feat(scale-set): add service controller

lambdas/libs/compute-providers/aws/ec2/scale-set.ts

@@ -0,0 +1,32 @@
+import type { ScaleSetComputeProviderModule, ScaleSetComputeProviderPlugin } from '../../scale-set';
+
+import { createEc2ScaleSetProvider, type Ec2ScaleSetProviderDependencies } from './src/scale-set/provider';
+
+export type { Ec2ScaleSetProviderConfig, Ec2ScaleSetProviderDependencies } from './src/scale-set/provider';
+export { createEc2ScaleSetProvider, parseEc2ScaleSetProviderConfig } from './src/scale-set/provider';
+
+export function createEc2ScaleSetPlugin(
+  dependencies: Ec2ScaleSetProviderDependencies = {},
+): ScaleSetComputeProviderPlugin<'ec2'> {
+  return {
+    type: 'ec2',
+    capabilities: {
+      environmentVariables: {},
+      create: ({ runnerConfigName, scaleSetId, githubScope, configuration }) =>
+        createEc2ScaleSetProvider(
+          {
+            runnerConfigName,
+            scaleSetId,
+            githubScope,
+            configuration: configuration as Parameters<typeof createEc2ScaleSetProvider>[0]['configuration'],
+          },
+          dependencies,
+        ),
+    },
+  };
+}
+
+export const provider = {
+  type: 'ec2',
+  createPlugin: createEc2ScaleSetPlugin,
+} satisfies ScaleSetComputeProviderModule<'ec2'>;

lambdas/libs/compute-providers/aws/ec2/src/scale-set/configuration.test.ts

@@ -0,0 +1,29 @@
+import { describe, expect, it } from 'vitest';
+
+import { parseEc2ScaleSetProviderConfig } from './configuration';
+import { config } from './test/fixtures';
+
+describe('EC2 scale-set provider configuration', () => {
+  it('strictly parses the supported provider-owned configuration', () => {
+    expect(parseEc2ScaleSetProviderConfig(config)).toMatchObject(config);
+    expect(parseEc2ScaleSetProviderConfig({ ...config, runnerNamePrefix: '' })).toMatchObject({
+      runnerNamePrefix: '',
+    });
+    expect(parseEc2ScaleSetProviderConfig({ ...config, runnerNamePrefix: 'r'.repeat(45) })).toMatchObject({
+      runnerNamePrefix: 'r'.repeat(45),
+    });
+  });
+
+  it.each([
+    [{ ...config, region: 'eu-west-one' }],
+    [{ ...config, subnets: ['subnet-12345678', 'subnet-12345678'] }],
+    [{ ...config, ec2instanceCriteria: { ...config.ec2instanceCriteria, instanceAllocationStrategy: 'diversified' } }],
+    [{ ...config, ec2OverrideConfig: { UserData: 'untrusted' } }],
+    [{ ...config, scaleErrors: ['ThrottlingException'] }],
+    [{ ...config, ssmParameterTags: [{ Key: 'aws:owner', Value: 'untrusted' }] }],
+    [{ ...config, runnerNamePrefix: 'r'.repeat(46) }],
+    [{ ...config, bootTimeoutMinutes: 10 }],
+  ])('rejects invalid or unsupported values instead of forwarding them to AWS', (invalid) => {
+    expect(() => parseEc2ScaleSetProviderConfig(invalid)).toThrow();
+  });
+});