files = self.list_objects(s3_bucket)
for file in files:
cmd = [
"aws",
"s3",
"cp",
self.objdir + "/" + file,
s3_bucket + "/" + file
]
cmds.append(cmd)
# only push files that do not exist in the remote
if file not in remote_files:
self.verbose("%s does not exist in remote, will be pushed" % file)
cmd = [
"aws",
"s3",
"cp",
self.objdir + "/" + file,
s3_bucket + "/" + file
]
cmds.append(cmd)
else:
self.verbose('Pulling from %s' % (s3_bucket))
for file in files:
Expand All @@ -206,6 +236,7 @@ class GitFat(object):
self.objdir + "/" + file
]
cmds.append(cmd)

return cmds

def get_rsync_command(self,push,files):
Expand Down