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✏️ Tip: You can customize this high-level summary in your review settings. WalkthroughAdds AWS Transfer Family user-management API functions and helpers to ExAws.Transfer; updates mix.exs with package and Dialyzer config; replaces tests with an extensive async suite; adds Dialyzer PLT ignores and a GitHub Actions CI workflow. Changes
Sequence Diagram(s)sequenceDiagram
participant Caller
participant Transfer as ExAws.Transfer
participant Normalizer
participant OpBuilder as ExAws.Operation.JSON
Caller->>Transfer: create_user(server_id, user_name, role, opts?)
activate Transfer
Transfer->>Normalizer: format_opts / pascalize_keys
activate Normalizer
Normalizer-->>Transfer: normalized params (PascalCase keys, enums, tags, nested maps)
deactivate Normalizer
Transfer->>OpBuilder: request("TransferService", "CreateUser", params)
activate OpBuilder
OpBuilder-->>OpBuilder: build Operation.JSON (service:"transfer", data, headers x-amz-target/content-type)
OpBuilder-->>Transfer: Operation struct
deactivate OpBuilder
Transfer-->>Caller: ExAws.Operation.JSON.t()
deactivate Transfer
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~25 minutes
Pre-merge checks and finishing touches✅ Passed checks (3 passed)
✨ Finishing touches
🧪 Generate unit tests (beta)
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Actionable comments posted: 1
🧹 Nitpick comments (1)
lib/ex_aws/transfer.ex (1)
16-18: Fix doctest prompt in piped examplesIn the
delete_user/2anddescribe_user/2examples, the pipeline is split across twoiex>lines:iex> ExAws.Transfer.delete_user("...", "myuser") iex> |> ExAws.request()For valid doctests this second line should use the continuation prompt (
...>), e.g.:iex> ExAws.Transfer.delete_user("s-1234567890abcdef0", "myuser") ...> |> ExAws.request() {:ok, %{}}Same adjustment applies to the
describe_user/2example.
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mix.exs (3)
11-12: Project metadata wiring looks goodAdding
deps: deps()andpackage: package()intoproject/0is idiomatic and sets you up cleanly for publishing without affecting runtime behavior.
27-29: Dev/test‑only tooling dependency is appropriately scopedPlacing your static‑analysis / tooling dependency in the deps list with
only: [:dev, :test]andruntime: falsekeeps production releases lean while still enabling good DX in local/test environments.If you haven’t already, it’s worth running
mix deps.getand your usual CI to confirm this matches your Elixir/OTP matrix.
39-48: Hex package definition is conventional and completeThe
package/0metadata (name, licenses, links, files, maintainers) follows common Hex conventions and should work well for publishing.test/ex_aws_transfer_test.exs (1)
1-230: Thorough test coverage for the public Transfer APIThis suite does a good job pinning the contract of the user functions: it checks the ExAws operation struct shape, headers, and key/option normalization (PascalCase keys, HomeDirectoryType mapping, tag formatting) across
describe_user/2,delete_user/2,create_user/3-4, andupdate_user/2-3, plus a basic integration‑style shape check for passing ops into ExAws.lib/ex_aws/transfer.ex (1)
260-273: Request helper matches ExAws JSON pattern; headers and service look correct
request/2buildingExAws.Operation.JSON.new(:transfer, %{data: params, headers: [...]})withx-amz-targetof"#{@namespace}.#{pascalize_key(action)}"and the JSON content‑type cleanly centralizes the wire‑level details and is exercised by your tests for each operation.It’s still worth double‑checking this against the
ExAws.Operation.JSON.new/2documentation for your pinned ex_aws version to ensure the options map shape (%{data: ..., headers: ...}) matches any upstream changes.
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🧹 Nitpick comments (2)
lib/ex_aws/transfer.ex (2)
8-24: Add a summary sentence to the documentation.As noted in a previous review, the documentation should start with a summary sentence (e.g., "Deletes a user from a Transfer Family server.") before the Parameters section to maintain consistency with other function docs like
describe_user/2andcreate_user/3.
236-239: Consider rephrasing the comment for professionalism.The comment "It grosses me out..." is informal for production code. Consider a more professional phrasing like: "Note: Despite its name, Macro.camelize returns PascalCase rather than camelCase."
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test/ex_aws_transfer_test.exs (1)
lib/ex_aws/transfer.ex (4)
describe_user(54-61)delete_user(26-33)create_user(128-140)update_user(201-212)
🔇 Additional comments (11)
test/ex_aws_transfer_test.exs (6)
6-29: LGTM!The test coverage for
describe_user/2is comprehensive, validating the operation structure, service identifier, data payload, and both required headers.
31-54: LGTM!The test coverage for
delete_user/2mirrors the describe_user tests and validates all critical aspects of the operation.
56-141: LGTM!Excellent test coverage for
create_user/3andcreate_user/4. The tests thoroughly validate option transformations including pascalization, home_directory_type normalization, tag formatting, and combined options.
143-194: LGTM!These tests validate the recursive pascalization of nested structures (PosixProfile, HomeDirectoryMappings), confirming that the implementation correctly handles the nested option transformations mentioned in past review comments.
196-273: LGTM!Comprehensive test coverage for
update_user/2andupdate_user/3, validating all option transformations and ensuring consistency with the create_user behavior.
275-318: LGTM!The nested structure tests for
update_userensure consistency withcreate_user, and the integration test validates that the generated operations are compatible with ExAws functions.lib/ex_aws/transfer.ex (5)
35-61: LGTM!The
describe_user/2function is well-documented with a clear summary, parameters, examples, and implementation.
63-140: LGTM!The
create_user/3andcreate_user/4functions are well-implemented with comprehensive documentation. While a past review suggested condensing the two@specdeclarations, having separate specs for different arities is a valid and common Elixir pattern, especially with default parameters.
142-212: LGTM!The
update_user/2andupdate_user/3functions follow the same pattern ascreate_userand are well-implemented. The dual@specdeclarations are consistent with the create_user approach and represent a valid Elixir pattern.
241-268: LGTM!The option formatting and normalization functions correctly handle the conversions needed for AWS API compatibility. The
normalize_tags/1fallback pattern allows flexibility for already-formatted or custom tag structures.
270-283: LGTM!The
request/2function correctly constructs the ExAws.Operation.JSON struct with appropriate headers for AWS Transfer Family API calls. The use of@namespaceand pascalized action names aligns with AWS Transfer Service conventions.
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🧹 Nitpick comments (1)
lib/ex_aws/transfer.ex (1)
109-117: Consider tightening option types for better toolingThe
create_user_opts/update_user_optstypes are correct but quite generic (map()for nested shapes). If you want stronger dialyzer and IDE help, you could introduce named types for nested structs, e.g.:+ @type posix_profile :: %{ + uid: pos_integer(), + gid: pos_integer(), + optional(:secondary_gids) => [pos_integer()] + } + + @type tag :: %{key: binary(), value: binary()} + @type create_user_opts :: [ {:home_directory, binary()}, {:home_directory_type, :path | :logical}, - {:home_directory_mappings, [map()]}, + {:home_directory_mappings, [map()]}, {:policy, binary()}, - {:posix_profile, map()}, - {:ssh_public_key_body, binary()}, - {:tags, [map()]} + {:posix_profile, posix_profile()}, + {:ssh_public_key_body, binary()}, + {:tags, [tag()]} ]and reuse
posix_profile()inupdate_user_opts.Also applies to: 185-192
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🔇 Additional comments (7)
lib/ex_aws/transfer.ex (7)
2-7: Module docs and namespace are clear and focusedThe short
@moduledocplus centralized@namespace "TransferService"keep the module purpose and AWS target prefix obvious and easy to maintain.
8-34: Delete/describe wrappers are thin and consistentBoth
delete_user/2anddescribe_user/2build minimal param maps and delegate torequest/2in a consistent way; signatures, docs, and examples line up cleanly.Also applies to: 36-62
118-141:create_user/4normalization and merge pipeline looks solidThe
opts |> format_opts() |> pascalize_keys() |> Map.merge(%{...})pipeline gives you normalizedhome_directory_type/tagsand PascalCase keys (including nested maps) while ensuring required params (ServerId,UserName,Role) always win; the defaultopts \\ []covers the arity-3 variant cleanly.
193-213:update_user/3mirrorscreate_user/4behavior correctly
update_user/3reuses the same normalization + PascalCase path ascreate_user/4and only merges inServerId/UserName, which matches the documented surface for updates without surprising extra fields.
217-231: Recursive PascalCase conversion correctly handles nested structures
pascalize_keys/1pluspascalize_value/1(list/map fallthrough) give you full recursive key conversion while leaving scalar values untouched, which is exactly what you want for deeply nested option maps.
242-269: Option normalization helpers are cohesive and side‑effect free
format_opts/1cleanly composesnormalize_home_directory_type/1andnormalize_tags/1, withnormalize_tags/1safely handling both atom‑keyed and already‑normalized tag maps and leaving unknown shapes alone.
271-283: Sharedrequest/2helper keeps request construction DRYCentralizing
ExAws.Operation.JSON.new/2with consistent headers andx-amz-targetconstruction via@namespace+pascalize_key/1makes the public functions very small and reduces the chance of per‑call header drift.
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🧹 Nitpick comments (2)
lib/ex_aws/transfer.ex (2)
109-117: Consider tightening option type specifications.The option types use generic
map()for:posix_profileand:home_directory_mappings. While this is functional, more specific types would improve documentation and Dialyzer coverage:@type posix_profile :: %{ required(:uid) => non_neg_integer(), required(:gid) => non_neg_integer(), optional(:secondary_gids) => [non_neg_integer()] } @type home_directory_mapping :: %{ required(:entry) => binary(), required(:target) => binary(), optional(:type) => binary() } @type create_user_opts :: [ {:home_directory, binary()}, {:home_directory_type, :path | :logical}, {:home_directory_mappings, [home_directory_mapping()]}, {:policy, binary()}, {:posix_profile, posix_profile()}, {:ssh_public_key_body, binary()}, {:tags, [%{required(:key) => binary(), required(:value) => binary()}]} ]
259-270: Consider validating tag format.The pass-through clause (
tag -> tag) allows malformed tags to reach AWS, which will fail with a less clear error. For better developer experience, consider validating or warning on unexpected tag formats:defp normalize_tags(%{tags: tags} = opts) when is_list(tags) do normalized_tags = Enum.map(tags, fn %{key: k, value: v} -> %{"Key" => to_string(k), "Value" => to_string(v)} %{"Key" => _k, "Value" => _v} = tag -> tag invalid -> raise ArgumentError, "Invalid tag format: #{inspect(invalid)}. Expected %{key: ..., value: ...}" end) Map.put(opts, :tags, normalized_tags) endThat said, deferring validation to AWS is a valid library design choice—this is just a DX refinement.
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test/ex_aws_transfer_test.exs (1)
lib/ex_aws/transfer.ex (4)
describe_user(55-62)delete_user(27-34)create_user(129-141)update_user(202-213)
🔇 Additional comments (11)
mix.exs (3)
12-16: LGTM! Clean Dialyzer configuration.The Dialyzer setup is solid—PLT paths are properly configured and
halt_exit_status: trueensures type errors fail the build.
29-36: LGTM! Dependency configuration is appropriate.The permissive Jason requirement (
~> 1.2) gives downstream consumers flexibility while the resolved version (1.4.4) is current. Dialyxir is correctly scoped to dev/test only.
44-54: LGTM! Package metadata is complete.All required fields for Hex publishing are present: license, links, files, and maintainers.
test/ex_aws_transfer_test.exs (1)
1-337: LGTM! Comprehensive and well-structured test suite.The test coverage is excellent: validates operation construction, header formatting, PascalCase transformations, nested structure handling, and ExAws integration. The use of
async: trueis appropriate for these isolated unit tests.lib/ex_aws/transfer.ex (7)
1-6: LGTM! Clean module setup.Module documentation is clear and the namespace correctly identifies the AWS Transfer Family service.
8-34: LGTM! Well-documented and correctly implemented.The function properly constructs the DeleteUser request parameters and includes comprehensive documentation with examples and AWS API references.
36-62: LGTM! Consistent with delete_user pattern.The implementation correctly follows the same structure as
delete_user/2with proper parameter construction and documentation.
143-213: LGTM! Correctly implements UpdateUser operation.The implementation follows the same solid pattern as
create_userand correctly omits:tagsand:ssh_public_key_body(those can't be updated via UpdateUser per AWS API).
249-257: LGTM! Home directory type normalization is correct.The function properly converts the friendly atoms (
:path,:logical) to AWS-expected uppercase strings and passes through string values unchanged.
217-240: LGTM! Recursive pascalization correctly handles nested structures.The recursive implementation properly transforms keys at all nesting levels, addressing the concern raised in previous reviews. The comment about
Macro.camelizereturning PascalCase is a nice touch.
272-285: LGTM! Request builder correctly formats AWS Transfer Family operations.The function properly constructs
ExAws.Operation.JSONwith the correct service identifier, data payload, and protocol headers (x-amz-targetandcontent-type).
2 participants
Here are the user functions that I think we should start with. I'm going to stop here, I think, although the next logical step is to add the four obvious server functions.