Rewritten s3 module to allow for additional modes of operation.
This commit is contained in:
lwade
parent
36aa5943d1
commit
99ac050a43
1 changed files with 282 additions and 138 deletions
420
cloud/s3
420
cloud/s3
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@ -24,101 +24,222 @@ version_added: "1.1"
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options:
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bucket:
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description:
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- bucket you wish to present/absent for the key (file in path).
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- Bucket name.
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required: true
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default: null
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aliases: []
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state:
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object:
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description:
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- desired state for both bucket and file.
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default: null
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aliases: []
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path:
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description:
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- path to the key (file) which you wish to be present/absent in the bucket.
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- Keyname of the object inside the bucket. Can be used to create "virtual directories", see examples.
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required: false
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default: null
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aliases: []
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version_added: "1.3"
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src:
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description:
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- The source file path when performing a PUT operation.
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required: false
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default: null
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aliases: []
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version_added: "1.3"
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dest:
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description:
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- the destination in S3, if different from path
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- The destination file path when downloading an object/key with a GET operation.
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required: false
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default: 600
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aliases: []
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version_added: "1.3"
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overwrite:
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description:
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- Force overwrite either locally on the filesystem or remotely with the object/key. Used with PUT and GET operations.
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required: false
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default: false
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version_added: "1.2"
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mode:
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description:
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- Switches the module behaviour between put (upload), get (download), create (bucket) and delete (bucket).
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required: true
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default: null
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aliases: []
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expiry:
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description:
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- expiry period (in seconds) for returned download URL.
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- Time limit (in seconds) for the URL generated and returned by S3/Walrus when performing a mode=put or mode=geturl operation.
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required: false
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default: 600
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default: null
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aliases: []
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overwrite:
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description:
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- force overwrite if a file with the same name already exists. Does not support files uploaded to S3 with multipart upload.
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required: false
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default: false
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version_added: "1.2"
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requirements: [ "boto" ]
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author: Lester Wade, Ralph Tice
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'''
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EXAMPLES = '''
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# Simple PUT operation
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- s3: bucket: mybucket
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path: /path/to/file
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state: present
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# Force and overwrite if checksums don't match
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- s3: bucket: mybucket
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path: /path/to/file
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state: present
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overwrite: yes
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- s3: bucket=mybucket object=/my/desired/key.txt src=/usr/local/myfile.txt mode=put
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# Simple GET operation
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- s3: bucket=mybucket object=/my/desired/key.txt dest=/usr/local/myfile.txt mode=get
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# GET/download and overwrite local file (trust remote)
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- s3: bucket=mybucket object=/my/desired/key.txt dest=/usr/local/myfile.txt mode=get overwrite=true
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# PUT/upload and overwrite remote file (trust local)
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- s3: bucket=mybucket object=/my/desired/key.txt src=/usr/local/myfile.txt mode=put overwrite=true
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# Create an empty bucket
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- s3: bucket=mybucket mode=create
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# Delete a bucket and all contents
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- s3: bucket=mybucket mode=delete
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'''
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import sys
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import os
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import urlparse
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import hashlib
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try:
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import boto
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import hashlib
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except ImportError:
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print "failed=True msg='boto required for this module'"
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sys.exit(1)
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def upload_s3file(module, s3, bucket, key_name, path, expiry):
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def key_check(module, s3, bucket, obj):
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try:
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key = bucket.new_key(key_name)
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key.set_contents_from_filename(path)
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bucket = s3.lookup(bucket)
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key_check = bucket.get_key(obj)
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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if key_check:
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return True
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else:
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return False
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def keysum(module, s3, bucket, obj):
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bucket = s3.lookup(bucket)
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key_check = bucket.get_key(obj)
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if key_check:
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md5_remote = key_check.etag[1:-1]
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etag_multipart = md5_remote.find('-')!=-1 #Check for multipart, etag is not md5
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if etag_multipart is True:
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module.fail_json(msg="Files uploaded with multipart of s3 are not supported with checksum, unable to compute checksum.")
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sys.exit(0)
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return md5_remote
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def bucket_check(module, s3, bucket):
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try:
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result = s3.lookup(bucket)
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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if result:
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return True
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else:
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return False
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def create_bucket(module, s3, bucket):
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try:
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bucket = s3.create_bucket(bucket)
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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if bucket:
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return True
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def delete_bucket(module, s3, bucket):
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try:
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bucket = s3.lookup(bucket)
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bucket_contents = bucket.list()
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bucket.delete_keys([key.name for key in bucket_contents])
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bucket.delete()
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return True
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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def delete_key(module, s3, bucket, obj):
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try:
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bucket = s3.lookup(bucket)
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bucket.delete_key(obj)
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module.exit_json(msg="Object deleted from bucket %s"%bucket, changed=True)
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sys.exit(0)
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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def create_key(module, s3, bucket, obj):
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try:
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bucket = s3.lookup(bucket)
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bucket.new_key(obj)
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module.exit_json(msg="Object %s created in bucket %s" % (obj, bucket), changed=True)
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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def upload_file_check(src):
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if os.path.exists(src):
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file_exists is True
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else:
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file_exists is False
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if os.path.isdir(src):
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module.fail_json(msg="Specifying a directory is not a valid source for upload.", failed=True)
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sys.exit(0)
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return file_exists
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def path_check(path):
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if os.path.exists(path):
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return True
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else:
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return False
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def upload_s3file(module, s3, bucket, obj, src, expiry):
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try:
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bucket = s3.lookup(bucket)
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key = bucket.new_key(obj)
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key.set_contents_from_filename(src)
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url = key.generate_url(expiry)
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module.exit_json(msg="Put operation complete", url=url, changed=True)
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module.exit_json(msg="PUT operation complete", url=url, changed=True)
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sys.exit(0)
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except s3.provider.storage_copy_error, e:
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module.fail_json(msg= str(e))
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def download_s3file(module, s3, bucket, obj, dest):
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try:
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bucket = s3.lookup(bucket)
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key = bucket.lookup(obj)
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key.get_contents_to_filename(dest)
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module.exit_json(msg="GET operation complete", changed=True)
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sys.exit(0)
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except s3.provider.storage_copy_error, e:
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module.fail_json(msg= str(e))
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def get_download_url(module, s3, bucket, obj, expiry):
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try:
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bucket = s3.lookup(bucket)
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key = bucket.lookup(obj)
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url = key.generate_url(expiry)
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module.exit_json(msg="Download url:", url=url, expiry=expiry, changed=True)
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sys.exit(0)
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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def main():
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module = AnsibleModule(
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argument_spec = dict(
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bucket = dict(),
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path = dict(),
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bucket = dict(required=True),
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object = dict(),
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src = dict(),
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dest = dict(),
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state = dict(choices=['present', 'absent']),
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mode = dict(choices=['get', 'put', 'delete', 'create', 'geturl'], required=True),
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expiry = dict(default=600, aliases=['expiration']),
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s3_url = dict(aliases=['S3_URL']),
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ec2_secret_key = dict(aliases=['EC2_SECRET_KEY']),
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ec2_access_key = dict(aliases=['EC2_ACCESS_KEY']),
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overwrite = dict(default=False, type='bool'),
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),
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required_together=[ ['bucket', 'path', 'state'] ],
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)
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bucket_name = module.params.get('bucket')
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path = os.path.expanduser(module.params['path'])
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bucket = module.params.get('bucket')
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obj = module.params.get('object')
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src = module.params.get('src')
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dest = module.params.get('dest')
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state = module.params.get('state')
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mode = module.params.get('mode')
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expiry = int(module.params['expiry'])
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s3_url = module.params.get('s3_url')
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ec2_secret_key = module.params.get('ec2_secret_key')
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ec2_access_key = module.params.get('ec2_access_key')
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overwrite = module.params.get('overwrite')
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if module.params.get('object'):
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obj = os.path.expanduser(module.params['object'])
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# allow eucarc environment variables to be used if ansible vars aren't set
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if not s3_url and 'S3_URL' in os.environ:
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@ -140,118 +261,141 @@ def main():
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s3 = boto.connect_s3(ec2_access_key, ec2_secret_key)
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except boto.exception.NoAuthHandlerFound, e:
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module.fail_json(msg = str(e))
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# README - Future features this module should have:
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# enhanced path (contents of a directory)
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# md5sum check of file vs. key in bucket
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# a user-friendly way to fetch the key (maybe a "fetch" parameter option)
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# persistent download URL if desired
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# If our mode is a GET operation (download), go through the procedure as appropriate ...
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if mode == 'get':
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# Lets get some information from the s3 connection, including bucket check ...
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bucket = s3.lookup(bucket_name)
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if bucket:
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bucket_exists = True
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else:
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bucket_exists = False
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# Lets list the contents
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if bucket_exists is True:
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bucket_contents = bucket.list()
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# Check filename is valid, if not downloading
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if path:
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if not os.path.exists(path):
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failed = True
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module.fail_json(msg="Source %s cannot be found" % (path), failed=failed)
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# First, we check to see if the bucket exists, we get "bucket" returned.
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bucketrtn = bucket_check(module, s3, bucket)
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if bucketrtn is False:
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module.fail_json(msg="Target bucket cannot be found", failed=True)
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sys.exit(0)
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# Default to setting the key to the same as the filename if dest is not provided.
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if dest is None:
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key_name = os.path.basename(path)
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else:
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key_name = dest
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# Next, we check to see if the key in the bucket exists. If it exists, it also returns key_matches md5sum check.
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keyrtn = key_check(module, s3, bucket, obj)
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if keyrtn is False:
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module.fail_json(msg="Target key cannot be found", failed=True)
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sys.exit(0)
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# Check to see if the key already exists
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key_exists = False
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if bucket_exists is True:
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try:
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key_check = bucket.get_key(key_name)
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if key_check:
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key_exists = True
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# If the destination path doesn't exist, no need to md5um etag check, so just download.
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pathrtn = path_check(dest)
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if pathrtn is False:
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download_s3file(module, s3, bucket, obj, dest)
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# Compare the remote MD5 sum of the object with the local dest md5sum, if it already exists.
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if pathrtn is True:
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md5_remote = keysum(module, s3, bucket, obj)
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md5_local = hashlib.md5(open(dest, 'rb').read()).hexdigest()
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if md5_local == md5_remote:
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sum_matches = True
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if overwrite is True:
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download_s3file(module, s3, bucket, obj, dest)
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else:
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module.exit_json(msg="Local and remote object are identical, ignoring. Use overwrite parameter to force.", changed=False)
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else:
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key_exists = False
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except s3.provider.storage_response_error, e:
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module.fail_json(msg= str(e))
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if key_exists is True and overwrite:
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# Retrieve MD5 Checksums.
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md5_remote = key_check.etag[1:-1] # Strip Quotation marks from etag: https://code.google.com/p/boto/issues/detail?id=391
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etag_multipart = md5_remote.find('-')!=-1 # Find out if this is a multipart upload -> etag is not md5: https://forums.aws.amazon.com/message.jspa?messageID=222158
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if etag_multipart is True:
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module.fail_json(msg="Files uploaded with multipart to s3 are not supported with checksum. They do not contain a valid md5 checksum, use overwrite=no instead.")
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sys.exit(0)
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md5_local = hashlib.md5(open(path, 'rb').read()).hexdigest()
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md5_equal = md5_local == md5_remote
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sum_matches = False
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if overwrite is True:
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download_s3file(module, s3, bucket, obj, dest)
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else:
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module.fail_json(msg="WARNING: Checksums do not match. Use overwrite parameter to force download.", failed=True)
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if state == 'present':
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if bucket_exists is True and key_exists is True:
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if overwrite is False:
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exists = True
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changed = False
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module.exit_json(msg="Bucket and key already exist", changed=changed)
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if overwrite is True:
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if md5_equal is True:
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module.exit_json(msg="Remote and local file checksums identical.", changed=False)
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if md5_equal is False:
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upload_s3file(module, s3, bucket, key_name, path, expiry)
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# If destination file doesn't already exist we can go ahead and download.
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if pathrtn is False:
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download_s3file(module, s3, bucket, obj, dest)
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# Firstly, if key_matches is TRUE and overwrite is not enabled, we EXIT with a helpful message.
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if sum_matches is True and overwrite is False:
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module.exit_json(msg="Local and remote object are identical, ignoring. Use overwrite parameter to force.", changed=False)
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# At this point explicitly define the overwrite condition.
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if sum_matches is True and pathrtn is True and overwrite is True:
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download_s3file(module, s3, bucket, obj, dest)
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# If sum does not match but the destination exists, we
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# if our mode is a PUT operation (upload), go through the procedure as appropriate ...
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if mode == 'put':
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# Use this snippet to debug through conditionals:
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# module.exit_json(msg="Bucket return %s"%bucketrtn)
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# sys.exit(0)
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# Lets check the src path.
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pathrtn = path_check(src)
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if pathrtn is False:
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module.fail_json(msg="Local object for PUT does not exist", failed=True)
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sys.exit(0)
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# Lets check to see if bucket exists to get ground truth.
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bucketrtn = bucket_check(module, s3, bucket)
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keyrtn = key_check(module, s3, bucket, obj)
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# Lets check key state. Does it exist and if it does, compute the etag md5sum.
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if bucketrtn is True and keyrtn is True:
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md5_remote = keysum(module, s3, bucket, obj)
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md5_local = hashlib.md5(open(src, 'rb').read()).hexdigest()
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if md5_local == md5_remote:
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sum_matches = True
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if overwrite is True:
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upload_s3file(module, s3, bucket, obj, src, expiry)
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else:
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module.exit_json(msg="Local and remote object are identical, ignoring. Use overwrite parameter to force.", changed=False)
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else:
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sum_matches = False
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if overwrite is True:
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upload_s3file(module, s3, bucket, obj, src, expiry)
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else:
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module.exit_json(msg="WARNING: Checksums do not match. Use overwrite parameter to force upload.", failed=True)
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# If neither exist (based on bucket existence), we can create both.
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if bucketrtn is False and pathrtn is True:
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create_bucket(module, s3, bucket)
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upload_s3file(module, s3, bucket, obj, src, expiry)
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# If bucket exists, there cannot be a key within, lets create it ...
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if state == 'present':
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if bucket_exists is False:
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try:
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bucket = s3.create_bucket(bucket_name)
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bucket_exists = True
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key_exists = False
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changed = True
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except s3.provider.storage_create_error, e:
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module.fail_json(msg = str(e))
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# If bucket exists but key doesn't, just upload.
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if bucketrtn is True and pathrtn is True and keyrtn is False:
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upload_s3file(module, s3, bucket, obj, src, expiry)
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# If bucket now exists but key doesn't or overwrite is True, create the key
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if state == 'present':
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if bucket_exists is True and key_exists is False:
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upload_s3file(module, s3, bucket, key_name, path, expiry)
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# If state is absent and the bucket exists (doesn't matter about key since the bucket is the container), delete it.
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if state == 'absent':
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if bucket_exists is True:
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try:
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for contents in bucket.list():
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bucket.delete_key(contents)
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s3.delete_bucket(bucket)
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changed = True
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module.exit_json(msg="Bucket and key removed.", changed=changed)
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sys.exit(0)
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except s3.provider.storage_response_error, e:
|
||||
module.fail_json(msg= str(e))
|
||||
# Support for deleting an object if we have both params.
|
||||
if mode == 'delete':
|
||||
if bucket:
|
||||
bucketrtn = bucket_check(module, s3, bucket)
|
||||
if bucketrtn is True:
|
||||
deletertn = delete_bucket(module, s3, bucket)
|
||||
if deletertn is True:
|
||||
module.exit_json(msg="Bucket %s and all keys have been deleted."%bucket, changed=True)
|
||||
else:
|
||||
module.fail_json(msg="Bucket does not exist.", failed=True)
|
||||
else:
|
||||
changed = False
|
||||
module.exit_json(msg="Bucket and key do not exist", changed=changed)
|
||||
|
||||
# TO DO - ADD BUCKET DOWNLOAD OPTION
|
||||
# # If download is specified, fetch it
|
||||
# if download:
|
||||
# if bucket_exists is True and key_exists is True:
|
||||
# try:
|
||||
# getkey = bucket.lookup(key_name)
|
||||
# getkey.get_contents_to_filename(path)
|
||||
# url = getkey.generate_url(expiry)
|
||||
# module.exit_json(msg="GET operation complete", url=url, changed=True)
|
||||
# sys.exit(0)
|
||||
# except s3.provider.storage_copy_error, e:
|
||||
# module.fail_json(msg= str(e))
|
||||
module.fail_json(msg="Bucket parameter is required.", failed=True)
|
||||
|
||||
# Need to research how to create directories without "populating" a key, so this should just do bucket creation for now.
|
||||
# WE SHOULD ENABLE SOME WAY OF CREATING AN EMPTY KEY TO CREATE "DIRECTORY" STRUCTURE, AWS CONSOLE DOES THIS.
|
||||
if mode == 'create':
|
||||
if bucket:
|
||||
bucketrtn = bucket_check(module, s3, bucket)
|
||||
if bucketrtn is True:
|
||||
module.exit_json(msg="Bucket already exists.", changed=False)
|
||||
else:
|
||||
created = create_bucket(module, s3, bucket)
|
||||
if bucket and obj:
|
||||
module.fail_json(msg="mode=create can only be used for bucket creation.", failed=True)
|
||||
|
||||
# Support for grabbing the time-expired URL for an object in S3/Walrus.
|
||||
if mode == 'geturl':
|
||||
if bucket and obj:
|
||||
bucketrtn = bucket_check(module, s3, bucket)
|
||||
if bucketrtn is False:
|
||||
module.fail_json(msg="Bucket %s does not exist."%bucket, failed=True)
|
||||
else:
|
||||
keyrtn = key_check(module, s3, bucket, obj)
|
||||
if keyrtn is True:
|
||||
get_download_url(module, s3, bucket, obj, expiry)
|
||||
else:
|
||||
module.fail_json(msg="Key %s does not exist."%obj, failed=True)
|
||||
else:
|
||||
module.fail_json(msg="Bucket and Object parameters must be set", failed=True)
|
||||
sys.exit(0)
|
||||
|
||||
sys.exit(0)
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue