2022-02-18 19:30:19 +00:00
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# AWS SDK for Zig
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2021-04-27 18:24:01 +00:00
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2022-01-20 15:47:14 +00:00
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[](https://drone.lerch.org/api/badges/lobo/aws-sdk-for-zig/)
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2022-01-11 19:19:40 +00:00
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2022-05-29 03:14:42 +00:00
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This SDK currently supports all AWS services except S3. See TODO list below.
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2021-04-27 18:24:01 +00:00
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2022-05-25 22:34:24 +00:00
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Current executable size for the demo is 1.7M (90k of which is the AWS PEM file,
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2022-02-16 22:14:54 +00:00
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and approximately 600K for XML services) after compiling with -Drelease-safe and
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2022-01-20 20:18:47 +00:00
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[stripping the executable after compilation](https://github.com/ziglang/zig/issues/351).
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2022-02-16 22:14:54 +00:00
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This is for x86_linux, and will vary based on services used. Tested targets:
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2022-01-20 20:18:47 +00:00
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* x86_64-linux
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* riscv64-linux
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* aarch64-linux
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2022-01-20 20:31:45 +00:00
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* x86_64-windows
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2022-01-20 20:18:47 +00:00
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* arm-linux
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2022-02-09 06:36:36 +00:00
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* aarch64-macos
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* x86_64-macos
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2021-04-27 18:24:01 +00:00
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2022-02-09 06:36:36 +00:00
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Tested targets are built, but not continuously tested, by CI.
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2022-01-20 20:31:45 +00:00
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2021-04-27 18:24:01 +00:00
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## Building
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2022-01-11 19:19:40 +00:00
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`zig build` should work. It will build the code generation project, run
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the code generation, then build the main project with the generated code.
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2021-04-27 18:24:01 +00:00
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2022-01-11 19:19:40 +00:00
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First time build should use `zig build -Dfetch` to fetch dependent packages
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(zfetch and friends).
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## Running
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2022-01-11 19:19:40 +00:00
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This library mimics the aws c libraries for it's work, so it operates like most
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other 'AWS things'. main.zig gives you a handful of examples for working with services.
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2021-04-27 18:24:01 +00:00
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For local testing or alternative endpoints, there's no real standard, so
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there is code to look for `AWS_ENDPOINT_URL` environment variable that will
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2022-01-20 15:41:35 +00:00
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supersede all other configuration. Note that an alternative endpoint may
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require passing in a client option to specify an different TLS root certificate
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(pass null to disable certificate verification).
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2022-02-10 23:29:51 +00:00
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The [old branch](https://github.com/elerch/aws-sdk-for-zig/tree/aws-crt) exists
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2022-02-16 22:14:54 +00:00
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for posterity, and supports x86_64 linux. The old branch is deprecated.
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2022-01-20 03:37:17 +00:00
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## Limitations
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2022-05-29 03:14:42 +00:00
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There are many nuances of AWS V4 signature calculation. S3 is not supported
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because it uses many of these edge cases. Also endpoint calculation is special
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for S3. WebIdentityToken is not yet implemented.
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2022-01-20 03:37:17 +00:00
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2021-04-27 18:24:01 +00:00
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TODO List:
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2022-05-29 03:14:42 +00:00
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* Implement initial S3 support. This involves:
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* Implementation of AWS SigV4 signature calculation for S3, which is unique
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* Implementation of S3 endpoint calculation, which is also unique to this service
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2022-03-10 17:14:24 +00:00
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* Bump to zig 0.9.1. iguanaTLS, used in zFetch is still [working out 0.9.1 issues](https://github.com/alexnask/iguanaTLS/pull/29)
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2022-01-11 19:19:40 +00:00
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* Implement sigv4a signing
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2022-02-10 17:45:18 +00:00
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* Implement jitter/exponential backoff
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* Implement timeouts and other TODO's in the code
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* Add option to cache signature keys
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2021-04-27 18:24:01 +00:00
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Compiler wishlist/watchlist:
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* [Merge PR to allow stripping -static](https://github.com/ziglang/zig/pull/8248)
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* [comptime allocations](https://github.com/ziglang/zig/issues/1291) so we can read files, etc (or is there another way)
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