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Included review availability: Your plan provides up to 12 included reviews per hour; 11 remain after this review. 📝 WalkthroughWalkthroughAWS instance-type validation now performs targeted EC2 metadata lookups. Results are cached by instance type. Invalid types receive validation errors, other lookup failures remain internal errors, and tests use a mocked EC2 client. ChangesAWS instance-type validation
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to AWS instance-type validation now fetches and caches only configured instance types, reducing region-wide lookup work without an identified current-head merge risk. 🚥 Pre-merge checks | ✅ 14 | ❌ 1❌ Failed checks (1 warning)
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Full details: Stable And Deterministic Test NamesExplanation PASS. The pull-request diff from the branch point adds no Ginkgo Full details: Test Structure And QualityExplanation PASS: The pull request adds or modifies only standard Go tests that use Full details: Microshift Test CompatibilityExplanation No new Ginkgo e2e tests were added. The pull request adds standard Go tests in Full details: Single Node Openshift (Sno) Test CompatibilityExplanation PASS: The PR adds no Ginkgo e2e tests. The new test uses Go's standard Full details: Topology-Aware Scheduling CompatibilityExplanation PASS: The pull request changes AWS EC2 metadata lookup and GCP firewall health-check rules. The changed files do not add or modify deployment manifests, operator scheduling code, pod affinity, topology spread constraints, node selectors, tolerations, replica logic, or PDBs. No topology-specific scheduling failure condition applies. Full details: Ote Binary Stdout ContractExplanation PASS. The PR changes only AWS instance-type lookup, metadata caching, validation, error handling, and test HTTP mocking. The isolated diff from the PR base adds no Full details: Ipv6 And Disconnected Network Test CompatibilityExplanation No new Ginkgo e2e tests were added. The changed tests use the standard Go Full details: No-Weak-CryptoExplanation The PR adds no MD5, SHA1, DES, 3DES, RC4, Blowfish, ECB, custom cryptography, or secret/token comparisons. The only added Full details: Container-PrivilegesExplanation The PR changes only five Go files under Full details: No-Sensitive-Data-In-LogsExplanation PASS: The pull request adds no logging or output calls. The new code only constructs errors and performs EC2 lookups. Error text includes the requested EC2 instance type, which is an infrastructure configuration value and not a password, token, API key, PII, session ID, hostname, or customer data. Test credentials are static mock values and are not logged. ✨ Finishing Touches🧪 Generate unit tests (beta)
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In `@pkg/asset/installconfig/aws/instancetypes.go`:
- Line 46: Update getInstanceType so the EC2 describe filter performs an exact
match for the configured instance type, preventing wildcard results from being
treated as the requested value; alternatively use InstanceTypes for literal
lookups and verify the returned InstanceType matches. Add a regression test
covering a wildcard such as r7* and confirming it is not accepted as an exact
configured type.
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pkg/asset/installconfig/aws/instancetypes.gopkg/asset/installconfig/aws/metadata.gopkg/asset/installconfig/aws/validation.gopkg/asset/installconfig/aws/validation_test.go
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/test e2e-aws-default-config |
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/verified by e2es Not much saving (few seconds). Maybe when CI gets busy, we will see if it helps (against the API rate limiting). |
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/test okd-scos-images |
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| for _, arch := range sdkTypeInfo.ProcessorInfo.SupportedArchitectures { | ||
| typeInfo.Arches = append(typeInfo.Arches, string(arch)) | ||
| } | ||
| // A nonexistent type is reported as an InvalidInstanceType error above, so an |
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The comment asserts a nonexistent type is "reported as an InvalidInstanceType error above, so an empty result here is an unexpected API response." But DescribeInstanceTypes defaults IncludeUnsupportedInRegion=false — types not offered in the current region are filtered out of the response. An install-config naming a type that exists globally but isn't available in the region (e.g. m7i.metal-48xl in a region lacking it) plausibly gets HTTP 200 with an empty instanceTypeSet, which this code turns into field.InternalError: unexpected empty response describing instance type X instead of the previous actionable instance type X not found. Treat len(out.InstanceTypes)==0 as not-found, matching what images() does at images.go:25.
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Ah sorry, that comment is outdated so please ignore it :D
An install-config naming a type that exists globally but isn't available in the region (e.g. m7i.metal-48xl in a region lacking it) plausibly gets HTTP 200 with an empty instanceTypeSet
Oh, in this case, we call DescribeInstanceTypes by specifying the instance type directly via parameter InstanceType; thus, the AWS API will return InvalidInstanceType error for non-existing, non-supported or typo value (treated as non-existing).
# typo with include-unsupported-in-region
$ aws ec2 describe-instance-types --instance-types m5.xltrg --region=us-west-2 --include-unsupported-in-region
aws: [ERROR]: An error occurred (InvalidInstanceType) when calling the DescribeInstanceTypes operation: The following supplied instance types do not exist: [m5.xltrg]
# typo without include-unsupported-in-region
$ aws ec2 describe-instance-types --instance-types m5.xltrg --region=us-west-2
aws: [ERROR]: An error occurred (InvalidInstanceType) when calling the DescribeInstanceTypes operation: The following supplied instance types do not exist: [m5.xltrg]
# valid type but not supported in region
$ aws ec2 describe-instance-types --instance-types m8idn.xlarge --region=ap-southeast-6
aws: [ERROR]: An error occurred (InvalidInstanceType) when calling the DescribeInstanceTypes operation: The following supplied instance types do not exist: [m8idn.xlarge]Since the API should throw an error, the empty response is an API misbehaving and returns an "internal error" as intended 👍
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Treat len(out.InstanceTypes)==0 as not-found, matching what images() does at images.go:25.
That case should not happen either because a non-existing/typo image will return InvalidAMIID.NotFound or InvalidAMIID.Malformed.
| return InstanceType{}, err | ||
| } | ||
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| t, err := getInstanceType(ctx, client, instanceType) |
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There are instances where errors are cached or held on to. Do we want to do that here?
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This is a good idea 👍, but I'd defer since it may not bring much improvement.
There are theoretically only a maximum of 4 API calls to fetch instance type (i.e. defaultMachinePlatform, master, worker and edge).
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Look up only the instance types referenced by the install config and cache the results, rather than paginating over every type in the region.
Provide an httpmock-backed client returning an empty DescribeInstanceTypes response so unknown types resolve to not-found instead of attempting a live EC2 call.
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/test e2e-aws-default-config |
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Description
This PR updates the installer to lazily look up only the instance types referenced by the install config and cache the results, rather than paginating over every type in the region.
Why: If an explicit type is defined in the install-config, there's a noticeable delay during install where the install paginates through all the available type. As AWS introduces more types, this list will just keep growing, making install slower (in CI).
Let's see if this help 👀
Summary by CodeRabbit
Enhancements
Bug Fixes