spanner library

Cloud Spanner — horizontally scalable relational databases and user-managed instance configurations.

Classes

AppConstant<T>
A value the Stack hands to application code as a static const in the generated AppExports file — known when synth runs, so the app compiles against it.
AppExports
Where synth writes the Dart file application code imports: the Stack's constants, as the static const members of <name>Constants, and a typed reader of its Terraform outputs, <name>Outputs.
AttributeRef<T>
Public for sealed pattern matching, but constructor is private — only TfRef.attribute() may construct instances.
DartDefineOutput
An output whose value is the client build's --dart-define file, registered with Stack.addDartDefineOutput.
Data
Base of every user-instantiable Terraform data block.
DataGoogleSpannerDatabase
Factory wrapper for google_spanner_database.
DataGoogleSpannerDatabaseIamPolicy
Factory wrapper for google_spanner_database_iam_policy.
DataGoogleSpannerInstance
Factory wrapper for google_spanner_instance.
DataGoogleSpannerInstanceIamPolicy
Factory wrapper for google_spanner_instance_iam_policy.
DataRef<T>
Public for sealed pattern matching, but constructor is private — only TfRef.data() may construct instances.
EnvironmentConstant
The AppConstant.fromEnvironment choice.
GcsBackend
terraform { backend "gcs" { ... } } configuration.
GoogleSpannerBackupSchedule
Factory wrapper for google_spanner_backup_schedule.
GoogleSpannerDatabase
Factory wrapper for google_spanner_database.
GoogleSpannerDatabaseIamBinding
Factory wrapper for google_spanner_database_iam_binding.
GoogleSpannerDatabaseIamMember
Factory wrapper for google_spanner_database_iam_member.
GoogleSpannerDatabaseIamPolicy
Factory wrapper for google_spanner_database_iam_policy.
GoogleSpannerInstance
Factory wrapper for google_spanner_instance.
GoogleSpannerInstanceConfig
Factory wrapper for google_spanner_instance_config.
GoogleSpannerInstanceIamBinding
Factory wrapper for google_spanner_instance_iam_binding.
GoogleSpannerInstanceIamMember
Factory wrapper for google_spanner_instance_iam_member.
GoogleSpannerInstanceIamPolicy
Factory wrapper for google_spanner_instance_iam_policy.
GoogleSpannerInstancePartition
Factory wrapper for google_spanner_instance_partition.
IgnoreAllChanges
IgnoreChanges.all.
IgnoreAttributes
IgnoreChanges.of.
IgnoreChanges
What ignore_changes covers: every attribute, or the listed ones.
InvalidDartDefineOutput
An output of Stack.addDartDefineOutput that cannot carry what it names: an output that is not registered, is sensitive or has no environment value, two outputs read from one variable, or no output at all.
InvalidLifecycle
A lifecycle block Terraform rejects: a data source (or one of its attributes) in replaceTriggeredBy, all inside IgnoreChanges.of, or a condition with an empty error message.
InvalidMoveTarget
A moved block whose to names no resource of the Stack.
InvalidTimeout
A negative timeouts duration.
LifecycleCondition
A precondition or postcondition block: Terraform fails the plan (LifecycleCondition.pre) or the apply (LifecycleCondition.post) with errorMessage when condition is false.
LifecycleOptions
lifecycle { ... } block on a resource.
LocalBackend
terraform { backend "local" { ... } } configuration.
MissingProvider
A block needs a provider configuration the Stack does not register: the provider its type implies (google for google_pubsub_topic), the one its provider meta-argument names, or one a module call passes on.
ModuleCall
A module "<localName>" { ... } call as a Dart value.
NoProviders
The Stack registers no provider, but declares resources or data sources.
ProviderConflict
Two provider registrations Terraform rejects together: two defaults of one name, a repeated alias, an alias that is not an identifier, or configurations of one name with different source / version constraints.
RefConstant<T>
The AppConstant.ref choice.
ReplaceTrigger
What lifecycle.replaceTriggeredBy lists: a resource of the Stack or an attribute getter of one. Resource and TfRef implement it; synth reports a data source or a data-source attribute as an InvalidLifecycle.
Resource
Base of every user-instantiable Terraform resource.
ResourceRef
Public for sealed pattern matching, but constructor is private — only TfRef.resource() may construct instances.
S3Backend
terraform { backend "s3" { ... } } configuration.
Sensitive<T>
What an argument Terraform marks sensitive takes: a variable, an expression or an attribute getter — a value Terraform resolves, never a Dart literal that would be written into main.tf.json.
SensitiveLiteral
A sensitive field is set to a literal, which would write the secret in plain text into main.tf.json.
SpannerBackupScheduleBackupSpec
Exactly one backup-chain style for a GoogleSpannerBackupSchedule.
SpannerBackupScheduleCronSpec
Typed helper for the spec.cron_spec block of google_spanner_backup_schedule (derived from provider schema).
SpannerBackupScheduleEncryptionConfig
Typed helper for the encryption_config block of google_spanner_backup_schedule (derived from provider schema).
SpannerBackupScheduleFullBackupSpec
full_backup_spec — schedule creates only full backups.
SpannerBackupScheduleIncrementalBackupSpec
incremental_backup_spec — schedule creates incremental backup chains.
SpannerBackupScheduleKmsKeyName
At most one of kms_key_name, kms_key_names on the encryption_config block of google_spanner_backup_schedule: the provider rejects more than one, so each variant sets one of them and a null choice sets none.
SpannerBackupScheduleKmsKeyNameChoice
The SpannerBackupScheduleKmsKeyName.kmsKeyName choice: sets kms_key_name.
SpannerBackupScheduleKmsKeyNameKmsKeyNames
The SpannerBackupScheduleKmsKeyName.kmsKeyNames choice: sets kms_key_names.
SpannerBackupScheduleSpec
Typed helper for the spec block of google_spanner_backup_schedule (derived from provider schema).
SpannerDatabaseEncryptionConfig
Exactly one of kms_key_name, kms_key_names on the encryption_config block of google_spanner_database: the provider rejects none and more than one, so each variant sets one of them.
SpannerDatabaseEncryptionConfigKmsKeyName
The SpannerDatabaseEncryptionConfig.kmsKeyName choice: sets kms_key_name.
SpannerDatabaseEncryptionConfigKmsKeyNames
The SpannerDatabaseEncryptionConfig.kmsKeyNames choice: sets kms_key_names.
SpannerDatabaseIamBindingCondition
Typed helper for the condition block of google_spanner_database_iam_binding (derived from provider schema).
SpannerDatabaseIamMemberCondition
Typed helper for the condition block of google_spanner_database_iam_member (derived from provider schema).
SpannerInstanceAsymmetricAutoscalingOptions
Typed helper for the autoscaling_config.asymmetric_autoscaling_options block of google_spanner_instance (derived from provider schema).
SpannerInstanceAutoscalingConfig
Typed helper for the autoscaling_config block of google_spanner_instance (derived from provider schema).
SpannerInstanceAutoscalingLimits
Typed helper for the autoscaling_config.autoscaling_limits block of google_spanner_instance (derived from provider schema).
SpannerInstanceAutoscalingLimitsMax
Exactly one of max_nodes, max_processing_units on the autoscaling_config.asymmetric_autoscaling_options.overrides.autoscaling_limits block of google_spanner_instance: the provider rejects none and more than one, so each variant sets one of them.
SpannerInstanceAutoscalingLimitsMaxNodes
The SpannerInstanceAutoscalingLimitsMax.maxNodes choice: sets max_nodes.
SpannerInstanceAutoscalingLimitsMaxProcessingUnits
The SpannerInstanceAutoscalingLimitsMax.maxProcessingUnits choice: sets max_processing_units.
SpannerInstanceAutoscalingLimitsMin
Exactly one of min_nodes, min_processing_units on the autoscaling_config.asymmetric_autoscaling_options.overrides.autoscaling_limits block of google_spanner_instance: the provider rejects none and more than one, so each variant sets one of them.
SpannerInstanceAutoscalingLimitsMinNodes
The SpannerInstanceAutoscalingLimitsMin.minNodes choice: sets min_nodes.
SpannerInstanceAutoscalingLimitsMinProcessingUnits
The SpannerInstanceAutoscalingLimitsMin.minProcessingUnits choice: sets min_processing_units.
SpannerInstanceAutoscalingTargets
Typed helper for the autoscaling_config.autoscaling_targets block of google_spanner_instance (derived from provider schema).
SpannerInstanceConfigReplicas
Typed helper for the replicas block of google_spanner_instance_config (derived from provider schema).
SpannerInstanceIamBindingCondition
Typed helper for the condition block of google_spanner_instance_iam_binding (derived from provider schema).
SpannerInstanceIamMemberCondition
Typed helper for the condition block of google_spanner_instance_iam_member (derived from provider schema).
SpannerInstanceMax
Exactly one of max_processing_units, max_nodes on the autoscaling_config.autoscaling_limits block of google_spanner_instance: the provider rejects none and more than one, so each variant sets one of them.
SpannerInstanceMaxNodes
The SpannerInstanceMax.maxNodes choice: sets max_nodes.
SpannerInstanceMaxProcessingUnits
The SpannerInstanceMax.maxProcessingUnits choice: sets max_processing_units.
SpannerInstanceMin
Exactly one of min_processing_units, min_nodes on the autoscaling_config.autoscaling_limits block of google_spanner_instance: the provider rejects none and more than one, so each variant sets one of them.
SpannerInstanceMinNodes
The SpannerInstanceMin.minNodes choice: sets min_nodes.
SpannerInstanceMinProcessingUnits
The SpannerInstanceMin.minProcessingUnits choice: sets min_processing_units.
SpannerInstanceOverrides
Typed helper for the autoscaling_config.asymmetric_autoscaling_options.overrides block of google_spanner_instance (derived from provider schema).
SpannerInstanceOverridesAutoscalingLimits
Typed helper for the autoscaling_config.asymmetric_autoscaling_options.overrides.autoscaling_limits block of google_spanner_instance (derived from provider schema).
SpannerInstancePartitionAutoscalingConfig
Typed helper for the autoscaling_config block of google_spanner_instance_partition (derived from provider schema).
SpannerInstancePartitionAutoscalingLimits
Typed helper for the autoscaling_config.autoscaling_limits block of google_spanner_instance_partition (derived from provider schema).
SpannerInstancePartitionAutoscalingTargets
Typed helper for the autoscaling_config.autoscaling_targets block of google_spanner_instance_partition (derived from provider schema).
SpannerInstancePartitionCapacity
Exactly one of node_count, processing_units, autoscaling_config on google_spanner_instance_partition: the provider rejects none and more than one, so each variant sets one of them.
SpannerInstancePartitionCapacityAutoscalingConfig
The SpannerInstancePartitionCapacity.autoscalingConfig choice: sets autoscaling_config.
SpannerInstancePartitionCapacityNodeCount
The SpannerInstancePartitionCapacity.nodeCount choice: sets node_count.
SpannerInstancePartitionCapacityProcessingUnits
The SpannerInstancePartitionCapacity.processingUnits choice: sets processing_units.
SpannerInstancePartitionMaxCapacity
Exactly one of max_processing_units, max_nodes on the autoscaling_config.autoscaling_limits block of google_spanner_instance_partition: the provider rejects none and more than one, so each variant sets one of them.
SpannerInstancePartitionMaxCapacityMaxNodes
The SpannerInstancePartitionMaxCapacity.maxNodes choice: sets max_nodes.
SpannerInstancePartitionMaxCapacityMaxProcessingUnits
The SpannerInstancePartitionMaxCapacity.maxProcessingUnits choice: sets max_processing_units.
SpannerInstancePartitionMinCapacity
Exactly one of min_processing_units, min_nodes on the autoscaling_config.autoscaling_limits block of google_spanner_instance_partition: the provider rejects none and more than one, so each variant sets one of them.
SpannerInstancePartitionMinCapacityMinNodes
The SpannerInstancePartitionMinCapacity.minNodes choice: sets min_nodes.
SpannerInstancePartitionMinCapacityMinProcessingUnits
The SpannerInstancePartitionMinCapacity.minProcessingUnits choice: sets min_processing_units.
SpannerInstanceReplicaSelection
Typed helper for the autoscaling_config.asymmetric_autoscaling_options.replica_selection block of google_spanner_instance (derived from provider schema).
Stack
User-extended IaC composition root.
StackBackend
Lightweight backend hook. Core ships GcsBackend, S3Backend, and LocalBackend; anything else implements this interface in the caller. The Stack only stores the value and exposes a discriminator for synth's terraform { backend ... } emitter.
StackProvider
Coordination interface between Stack (in this package) and concrete providers (e.g. GoogleProvider in terradart_google). Concrete providers implement every getter using their baked-in constants from Stage 2 codegen.
SynthIssue
One reason a Stack cannot be synthesized.
SynthResult
Bundle returned by StackSynth.synth.
TfAddressed
Anything that exposes a Terraform address, e.g. google_pubsub_topic.orders.
TfArg<T>
A Terraform argument: a Dart-side literal, a reference to another block's attribute (TfRef), a variable or a raw expression.
TfArgExpression<T>
A raw Terraform expression — the tf.json template string, verbatim.
TfArgLiteral<T>
TfArgVariable<T>
TfCollectionType
list(...), set(...) or map(...).
TfMoved
One moved { from = ... to = ... } block: the state object at from now belongs to the resource at to, so a rename does not become a destroy-and-create.
TfObjectType
object({ ... }).
TfOptionalType
optional(<type>[, <default>]).
TfOutput<T>
An output "<name>" { value = ... } block, registered with Stack.addOutput.
TfPrimitiveType
string, number, bool or any.
TfRef<T>
A Terraform-side reference: an attribute of a resource (AttributeRef) or a data source (DataRef), or a whole resource (ResourceRef).
TfTimeouts
timeouts { ... } on a resource or data source: how long Terraform waits for each operation before giving up.
TfTupleType
tuple([...]).
TfType
A Terraform type constraint: string, list(number), object({ name = string }).
TfVariable
One variable "<name>" { ... } declaration.
UndeclaredVariable
A TfArg.variable or var.<name> in an expression names a variable the Stack does not declare.
UnregisteredReference
A block references another block that was never registered on the Stack: built, but not passed to add(...) / addModule(...).
UnresolvableConstant
An AppConstant.ref whose value is not known at synth: the attribute is not set to a literal, is sensitive, does not match the constant's type, or belongs to a block that is not registered.
ValueConstant<T>
The AppConstant.value choice.

Enums

ResourceKind
Whether a Stack entry is a resource block or a data block in Terraform JSON.

Extension Types

OutputEnvironment
The environment Stack.outputEnvironment returns: each variable and its value, in registration order.
RefTo
A reference to a resource of type R, for an argument that names another resource (network, vpc_id, role_arn, ...).
SpannerBackupScheduleEncryptionType
encryption_type — derived from the provider schema description.
SpannerDatabaseDialect
database_dialect — GoogleSQL vs PostgreSQL interface.
SpannerInstanceConfigReplicasType
type — derived from the provider schema description.
SpannerInstanceDefaultBackupScheduleType
Spanner Instance Default Backup Schedule enum for default_backup_schedule_type.
SpannerInstanceEdition
Spanner Instance enum for edition.
SpannerInstancePartitionState
Spanner Instance Partition enum for state.
SpannerInstanceState
Spanner Instance enum for state.
SpannerInstanceType
Spanner Instance enum for instance_type.

Extensions

RefToList on TfArg<List<RefTo<R>>>
A list-valued reference argument (security_group_ids, subnet_ids): a literal list of RefTos, or one value that is the whole list (TfArg.variable('subnet_ids'), TfArg.expression(...)).
TerraformDurationExt on Duration
Converts a Dart Duration into a Terraform duration string ("604800s").

Constants

terradartManifestVariable → const String
The environment variable the terradart command sets to the file runStack and runEnvironments describe what they wrote in.

Functions

runEnvironments<E extends Enum>(List<String> args, List<E> environments, Stack build(E env), {String dir(E env)?, String? workspace(E env)?, List<String> backendConfig(E env)?, E? defaultEnv}) → Future<void>
The entry point of a project with one Stack per environment. The environments are the members of an enum of the project's own — any names, each carrying its values — so the Stack takes a typed env and derives everything per environment from it, its backend included:
runStack(List<String> args, Stack build(), {String out = 'tf-out'}) → Future<void>
The entry point of a project with one Stack: writes it to out.

Exceptions / Errors

DuplicateModuleError
A ModuleCall registered twice under one name.
DuplicateResourceError
Thrown by Stack.add when an entry with the same (kind, terraformType, localName) triple is registered twice.
SynthException
Thrown by Stack.synth() and Stack.writeTo() when the Stack has one or more SynthIssues. Nothing is written.