Overcast is alpha — behaviour and APIs may change between releases. Pin your version and read the changelog before upgrading.

overcast local AWS emulator

CloudFront operations

Every CloudFront operation Overcast declares — 89 of 89 implemented — with status, behaviour notes and a link to the AWS API reference for each.

All 89 listed operations are implemented. Back to CloudFront.

Summary

Category	✅ Supported
Distributions	7
Invalidations	3
OAC / OAI	11
Tagging	3
Policies	18
Proxy	1
Functions	8
Keys & Crypto	12
Monitoring	8
FLE	12
Deployment	6

Endpoints

Distributions

Operation	Status	Notes	AWS Docs
`CreateDistribution`	✅ Supported	CallerReference idempotency; Status always “Deployed”	docs
`GetDistribution`	✅ Supported	Returns ETag header	docs
`GetDistributionConfig`	✅ Supported	Returns DistributionConfig portion + ETag	docs
`UpdateDistribution`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteDistribution`	✅ Supported	Requires If-Match + Enabled=false	docs
`ListDistributions`	✅ Supported	Marker/MaxItems pagination via serviceutil.Paginate	docs
`CreateDistributionWithTags`	✅ Supported	Creates distribution + tags atomically; custom_id tag support	docs

Invalidations

Operation	Status	Notes	AWS Docs
`CreateInvalidation`	✅ Supported	Supports path and tag invalidations (#tag); Status instantly “Completed”	docs
`GetInvalidation`	✅ Supported	Returns invalidation by distribution + invalidation ID	docs
`ListInvalidations`	✅ Supported	Marker/MaxItems pagination	docs

OAC / OAI

Operation	Status	Notes	AWS Docs
`CreateOriginAccessControl`	✅ Supported	Generates ID, returns ETag	docs
`GetOriginAccessControl`	✅ Supported	Returns OAC by ID with ETag	docs
`UpdateOriginAccessControl`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteOriginAccessControl`	✅ Supported	Requires If-Match ETag	docs
`ListOriginAccessControls`	✅ Supported	Marker/MaxItems pagination	docs
`CreateCloudFrontOriginAccessIdentity`	✅ Supported	CallerReference required; generates S3CanonicalUserId	docs
`GetCloudFrontOriginAccessIdentity`	✅ Supported	Returns OAI by ID with ETag	docs
`GetCloudFrontOriginAccessIdentityConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdateCloudFrontOriginAccessIdentity`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteCloudFrontOriginAccessIdentity`	✅ Supported	Requires If-Match ETag	docs
`ListCloudFrontOriginAccessIdentities`	✅ Supported	Marker/MaxItems pagination	docs

Tagging

Operation	Status	Notes	AWS Docs
`ListTagsForResource`	✅ Supported	Returns tags by resource ARN	docs
`TagResource`	✅ Supported	Merges tags into existing set	docs
`UntagResource`	✅ Supported	Removes specified tag keys	docs

Policies

Operation	Status	Notes	AWS Docs
`CreateCachePolicy`	✅ Supported	Generates ID, returns ETag	docs
`GetCachePolicy`	✅ Supported	Returns policy by ID with ETag	docs
`GetCachePolicyConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdateCachePolicy`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteCachePolicy`	✅ Supported	Requires If-Match ETag	docs
`ListCachePolicies`	✅ Supported	Marker/MaxItems pagination	docs
`CreateOriginRequestPolicy`	✅ Supported	Generates ID, returns ETag	docs
`GetOriginRequestPolicy`	✅ Supported	Returns policy by ID with ETag	docs
`GetOriginRequestPolicyConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdateOriginRequestPolicy`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteOriginRequestPolicy`	✅ Supported	Requires If-Match ETag	docs
`ListOriginRequestPolicies`	✅ Supported	Marker/MaxItems pagination	docs
`CreateResponseHeadersPolicy`	✅ Supported	Generates ID, returns ETag	docs
`GetResponseHeadersPolicy`	✅ Supported	Returns policy by ID with ETag	docs
`GetResponseHeadersPolicyConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdateResponseHeadersPolicy`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteResponseHeadersPolicy`	✅ Supported	Requires If-Match ETag	docs
`ListResponseHeadersPolicies`	✅ Supported	Marker/MaxItems pagination	docs

Proxy

Operation	Status	Notes	AWS Docs
`ProxyRequest`	✅ Supported	Emulator extension: path-pattern matching, origin forwarding (dialled locally when Overcast answers for the origin), GET response caching, CloudFront Functions, origin-group failover, geo restriction and custom error responses	docs

Functions

Operation	Status	Notes	AWS Docs
`CreateFunction`	✅ Supported	Stores code + config; Stage=DEVELOPMENT; returns ETag	docs
`DescribeFunction`	✅ Supported	Returns FunctionSummary with metadata	docs
`GetFunction`	✅ Supported	Returns raw function code (base64) with ETag	docs
`UpdateFunction`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteFunction`	✅ Supported	Requires If-Match ETag	docs
`ListFunctions`	✅ Supported	Filters by Stage query param; MaxItems pagination	docs
`TestFunction`	✅ Supported	Returns a fixed success result without running the code; a function attached to a behaviour does execute on requests through the distribution	docs
`PublishFunction`	✅ Supported	Promotes DEVELOPMENT → LIVE stage	docs

Keys & Crypto

Operation	Status	Notes	AWS Docs
`CreateKeyGroup`	✅ Supported	Generates ID, returns ETag	docs
`GetKeyGroup`	✅ Supported	Returns key group by ID with ETag	docs
`GetKeyGroupConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdateKeyGroup`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteKeyGroup`	✅ Supported	Requires If-Match ETag	docs
`ListKeyGroups`	✅ Supported	MaxItems pagination	docs
`CreatePublicKey`	✅ Supported	CallerReference dedup; generates ID + ETag	docs
`GetPublicKey`	✅ Supported	Returns public key by ID with ETag	docs
`GetPublicKeyConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdatePublicKey`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeletePublicKey`	✅ Supported	Requires If-Match ETag	docs
`ListPublicKeys`	✅ Supported	MaxItems pagination	docs

Monitoring

Operation	Status	Notes	AWS Docs
`CreateMonitoringSubscription`	✅ Supported	Per-distribution; requires existing distribution	docs
`GetMonitoringSubscription`	✅ Supported	Returns subscription by distribution ID	docs
`DeleteMonitoringSubscription`	✅ Supported	Removes subscription for distribution	docs
`CreateRealtimeLogConfig`	✅ Supported	Name-based; generates ARN; duplicate name check	docs
`GetRealtimeLogConfig`	✅ Supported	Lookup by Name or ARN in request body	docs
`UpdateRealtimeLogConfig`	✅ Supported	Updates by Name in request body	docs
`DeleteRealtimeLogConfig`	✅ Supported	Deletes by Name or ARN in request body	docs
`ListRealtimeLogConfigs`	✅ Supported	MaxItems pagination	docs

FLE

Operation	Status	Notes	AWS Docs
`CreateFieldLevelEncryptionConfig`	✅ Supported	CallerReference required; generates ID	docs
`GetFieldLevelEncryption`	✅ Supported	Returns FLE config by ID with ETag	docs
`GetFieldLevelEncryptionConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdateFieldLevelEncryptionConfig`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteFieldLevelEncryption`	✅ Supported	Requires If-Match ETag	docs
`ListFieldLevelEncryptionConfigs`	✅ Supported	MaxItems pagination	docs
`CreateFieldLevelEncryptionProfile`	✅ Supported	CallerReference required; generates ID	docs
`GetFieldLevelEncryptionProfile`	✅ Supported	Returns FLE profile by ID with ETag	docs
`GetFieldLevelEncryptionProfileConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdateFieldLevelEncryptionProfile`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteFieldLevelEncryptionProfile`	✅ Supported	Requires If-Match ETag	docs
`ListFieldLevelEncryptionProfiles`	✅ Supported	MaxItems pagination	docs

Deployment

Operation	Status	Notes	AWS Docs
`CreateContinuousDeploymentPolicy`	✅ Supported	Generates ID, returns ETag	docs
`GetContinuousDeploymentPolicy`	✅ Supported	Returns policy by ID with ETag	docs
`GetContinuousDeploymentPolicyConfig`	✅ Supported	Returns config portion + ETag	docs
`UpdateContinuousDeploymentPolicy`	✅ Supported	Requires If-Match ETag; bumps version	docs
`DeleteContinuousDeploymentPolicy`	✅ Supported	Requires If-Match ETag	docs
`ListContinuousDeploymentPolicies`	✅ Supported	MaxItems pagination	docs

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