Merge #297

297: Add S3Path constructor that takes in S3Path and version r=ararslan a=hannahilea

Closes #294.

In this PR, fails if input path already has a version; could alternatively implement silently overwriting an existing version. 

Co-authored-by: hannahilea <hannahilea@users.noreply.github.com>
Co-authored-by: Hannah Robertson <hannahilea@users.noreply.github.com>
Co-authored-by: Curtis Vogt <curtis.vogt@gmail.com>

CHANGELOG.md

@@ -10,8 +10,10 @@
 - v0.11.1: The new keyword argument `returns` for `Base.write(fp::S3Path, ...)` determines the output returned from `write`, which can now be the raw `AWS.Response` (`returns=:response`) or the `S3Path` (`returns=:path`); this latter option returns an `S3Path` populated with the version ID of the written object (when versioning is enabled on the bucket) ([#293]).
 - v0.11.2: `s3_copy` supports the `parse_response` keyword allowing for access to the unparsed AWS API response ([#300]).
 - v0.11.2: Added `s3_nuke_object` function to delete all versions of an object ([#299]).
+- v0.11.2: Added `S3Path` copy constructor for allowing updating `version`, `config`, and/or `isdirectory` ([#297]).
 
 [#289]: https://github.com/JuliaCloud/AWSS3.jl/pull/289
 [#293]: https://github.com/JuliaCloud/AWSS3.jl/pull/293
+[#297]: https://github.com/JuliaCloud/AWSS3.jl/pull/297
 [#299]: https://github.com/JuliaCloud/AWSS3.jl/pull/299
 [#300]: https://github.com/JuliaCloud/AWSS3.jl/pull/300

src/s3path.jl

@@ -46,7 +46,8 @@ end
 
 """
     S3Path()
-    S3Path(str; version::$(AbstractS3Version)=nothing, config::$(AbstractS3PathConfig)=nothing)
+    S3Path(str::AbstractString; version::$(AbstractS3Version)=nothing, config::$(AbstractS3PathConfig)=nothing)
+    S3Path(path::S3Path; isdirectory=path.isdirectory, version=path.version, config=path.config)
 
 Construct a new AWS S3 path type which should be of the form
 `"s3://<bucket>/prefix/to/my/object"`.
@@ -73,8 +74,6 @@ NOTES:
 """
 S3Path() = S3Path((), "/", "", true, nothing, nothing)
 
-S3Path(path::S3Path) = path
-
 # below definition needed by FilePathsBase
 S3Path{A}() where {A<:AbstractS3PathConfig} = S3Path()
 
@@ -107,6 +106,12 @@ function S3Path(
     )
 end
 
+function S3Path(
+    path::S3Path; isdirectory=path.isdirectory, version=path.version, config=path.config
+)
+    return S3Path(path.bucket, path.key; isdirectory, config, version)
+end
+
 # To avoid a breaking change.
 function S3Path(
     str::AbstractString;

test/s3path.jl

@@ -636,6 +636,39 @@ function s3path_tests(base_config)
         @test_throws ArgumentError S3Path("s3://my_bucket/"; version="")
     end
 
+    @testset "construct S3Path from S3Path" begin
+        # Use custom config to test that config is preserved in construction
+        config = AWSConfig(; region="bogus")
+        path = S3Path("s3://my_bucket/prefix"; config)
+
+        # When no kwargs provided, return identity
+        @test S3Path(path) === path
+
+        # version kwarg overrides path.version
+        version = String('A':'Z') * String('0':'5')
+        p = S3Path(path; version)
+        @test p != path
+        @test p.bucket == path.bucket
+        @test p.key == path.key
+        @test p.config == path.config
+        @test p.version == version != path.version
+
+        # ...if version already exists, overwrite silently
+        path_versioned = S3Path(path; version)
+        alt_version = String('0':'5') * String('A':'Z')
+        p = S3Path(path_versioned; version=alt_version)
+        @test p.version == alt_version != path_versioned.version
+
+        # config kwarg overrides path.config
+        alt_config = AWSConfig(; region="foo")
+        p = S3Path(path; config=alt_config)
+        @test p.config == alt_config != path.config
+
+        # isdirectory kwarg overrides path.config
+        p = S3Path(path; isdirectory=!path.isdirectory)
+        @test p.isdirectory != path.isdirectory
+    end
+
     # `s3_list_versions` gives `SignatureDoesNotMatch` exceptions on Minio
     if is_aws(base_config)
         @testset "S3Path versioning" begin