aws-sdk-for-zig/build.zig
Emil Lerch 090c06c403
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add explicit smithy dependency of aws module
2023-09-05 16:38:37 -07:00

186 lines
7.3 KiB
Zig

const std = @import("std");
const builtin = @import("builtin");
const Builder = @import("std").build.Builder;
const Package = @import("Package.zig");
const models_url = "https://github.com/aws/aws-sdk-go-v2/archive/7502ff360b1c3b79cbe117437327f6ff5fb89f65.tar.gz";
const models_hash: ?[]const u8 = "1220a414719bff14c9362fb1c695e3346fa12ec2e728bae5757a57aae7738916ffd2";
const models_subdir = "codegen/sdk-codegen/aws-models/"; // note will probably not work on windows
const models_dir = "p" ++ std.fs.path.sep_str ++ (models_hash orelse "") ++ std.fs.path.sep_str ++ models_subdir;
pub fn build(b: *Builder) !void {
// Standard target options allows the person running `zig build` to choose
// what target to build for. Here we do not override the defaults, which
// means any target is allowed, and the default is native. Other options
// for restricting supported target set are available.
const target = b.standardTargetOptions(.{});
// Standard release options allow the person running `zig build` to select
// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
const optimize = b.standardOptimizeOption(.{});
// TODO: Embed the current git version in the code. We can do this
// by looking for .git/HEAD (if it exists, follow the ref to /ref/heads/whatevs,
// grab that commit, and use b.addOptions/exe.addOptions to generate the
// Options file. See https://github.com/ziglang/zig/issues/14979 for usage
// example.
//
// From there, I'm not sure what the generated file looks like or quite how
// to use, but that should be easy. It may also give some ideas on the
// code gen piece itself, though it might be nice to leave as a seperate
// executable
// TODO: This executable should not be built when importing as a package.
// It relies on code gen and is all fouled up when getting imported
const exe = b.addExecutable(.{
.name = "demo",
.root_source_file = .{ .path = "src/main.zig" },
.target = target,
.optimize = optimize,
});
const smithy_dep = b.dependency("smithy", .{
// These are the arguments to the dependency. It expects a target and optimization level.
.target = target,
.optimize = optimize,
});
const smithy_module = smithy_dep.module("smithy");
exe.addModule("smithy", smithy_module); // not sure this should be here...
const module = b.addModule("aws", .{
.source_file = .{ .path = "src/aws.zig" },
.dependencies = &[_]std.build.ModuleDependency{
.{ .name = "smithy", .module = smithy_module },
},
});
exe.addModule("aws", module);
// TODO: This does not work correctly due to https://github.com/ziglang/zig/issues/16354
//
// We are working here with kind of a weird dependency though. So we can do this
// another way
//
// TODO: These target/optimize are not correct, as we need to run the thing
// const codegen = b.anonymousDependency("codegen/", @import("codegen/build.zig"), .{
// .target = target,
// .optimize = optimize,
// });
// const codegen_cmd = b.addRunArtifact(codegen.artifact("codegen"));
// exe.step.dependOn(&codegen_cmd.step);
const run_cmd = b.addRunArtifact(exe);
run_cmd.step.dependOn(b.getInstallStep());
if (b.args) |args| {
run_cmd.addArgs(args);
}
const run_step = b.step("run", "Run the app");
run_step.dependOn(&run_cmd.step);
// Creates a step for unit testing. This only builds the test executable
// but does not run it.
const unit_tests = b.addTest(.{
.root_source_file = .{ .path = "src/aws.zig" },
.target = target,
.optimize = optimize,
});
unit_tests.addModule("smithy", smithy_dep.module("smithy"));
const run_unit_tests = b.addRunArtifact(unit_tests);
// Similar to creating the run step earlier, this exposes a `test` step to
// the `zig build --help` menu, providing a way for the user to request
// running the unit tests.
const test_step = b.step("test", "Run unit tests");
test_step.dependOn(&run_unit_tests.step);
const fm = b.step("fetch", "Fetch model files");
var fetch_step = FetchStep.create(b, models_url, models_hash);
fm.dependOn(&fetch_step.step);
{
const cg = b.step("gen", "Generate zig service code from smithy models");
const cg_exe = b.addExecutable(.{
.name = "codegen",
.root_source_file = .{ .path = "codegen/src/main.zig" },
// We need this generated for the host, not the real target
// .target = target,
.optimize = if (b.verbose) .Debug else .ReleaseSafe,
});
cg_exe.addModule("smithy", smithy_dep.module("smithy"));
var cg_cmd = b.addRunArtifact(cg_exe);
cg_cmd.addArg("--models");
cg_cmd.addArg(try std.fs.path.join(
b.allocator,
&[_][]const u8{ b.global_cache_root.path.?, models_dir },
));
cg_cmd.addArg("--output");
cg_cmd.addDirectoryArg(std.Build.FileSource.relative("src/models"));
if (b.verbose)
cg_cmd.addArg("--verbose");
cg_cmd.step.dependOn(&fetch_step.step);
// TODO: this should use zig_exe from std.Build
// codegen should store a hash in a comment
// this would be hash of the exe that created the file
// concatenated with hash of input json. this would
// allow skipping generated files. May not include hash
// of contents of output file as maybe we want to tweak
// manually??
//
// All the hashes can be in service_manifest.zig, which
// could be fun to just parse and go nuts. Top of
// file, generator exe hash. Each import has comment
// with both input and output hash and we can decide
// later about warning on manual changes...
cg.dependOn(&cg_cmd.step);
exe.step.dependOn(cg);
unit_tests.step.dependOn(cg);
}
b.installArtifact(exe);
}
const FetchStep = struct {
step: std.Build.Step,
url: []const u8,
hash: ?[]const u8,
pub fn create(owner: *std.Build, url: []const u8, hash: ?[]const u8) *FetchStep {
const fs = owner.allocator.create(FetchStep) catch @panic("OOM");
fs.* = .{
.step = std.Build.Step.init(.{
.id = .custom,
.name = "FetchStep",
.owner = owner,
.makeFn = make,
}),
.url = url,
.hash = hash,
};
return fs;
}
fn make(step: *std.Build.Step, prog_node: *std.Progress.Node) !void {
const b = step.owner;
const self = @fieldParentPtr(FetchStep, "step", step);
const alloc = b.allocator;
var http_client: std.http.Client = .{ .allocator = alloc };
defer http_client.deinit();
var thread_pool: std.Thread.Pool = undefined;
try thread_pool.init(.{ .allocator = alloc });
defer thread_pool.deinit();
const pkg = try Package.fetchAndUnpack(
&thread_pool,
&http_client,
b.global_cache_root,
.{
.url = self.url,
.hash = self.hash,
},
self.url,
prog_node,
);
defer alloc.destroy(pkg);
defer pkg.deinit();
}
};