utils

package
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 Go to latest Published: Jul 9, 2026 License: Apache-2.0 Imports: 33 Imported by: 0

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Index

Constants

View Source 
const (
	// TagLinkSecurityGroup is a tag that is used to identify the security group
	// that is used to allow access to VPC endpoints.
	TagLinkSecurityGroup = "bluelink:link:security-group"
	// TagLinkVPCName is a tag that is used to identify the flex VPC
	// that is used to allow access to VPC endpoints.
	TagLinkVPCName = "bluelink:link:flex-vpc:name"
	// TagBlueprintInstanceName is a tag that is used to identify the blueprint instance
	// that is used to allow access to VPC endpoints.
	TagBlueprintInstanceName = "bluelink:blueprint-instance:name"
	// TagBlueprintLinkIDPrefix is a tag prefix that is used to identify the blueprint link
	// that is used for networking resources created as a part of a link implementation.
	// Each link will have its own key entry in the tag with the link ID as the suffix.
	TagBlueprintLinkIDPrefix = "bluelink:blueprint-link:id:"
	// TagLinkVPCEndpoint is a tag that is used to identify the VPC endpoint
	// that is used to allow access to VPC endpoints.
	TagLinkVPCEndpoint = "bluelink:link:vpc-endpoint"
	// TagBluelinkService is a tag that is used to identify the service
	// that a resource such as a security group is intended to provide access to.
	TagBluelinkService = "bluelink:service"
)
View Source 
const DefaultBluelinkTagPrefix = "bluelink:"

DefaultBluelinkTagPrefix is the default prefix for Bluelink provenance tags.

View Source 
const (
	// MaxZipFileSize is the maximum size of a zip file in bytes
	// generated by the ZipInMemory function.
	MaxZipFileSize = 4 * 1024 * 1024 // 4MB
)

Variables

View Source 
var (
	// IAMRoleNameGenerator generates names for IAM roles (64 char limit).
	IAMRoleNameGenerator = DefaultUniqueNameGenerator(64)

	// IAMUserNameGenerator generates names for IAM users (64 char limit).
	IAMUserNameGenerator = DefaultUniqueNameGenerator(64)

	// IAMGroupNameGenerator generates names for IAM groups (128 char limit).
	IAMGroupNameGenerator = DefaultUniqueNameGenerator(128)

	// IAMInstanceProfileNameGenerator generates names for IAM instance profiles (128 char limit).
	IAMInstanceProfileNameGenerator = DefaultUniqueNameGenerator(128)

	// LambdaFunctionNameGenerator generates names for Lambda functions (64 char limit).
	LambdaFunctionNameGenerator = DefaultUniqueNameGenerator(64)

	// S3BucketNameGenerator generates names for S3 buckets (63 char limit).
	S3BucketNameGenerator = DefaultUniqueNameGenerator(63)

	// EC2InstanceNameGenerator generates names for EC2 instances (255 char limit).
	EC2InstanceNameGenerator = DefaultUniqueNameGenerator(255)

	// DynamoDBTableNameGenerator generates names for DynamoDB tables (255 char limit).
	DynamoDBTableNameGenerator = DefaultUniqueNameGenerator(255)

	// IAMPolicyNameGenerator generates names for IAM policies (128 char limit).
	IAMPolicyNameGenerator = DefaultUniqueNameGenerator(128)

	// IAMOIDCProviderUrlGenerator generates names for IAM OIDC providers (255 char limit).
	IAMOIDCProviderUrlGenerator = DefaultUniqueNameGenerator(255)

	// IAMSAMLProviderNameGenerator generates names for IAM SAML providers (128 char limit).
	IAMSAMLProviderNameGenerator = DefaultUniqueNameGenerator(128)

	// IAMServerCertificateNameGenerator generates names for IAM server certificates (128 char limit).
	IAMServerCertificateNameGenerator = DefaultUniqueNameGenerator(128)
)

Common name generators for different AWS services.

View Source 
var Services = map[string][]string{
	"account":         {},
	"lambda":          {},
	"iam":             {},
	"dynamodb":        {},
	"sqs":             {},
	"ssm":             {},
	"kms":             {},
	"events":          {"eventbridge"},
	"cloudcontrolapi": {"cloudcontrol"},
}

Services is a map of AWS services and their aliases.

Functions

func AWSConfigCacheKey 

func AWSConfigCacheKey(
	sessionID string,
	meta map[string]*core.MappingNode,
) string

AWSConfigCacheKey creates a cache key for the given session ID and metadata specific to a specific request for an action on a resource, data source, or link.

func AWSConfigFromProviderContext 

func AWSConfigFromProviderContext(
	ctx context.Context,
	providerContext provider.Context,
	meta map[string]*core.MappingNode,
	env map[string]string,
	loader AWSConfigLoader,
) (*aws.Config, error)

AWSConfigFromProviderContext creates an AWS config from the given provider context and environment variables.

func AWSServiceList 

func AWSServiceList() string

AWSServiceList returns a string of all the AWS services and their aliases.

func AssumeRoleOptions 

func AssumeRoleOptions(
	providerContext provider.Context,
) []func(*config.LoadOptions) error

AssumeRoleOptions returns the assume role options derived from the given provider context.

func AssumeRoleWithWebIdentityOptions 

func AssumeRoleWithWebIdentityOptions(
	providerContext provider.Context,
) []func(*config.LoadOptions) error

AssumeRoleWithWebIdentityOptions returns the assume role with web identity options derived from the given provider context.

func BuildBluelinkTagFiltersForLookup 

func BuildBluelinkTagFiltersForLookup(
	input *provider.ResourceGetExternalStateInput,
) []rgtatypes.TagFilter

BuildBluelinkTagFiltersForLookup creates Resource Groups Tagging API tag filters for looking up a resource by its Bluelink provenance tags. This is used for fallback lookups when the external ID (ARN) is not available.

func CalculateIPv4SubnetCIDRBlocks 

func CalculateIPv4SubnetCIDRBlocks(vpcCIDRBlock string, numSubnets int) ([]string, error)

CalculateIPv4SubnetCIDRBlocks calculates the IPv4 CIDR blocks for a given number of subnets to be deployed to the VPC with the given CIDR block.

func CalculateIPv6SubnetCIDRBlocks 

func CalculateIPv6SubnetCIDRBlocks(
	vpcCIDRBlock string,
	numSubnets int,
	subnetPrefix int,
) ([]string, error)

CalculateIPv6SubnetCIDRBlocks calculates the IPv6 CIDR blocks for a given number of subnets to be deployed to the VPC with the given CIDR block.

func CertOptions 

func CertOptions(
	providerContext provider.Context,
	env map[string]string,
) ([]func(*config.LoadOptions) error, error)

CertOptions returns the cert options derived from the given provider context and environment variables.

func CreateTagBluelinkService 

func CreateTagBluelinkService(serviceName string) ec2types.Tag

CreateTagBluelinkService creates a tag that is used to identify the service that is used to allow access to VPC endpoints.

func CreateTagBlueprintInstanceName 

func CreateTagBlueprintInstanceName(instanceName string) ec2types.Tag

CreateTagBlueprintInstanceName creates a tag that is used to identify the blueprint instance associated with a networking resource created as a part of a link implementation.

func CreateTagBlueprintLinkID 

func CreateTagBlueprintLinkID(linkID string) ec2types.Tag

CreateTagBlueprintLinkID creates a tag that is used to identify the blueprint link that is used to allow access to VPC endpoints. 

func CreateTagFilterFlexVPCNameForLink(flexVPCName string) ec2types.Filter

CreateTagFilterFlexVPCNameForLink creates a filter that is used to identify the flex VPC that is used to allow access to VPC endpoints. This is to be used for components created as a part of a link implementation and is different from the tag used for the core flex VPC resources. 

func CreateTagFlexVPCNameForLink(flexVPCName string) ec2types.Tag

CreateTagFlexVPCNameForLink creates a filter that is used to identify the flex VPC that is used to allow access to VPC endpoints. This is to be used for components created as a part of a link implementation and is different from the tag used for the core flex VPC resources.

func CreateTagLinkSecurityGroup 

func CreateTagLinkSecurityGroup() ec2types.Tag

CreateTagLinkSecurityGroup creates a tag that is used to identify the security group that is used to allow access to VPC endpoints.

func CreateTagLinkVPCEndpoint 

func CreateTagLinkVPCEndpoint() ec2types.Tag

CreateTagLinkVPCEndpoint creates a tag that is used to identify the VPC endpoint that is used to allow access to VPC endpoints.

func CredentialOptions 

func CredentialOptions(
	providerContext provider.Context,
) []func(*config.LoadOptions) error

CredentialOptions returns the credential options derived from the given provider context.

func EC2MetadataServiceOptions 

func EC2MetadataServiceOptions(
	providerContext provider.Context,
	env map[string]string,
) []func(*config.LoadOptions) error

EC2MetadataServiceOptions returns the ec2 metadata service options derived from the given provider context and environment variables.

func ExtractARNFromCurrentState 

func ExtractARNFromCurrentState(
	currentStateSpecData *core.MappingNode,
	context string,
) (string, error)

ExtractARNFromCurrentState extracts the ARN from the current state spec data, this only works when the "arn" field is present as a a top-level field in provided spec data.

func ExtractARNFromResourceInfo 

func ExtractARNFromResourceInfo(resourceInfo *provider.ResourceInfo) (string, bool)

ExtractARNFromResourceInfo extracts the ARN from the resource info, this only works when the "arn" field is present as a a top-level field in provided spec data.

func FilterTags 

func FilterTags[T any](tags []T, getKey func(T) string, prefix string) []T

FilterTags is a generic function that filters out Bluelink provenance tags from a slice. It takes a slice of tags, a function to extract the key from each tag, and the prefix to filter. Returns a new slice containing only non-Bluelink tags.

func FilterTagsMap 

func FilterTagsMap(tags map[string]string, prefix string) map[string]string

FilterTagsMap filters out Bluelink provenance tags from a map. Returns a new map containing only non-Bluelink tags.

func GetBluelinkTagPrefix 

func GetBluelinkTagPrefix(taggingConfig *provider.TaggingConfig) string

GetBluelinkTagPrefix returns the tag prefix from tagging config, or the default if not set.

func GetEndpointFromProviderConfig 

func GetEndpointFromProviderConfig(
	providerContext provider.Context,
	service string,
	aliases []string,
) (*core.ScalarValue, bool)

GetEndpointFromProviderConfig returns the endpoint for a given service or one of its aliases.

func GetOtherLinkTagsFromSecurityGroup 

func GetOtherLinkTagsFromSecurityGroup(
	securityGroup *ec2types.SecurityGroup,
	excludeLinkID string,
) []ec2types.Tag

GetOtherLinkTagsFromSecurityGroup gets all link tags from a security group except for the specified link ID.

func GetOtherLinkTagsFromVPCEndpoint 

func GetOtherLinkTagsFromVPCEndpoint(
	endpoint *ec2types.VpcEndpoint,
	excludeLinkID string,
) []ec2types.Tag

GetOtherLinkTagsFromVPCEndpoint gets all link tags from a VPC endpoint except for the specified link ID.

func HTTPClientOptions 

func HTTPClientOptions(
	providerContext provider.Context,
) []func(*config.LoadOptions) error

HTTPClientOptions returns the http client options derived from the given provider context.

func HasIngressWithSourceSecurityGroupName 

func HasIngressWithSourceSecurityGroupName(
	securityGroup *ec2types.SecurityGroup,
	sourceSecurityGroupName string,
) bool

HasIngressWithSourceSecurityGroupName checks if the security group has an ingress rule with the given source security group name. 

func HasSecurityGroupTagForLink(
	securityGroup *ec2types.SecurityGroup,
	linkID string,
) bool

HasSecurityGroupTagForLink checks if the security group has a tag that associates it with the given link ID. 

func HasVPCEndpointTagForLink(
	endpoint *ec2types.VpcEndpoint,
	linkID string,
) bool

HasVPCEndpointTagForLink checks if the VPC endpoint has a tag that associates it with the given link ID.

func IsBluelinkTag 

func IsBluelinkTag(key, prefix string) bool

IsBluelinkTag checks if a tag key is a Bluelink provenance tag.

func MatchesEC2Tag 

func MatchesEC2Tag(
	expectedTag ec2types.Tag,
	currentTag ec2types.Tag,
) bool

MatchesEC2Tag checks if the current tag matches the expected tag for EC2 resources.

func MergeBluelinkTagsWithUserTags 

func MergeBluelinkTagsWithUserTags(
	input *provider.ResourceDeployInput,
	userTags map[string]string,
) map[string]string

MergeBluelinkTagsWithUserTags extracts Bluelink system tags from input, converts to AWS format, and merges with user-provided tags. User tags take precedence on key conflicts. Returns map[string]string suitable for AWS SDK calls.

func RegionOptions 

func RegionOptions(
	providerContext provider.Context,
	meta map[string]*core.MappingNode,
) []func(*config.LoadOptions) error

RegionOptions returns the region options derived from the given provider context.

func RetryConfigOptions 

func RetryConfigOptions(
	providerContext provider.Context,
	env map[string]string,
) []func(*config.LoadOptions) error

RetryConfigOptions returns the retry config options derived from the given provider context and environment variables.

func SharedEndpointOptions 

func SharedEndpointOptions(
	providerContext provider.Context,
) []func(*config.LoadOptions) error

SharedEndpointOptions returns the shared endpoint options derived from the given provider context.

func ToTagsMap 

func ToTagsMap(specTags *core.MappingNode) map[string]string

ToTagsMap converts a MappingNode to a map of tags. The MappingNode is expected to be an array of objects with "key" and "value" fields.

func VPCEndpointInSubnets 

func VPCEndpointInSubnets(
	endpoint *ec2types.VpcEndpoint,
	subnets []string,
) bool

VPCEndpointInSubnets checks if the VPC endpoint is in the given subnets.

func ZipInMemory 

func ZipInMemory(
	fileName string,
	content string,
) (string, error)

ZipInMemory creates a zip archive in memory that contains a single file with the given file name and content. This returns a base64 encoded string representation of the zip archive.

Types

type AWSConfigCreator 

type AWSConfigCreator func(
	ctx context.Context,
	providerContext provider.Context,
	meta map[string]*core.MappingNode,
	env map[string]string,
	loader AWSConfigLoader,
) (*aws.Config, error)

AWSConfigCreator is a function that produces an AWS config from the given provider context and environment variables.

type AWSConfigLoader 

type AWSConfigLoader interface {
	LoadDefaultConfig(
		ctx context.Context,
		optFns ...func(*config.LoadOptions) error,
	) (aws.Config, error)
}

AWSConfigLoader defines the interface for loading AWS configurations.

type AWSConfigStore 

type AWSConfigStore struct {
	// contains filtered or unexported fields
}

AWSConfigStore is a store for AWS config that is used to derive and cache AWS config on a per-session basis.

func NewAWSConfigStore 

func NewAWSConfigStore(
	env []string,
	createAWSConfig AWSConfigCreator,
	loader AWSConfigLoader,
	configStoreCacheKey CacheKeyCreator,
) *AWSConfigStore

NewAWSConfigStore creates a new store for deriving and caching AWS config.

func (*AWSConfigStore) FromProviderContext 

func (s *AWSConfigStore) FromProviderContext(
	ctx context.Context,
	providerContext provider.Context,
	meta map[string]*core.MappingNode,
) (*aws.Config, error)

FromProviderContext creates configuration to be used to create AWS SDK clients.

type CacheKeyCreator 

type CacheKeyCreator func(
	sessionID string,
	meta map[string]*core.MappingNode,
) string

CacheKeyCreator is a function that creates a cache key from the given session ID and metadata.

type DefaultAWSConfigLoader 

type DefaultAWSConfigLoader struct{}

DefaultAWSConfigLoader implements AWSConfigLoader using the AWS SDK.

func (*DefaultAWSConfigLoader) LoadDefaultConfig 

func (l *DefaultAWSConfigLoader) LoadDefaultConfig(
	ctx context.Context,
	optFns ...func(*config.LoadOptions) error,
) (aws.Config, error)

type Tag 

type Tag struct {
	Key   string
	Value string
}

Tag is an intermediary representation of a tag that is used across AWS services (The SDK provides a different type for each service). This is used to provide a consistent interface for the tag changes that should be converted to the upstream service's tag type.

type TagsDiffResult 

type TagsDiffResult[UpstreamTag any] struct {
	ToSet    []UpstreamTag
	ToRemove []string
}

TagsDiffResult is the result of the DiffTags function, it contains the tags that should be set and the tag keys that should be removed.

func DiffTags 

func DiffTags[UpstreamTag any](
	changes *provider.Changes,
	tagsRootPath string,
	transformTag func(tag *Tag) UpstreamTag,
) *TagsDiffResult[UpstreamTag]

DiffTags provides a general purpose utility to derive the difference between two sets of tags stored in a resource spec for the purpose of making calls to the upstream service to apply tag changes. There is a limitation in the `Changes` data that the plugin receives in that when the tags are stored in a list, it does not provide sufficient information on the key of the tags to be removed as it just reports an updated or removed index in the list. For this reason, resource implementations need to use the actual current and upcoming resource spec data to derive the tag changes so that the correct tags are removed, added and replaced.

tagsRootPath is the path to the tags field in the resource spec, the expected format is to use "$" to represent the root of the spec (e.g. "$.tags"). 

func DiffTagsWithBluelink[UpstreamTag any](
	changes *provider.Changes,
	deployInput *provider.ResourceDeployInput,
	tagsRootPath string,
	transformTag func(tag *Tag) UpstreamTag,
) *TagsDiffResult[UpstreamTag]

DiffTagsWithBluelink provides tag diffing that includes Bluelink system tags. It works like DiffTags but merges Bluelink tags with the desired user tags before computing the diff.

tagsRootPath is the path to the tags field in the resource spec, the expected format is to use "$" to represent the root of the spec (e.g. "$.tags").

type UniqueNameGenerator 

type UniqueNameGenerator func(input *provider.ResourceDeployInput) (string, error)

UniqueNameGenerator is a function type for generating unique names.

func DefaultUniqueNameGenerator 

func DefaultUniqueNameGenerator(maxLength int) UniqueNameGenerator

DefaultUniqueNameGenerator creates a unique name using blueprint instance name, resource name, and a nanoid with a configurable character limit. Uses input.InstanceName which provides meaningful, human-readable names.

func SQSQueueNameGenerator 

func SQSQueueNameGenerator(fifoQueue bool) UniqueNameGenerator

SQSQueueNameGenerator generates names for SQS queues (80 char limit) and accounts for FIFO queues, ensuring the name ends with '.fifo'.

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