Struct ProviderSchema 

pub struct ProviderSchema {
    pub provider_config: CtyType,
    pub resources: BTreeMap<String, CtyType>,
    pub data_sources: BTreeMap<String, CtyType>,
    pub resource_versions: BTreeMap<String, i64>,
}

── THE PROTOCOL DATA MODEL MOVED TO magma-provider-api ──────────── ProviderSchema, PlannedChange, Diag, Severity, ProviderError and is_retryable were defined here. They describe what a provider SAYS, not how it is reached, so they now live in the contract crate — which depends on magma-cty alone, so a native provider can implement the contract without dragging in tonic.

The edge had to point this way: magma-provider-api declares the Provider trait, and THIS crate implements it, so the types could not stay in the crate the trait crate would have had to depend on.

Re-exported unchanged, so every magma_plugin::provider::<T> path still resolves. Relocation, not redesign. A provider’s schema reduced to the implied cty types the apply codec needs: the provider-config type + each managed resource’s type.

Fields

provider_config: CtyType

resources: BTreeMap<String, CtyType>

data_sources: BTreeMap<String, CtyType>

Data-source implied types (data.<type>), needed to encode a ReadDataSource config + decode its result. Without these the apply engine cannot evaluate ${data.*} references (the rio-drive leak).

resource_versions: BTreeMap<String, i64>

Each managed resource type’s CURRENT schema version, as declared by the provider’s GetProviderSchema/GetSchema response (the Schema.version field sibling to the Schema.block that crate::schema::block_implied_type turns into resources’ implied types). The terraform plugin protocol requires UpgradeResourceState to run whenever a stored StateInstance’s schema_version is older than this — otherwise its raw attribute JSON (persisted under the OLD schema) gets decoded straight against the NEW implied type, which a schema change can silently misinterpret or fail to marshal. See ProviderConn::upgrade_resource_state + ProviderSchema::resource_version.

Implementations

impl ProviderSchema

pub fn resource(&self, type_name: &str) -> Option<&CtyType>

pub fn data_source(&self, type_name: &str) -> Option<&CtyType>

pub fn resource_version(&self, type_name: &str) -> i64

The provider’s CURRENT schema version for type_name. 0 both for a genuinely version-0 schema AND for a type the provider never declared — matching Terraform’s own convention that an un-versioned schema is version 0, so an unknown type never looks artificially “newer” than a stored instance and never triggers a spurious upgrade.

pub fn resource_version_u64(&self, type_name: &str) -> u64

Self::resource_version clamped into magma_types::StateInstance’s u64 schema_version field. Real provider schema versions are always small non-negative integers in practice; this only differs from the wire i64 for a malformed negative version (never observed from a real provider), which clamps to 0 rather than wrapping to a huge u64.

Trait Implementations

impl Clone for ProviderSchema

fn clone(&self) -> ProviderSchema

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ProviderSchema

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.