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individual service support - evaluation exceeded 1000 branches

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This commit is contained in:
Emil Lerch 2021-06-10 14:09:22 -07:00
parent dff03429d9
commit f9e6f92026
Signed by: lobo
GPG Key ID: A7B62D657EF764F8
1 changed files with 56 additions and 17 deletions
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73
src/servicemodel.zig
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@ -1,23 +1,51 @@
const std = @import("std");
const expectEqualStrings = std.testing.expectEqualStrings;
// TODO: Make generic
fn Services() type {
pub fn Services(service_imports: anytype) type {
// This service list can be imported from a master file of all services
// provided by codegen
const service_list = @import("codegen/service_manifest.zig").services;
// From here, the fields of our structure can be generated at comptime...
var fields: [service_list.len]std.builtin.TypeInfo.StructField = undefined;
var fields: [serviceCount(service_list, service_imports)]std.builtin.TypeInfo.StructField = undefined;
var inx = 0;
for (fields) |*item, i| {
const import = @field(@import("codegen/models/" ++ service_list[i].file_name), service_list[i].export_name);
item.* = .{
.name = service_list[i].name,
.field_type = @TypeOf(import),
.default_value = import,
.is_comptime = false,
.alignment = 0,
};
if (service_imports.len == 0) {
const import = @field(@import("codegen/models/" ++ service_list[i].file_name), service_list[i].export_name);
item.* = .{
.name = service_list[i].name,
.field_type = @TypeOf(import),
.default_value = import,
.is_comptime = false,
.alignment = 0,
};
continue;
}
var found = false;
// we will loop through the big list and check each service
// against the list of desired imports
while (inx < service_list.len) {
for (service_imports) |si| {
if (std.mem.eql(u8, @tagName(si), service_list[inx].name)) {
const import = @field(@import("codegen/models/" ++ service_list[inx].file_name), service_list[inx].export_name);
item.* = .{
.name = service_list[inx].name,
.field_type = @TypeOf(import),
.default_value = import,
.is_comptime = false,
.alignment = 0,
};
found = true;
break;
}
}
inx = inx + 1; // service found or not in list - move to next service
if (found) break;
}
if (!found)
@compileError("imported service(s) not found");
}
// finally, generate the type
@ -30,21 +58,32 @@ fn Services() type {
},
});
}
// TODO: One constant to rule them all is a bit much. We can keep this
// in the back pocket, but let's move to a factory style getService("blah");
pub const services = Services(){};
fn serviceCount(service_list: anytype, desired_services: anytype) usize {
if (desired_services.len == 0) return service_list.len;
return desired_services.len;
}
/// Using this constant may blow up build times. Recommed using Services()
/// function directly, e.g. const services = Services(.{.sts, .ec2, .s3, .ddb}){};
pub const services = Services(.{}){};
test "services includes sts" {
expectEqualStrings("2011-06-15", services.sts.version);
try expectEqualStrings("2011-06-15", services.sts.version);
}
test "sts includes get_caller_identity" {
expectEqualStrings("GetCallerIdentity", services.sts.get_caller_identity.action_name);
try expectEqualStrings("GetCallerIdentity", services.sts.get_caller_identity.action_name);
}
test "can get service and action name from request" {
// get request object. This call doesn't have parameters
const req = services.sts.get_caller_identity.Request{};
// const metadata = @TypeOf(req).metaInfo();
const metadata = req.metaInfo();
expectEqualStrings("2011-06-15", metadata.service.version);
try expectEqualStrings("2011-06-15", metadata.service.version);
// expectEqualStrings("GetCallerIdentity", metadata.action.action_name);
}
test "can filter services" {
const filtered_services = Services(.{ .sts, .waf_v2 }){};
// const filtered_services = Services(.{.sts}){};
try expectEqualStrings("2011-06-15", filtered_services.sts.version);
}