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Remove inflections from generated services #347

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merged 9 commits into from
Aug 17, 2015
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@lsegal lsegal commented Aug 11, 2015

This pull request removes inflections and inflection maps from generated service names. Using inflection causes a number of maintenance issues that would create unnecessary complexity in the SDK, ultimately leading to technical debt and possible bugs down the road. There is an aesthetic benefit to following inflection patterns, but over time the maintenance burden of updating the inflection list has outweighed this benefit.

Some notes about how inflection is managed in the SDK today:

  • Services use a wide variety of naming mechanisms that don't all follow the
    Go standard.
  • We currently maintain a curated list in internal/model/inflections.csv
    which contains these inflections.
  • This list is partially automated but each entry is manually verified and
    inflected as elements are added.
  • This process is error-prone and ambiguous as multiple seemingly similar
    entries are added with different semantic meanings.
  • The complexity of managing inflections increases exponentially as enumerations
    are added to the SDK.

Upgrade Path

Because this is such an invasive change, a utility awsmigrate-renamer was implemented as part of this PR to perform a best-effort migration of userland code to the latest syntax.

In order to use this tool, install with:

$ go install github.com/aws/aws-sdk-go/awsmigrate/awsmigrate-renamer

And run with:

$ awsmigrate-renamer [-dryrun] [-verbose] <pkgA> [pkgB ...]

For example:

$ awsmigrate-renamer github.com/user/lib/pkg1 github.com/user/lib/pkg2

This tool will modify contents on disk. Please ensure that the packages are backed by version control prior to running this tool.

@jasdel jasdel merged commit 866e234 into master Aug 17, 2015
@catsby
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catsby commented Aug 17, 2015

I ran the recommended migration tool on the Terraform project and everything seems to work as expected. Big thanks for including that!

yay

@gyuho
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gyuho commented Aug 20, 2015

Thanks a lot for the migration tool!

@jasdel jasdel deleted the remove-inflections branch August 20, 2015 19:19
skotambkar added a commit to skotambkar/aws-sdk-go that referenced this pull request May 20, 2021
Ports v1 SDK's ability to expose DNS Suffix for partitions.

Fixes aws#347 .
skotambkar added a commit to skotambkar/aws-sdk-go that referenced this pull request May 20, 2021
Services
---
* Synced the V2 SDK with latest AWS service API definitions.

SDK Enhancements
---
* `aws/endpoints`: Expose DNSSuffix for partitions ([aws#369](aws/aws-sdk-go-v2#369))
  * Exposes the underlying partition metadata's DNSSuffix value via the `DNSSuffix` method on the endpoint's `Partition` type. This allows access to the partition's DNS suffix, e.g. "amazon.com".
  * Fixes [aws#347](aws/aws-sdk-go-v2#347)
* `private/protocol`: Add support for parsing fractional timestamp ([aws#367](aws/aws-sdk-go-v2#367))
  * Fixes the SDK's ability to parse fractional unix timestamp values and adds tests.
  * Fixes [aws#365](aws/aws-sdk-go-v2#365)
* `aws/ec2metadata`: Add marketplaceProductCodes to EC2 Instance Identity Document ([aws#374](aws/aws-sdk-go-v2#374))
  * Adds `MarketplaceProductCodes` to the EC2 Instance Metadata's Identity Document. The ec2metadata client will now retrieve these values if they are available.
  * Related to: [aws#2781](aws#2781)
* `aws`: Adds configurations to the default retryer ([aws#375](aws/aws-sdk-go-v2#375))
  * Provides more customization options for retryer by adding a constructor for default Retryer which accepts functional options. Adds NoOpRetryer to support no retry behavior. Exposes members of default retryer.
  * Updates the underlying logic used by the default retryer to calculate jittered delay for retry. Handles int overflow for retry delay.
  * Fixes [aws#370](aws/aws-sdk-go-v2#370)
* `aws` : Refactors request retry behavior path logic ([aws#384](aws/aws-sdk-go-v2#384))
  * Retry utilities now follow a consistent code path. aws.IsErrorRetryable is the primary entry point to determine if a request is retryable.
  * Corrects sdk's behavior by not retrying errors with status code 501. Adds support for retrying the Kinesis API error, LimitExceededException.
  * Fixes [aws#372](aws/aws-sdk-go-v2#372), [aws#145](aws/aws-sdk-go-v2#145)

SDK Bugs
---
* `aws`: Fixes bug in calculating throttled retry delay ([aws#373](aws/aws-sdk-go-v2#373))
  * The `Retry-After` duration specified in the request is now added to the Retry delay for throttled exception. Adds test for retry delays for throttled exceptions. Fixes bug where the throttled retry's math was off.
  * Fixes [aws#45](aws/aws-sdk-go-v2#45)
* `aws` : Adds missing sdk error checking when seeking readers ([aws#379](aws/aws-sdk-go-v2#379))
  * Adds support for nonseekable io.Reader. Adds support for streamed payloads for unsigned body request.
  * Fixes [aws#371](aws/aws-sdk-go-v2#371)
* `service/s3` : Fixes unexpected EOF error by s3manager ([aws#386](aws/aws-sdk-go-v2#386))
  * Fixes bug which threw unexpected EOF error when s3 upload is performed for a file of maximum allowed size
  * Fixes [aws#316](aws/aws-sdk-go-v2#316)
* `private/model` : Fixes generated API Reference docs links being invalid ([387](aws/aws-sdk-go-v2#387))
  * Fixes [aws#327](aws/aws-sdk-go-v2#327)
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4 participants