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add docker hub proxy #7

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41 changes: 17 additions & 24 deletions docker_wrapper.py
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Original file line number Diff line number Diff line change
Expand Up @@ -8,21 +8,20 @@
# gcr.io/xxx/yyy:zzz -> gcr.azk8s.cn/xxx/yyy:zzz, for example gcr.io/google_containers/kube-apiserver:v1.14.1
# k8s.gcr.io/xxx:yyy => gcr.io/google-containers/xxx:yyy -> gcr.azk8s.cn/google-containers/xxx:yyy, for example k8s.gcr.io/kube-apiserver:v1.14.1
# quay.io/xxx/yyy:zzz -> quay.azk8s.cn/xxx/yyy:zzz, for example quay.io/coreos/flannel:v0.10.0-amd64
# xxx:yyy -> dockerhub.azk8s.cn/library/xxx:yyy

converts = [
{
'prefix': 'gcr.io',
'replace': lambda x: x.replace('gcr.io', 'gcr.azk8s.cn'),
},
{
'prefix': 'k8s.gcr.io',
'replace': lambda x: x.replace('k8s.gcr.io', 'gcr.azk8s.cn/google-containers'),
},
{
'prefix': 'quay.io',
'replace': lambda x: x.replace('quay.io', 'quay.azk8s.cn'),
}
]
converts = {
'gcr.io': 'gcr.azk8s.cn',
'k8s.gcr.io': 'gcr.azk8s.cn/google-containers',
'quay.io': 'quay.azk8s.cn',
}

def proxy_image(image):
repo = image.split("/")[0]
if repo in converts:
return image.replace(repo, converts[repo])
# docker hub
return 'dockerhub.azk8s.cn/library/' + image

def execute_sys_cmd(cmd):
result = os.system(cmd)
Expand All @@ -39,24 +38,18 @@ def usage():
sys.exit(-1)

image = sys.argv[2]
imageArray = image.split("/")

newImage = ''
for cvt in converts:
if imageArray[0] == cvt['prefix']:
newImage = cvt['replace'](image)
break
newImage = proxy_image(image)
if newImage:
print("-- pull {image} from {newimage} instead --".format(image=image, newimage=newImage))
cmd = "docker pull {image}".format(image=newImage)
execute_sys_cmd(cmd)

cmd = "docker tag {newImage} {image}".format(newImage=newImage, image=image)
execute_sys_cmd(cmd)

cmd = "docker rmi {newImage}".format(newImage=newImage)
execute_sys_cmd(cmd)

print("-- pull {image} done --".format(image=image))
sys.exit(0)
else:
Expand Down