aws.sdk.s3 — org.clojars.kbosompem/clj-aws-s3 0.4.190616

Functions to access the Amazon S3 storage service.

Each function takes a map of credentials as its first argument. The credentials map should contain an :access-key key and a :secret-key key, optionally an :endpoint key to denote an AWS endpoint and optionally a :proxy key to define a HTTP proxy to go through.

The :proxy key must contain keys for :host and :port, and may contain keys for :user, :password, :domain and :workstation.

bucket-exists? clj

(bucket-exists? cred name)

Returns true if the supplied bucket name already exists in S3.

copy-object clj

(copy-object cred bucket src-key dest-key)

(copy-object cred src-bucket src-key dest-bucket dest-key)

Copy an existing S3 object to another key. Returns a map containing the data returned from S3

create-bucket clj

(create-bucket cred name)

Create a new S3 bucket with the supplied name.

delete-bucket clj

(delete-bucket cred name)

Delete the S3 bucket with the supplied name.

delete-object clj

(delete-object cred bucket key)

Delete an object from an S3 bucket.

delete-version clj

(delete-version cred bucket key version-id)

Deletes a specific version of the specified object in the specified bucket.

generate-presigned-url clj

(generate-presigned-url cred bucket key & [options])

Return a presigned URL for an S3 object. Accepts the following options: :expires - the date at which the URL will expire (defaults to 1 day from now) :http-method - the HTTP method for the URL (defaults to :get)

get-bucket-acl clj

(get-bucket-acl cred bucket)

Get the access control list (ACL) for the supplied bucket. The ACL is a map containing two keys: :owner - the owner of the ACL :grants - a set of access permissions granted

The grants themselves are maps with keys: :grantee - the individual or group being granted access :permission - the type of permission (:read, :write, :read-acp, :write-acp or :full-control).

get-object clj

(get-object cred bucket key)

(get-object cred bucket key version-id)

Get an object from an S3 bucket. The object is returned as a map with the following keys: :content - an InputStream to the content :metadata - a map of the object's metadata :bucket - the name of the bucket :key - the object's key Be extremely careful when using this method; the :content value in the returned map contains a direct stream of data from the HTTP connection. The underlying HTTP connection cannot be closed until the user finishes reading the data and closes the stream. Therefore:

• Use the data from the :content input stream as soon as possible
• Close the :content input stream as soon as possible If these rules are not followed, the client can run out of resources by allocating too many open, but unused, HTTP connections.

get-object-acl clj

(get-object-acl cred bucket key)

Get the access control list (ACL) for the supplied object. See get-bucket-acl for a detailed description of the return value.

get-object-metadata clj

(get-object-metadata cred bucket key & [options])

Get an object's metadata from a bucket. A optional map of options may be supplied. Available options are: :version-id - the version of the object The metadata is a map with the following keys: :cache-control - the CacheControl HTTP header :content-disposition - the ContentDisposition HTTP header :content-encoding - the character encoding of the content :content-length - the length of the content in bytes :content-md5 - the MD5 hash of the content :content-type - the mime-type of the content :etag - the HTTP ETag header :last-modified - the last modified date :server-side-encryption - the server-side encryption algorithm

grant clj

(grant grantee permission)

Returns a function that adds a new grant map to a set of grants. See update-bucket-acl.

list-buckets clj

(list-buckets cred)

List all the S3 buckets for the supplied credentials. The buckets will be returned as a seq of maps with the following keys: :name - the bucket name :creation-date - the date when the bucket was created :owner - the owner of the bucket

list-objects clj

(list-objects cred bucket & [options])

List the objects in an S3 bucket. A optional map of options may be supplied. Available options are: :delimiter - read only keys up to the next delimiter (such as a '/') :marker - read objects after this key :max-keys - read only this many objects :prefix - read only objects with this prefix

The object listing will be returned as a map containing the following keys: :bucket - the name of the bucket :prefix - the supplied prefix (or nil if none supplied) :objects - a list of objects :common-prefixes - the common prefixes of keys omitted by the delimiter :max-keys - the maximum number of objects to be returned :truncated? - true if the list of objects was truncated :marker - the marker of the listing :next-marker - the next marker of the listing

list-versions clj

(list-versions cred bucket & [options])

List the versions in an S3 bucket. A optional map of options may be supplied. Available options are: :delimiter - the delimiter used in prefix (such as a '/') :key-marker - read versions from the sorted list of all versions starting at this marker. :max-results - read only this many versions :prefix - read only versions with keys having this prefix :version-id-marker - read objects after this version id

The version listing will be returned as a map containing the following versions: :bucket - the name of the bucket :prefix - the supplied prefix (or nil if none supplied) :versions - a sorted list of versions, newest first, each version has: :version-id - the unique version id :latest? - is this the latest version for that key? :delete-marker? - is this a delete-marker? :common-prefixes - the common prefixes of keys omitted by the delimiter :max-results - the maximum number of results to be returned :truncated? - true if the results were truncated :key-marker - the key marker of the listing :next-version-id-marker - the version ID marker to use in the next listVersions request in order to obtain the next page of results. :version-id-marker - the version id marker of the listing

object-exists? clj

(object-exists? cred bucket key)

Returns true if an object exists in the supplied bucket and key.

put-multipart-object clj

(put-multipart-object cred
                      bucket
                      key
                      file
                      &
                      [{:keys [part-size threads]
                        :or {part-size (* 5 1024 1024) threads 16}}])

Do a multipart upload of a file into a S3 bucket at the specified key. The value must be a java.io.File object. The entire file is uploaded or not at all. If an exception happens at any time the upload is aborted and the exception is rethrown. The size of the parts and the number of threads uploading the parts can be configured in the last argument as a map with the following keys: :part-size - the size in bytes of each part of the file. Must be 5mb or larger. Defaults to 5mb :threads - the number of threads that will upload parts concurrently. Defaults to 16.

put-object clj

(put-object cred bucket key value & [metadata & permissions])

Put a value into an S3 bucket at the specified key. The value can be a String, InputStream or File (or anything that implements the ToPutRequest protocol).

An optional map of metadata may also be supplied that can include any of the following keys: :cache-control - the cache-control header (see RFC 2616) :content-disposition - how the content should be downloaded by browsers :content-encoding - the encoding of the content (e.g. gzip) :content-length - the length of the content in bytes :content-md5 - the MD5 sum of the content :content-type - the mime type of the content :server-side-encryption - set to AES256 if SSE is required

An optional list of grant functions can be provided after metadata. These functions will be applied to a clear ACL and the result will be the ACL for the newly created object.

revoke clj

(revoke grantee permission)

Returns a function that removes a grant map from a set of grants. See update-bucket-acl.

update-bucket-acl clj

(update-bucket-acl cred bucket & funcs)

Update the access control list (ACL) for the named bucket using functions that update a set of grants (see get-bucket-acl).

This function is often used with the grant and revoke functions, e.g.

(update-bucket-acl cred bucket (grant :all-users :read) (grant {:email "[e-mail]"} :full-control) (revoke {:email "[e-mail]"} :write))

update-object-acl clj

(update-object-acl cred bucket key & funcs)

Updates the access control list (ACL) for the supplied object using functions that update a set of grants (see update-bucket-acl for more details).