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// This file is part of the tf-provider project
//
// Copyright (C) ANEO, 2024-2024. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License")
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! [`Resource`] module
use crate::attribute_path::AttributePath;
use crate::diagnostics::Diagnostics;
use crate::raw::RawValue;
use crate::schema::Schema;
use crate::utils::OptionFactor;
use async_trait::async_trait;
use serde::{Deserialize, Serialize};
/// Trait for implementing a resource with automatic serialization/deserialization
///
/// See also: [`DynamicResource`]
#[async_trait]
pub trait Resource: Send + Sync {
/// State of the resource
///
/// The state will be automatically serialized/deserialized at the border of the request.
type State<'a>: Serialize + Deserialize<'a> + Send;
/// Private state of the resource
///
/// The private state will be automatically serialized/deserialized at the border of the request.
type PrivateState<'a>: Serialize + Deserialize<'a> + Send;
/// State of the provider metadata
///
/// The state will be automatically serialized/deserialized at the border of the request.
type ProviderMetaState<'a>: Serialize + Deserialize<'a> + Send;
/// Get the schema of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured when getting back the schema
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
fn schema(&self, diags: &mut Diagnostics) -> Option<Schema>;
/// Validate the configuration of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during validation
/// * `config` - State as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn validate<'a>(&self, diags: &mut Diagnostics, config: Self::State<'a>) -> Option<()> {
_ = diags;
_ = config;
Some(())
}
/// Read the new state of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the read
/// * `state` - State as stored in the Terraform state
/// * `private_state` - Private state as stored in the Terraform state
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// Return must be [`None`] if the resource has been destroyed externally.
/// Return must be [`Some`] if the resource is still there, even if there was errors while reading the resource.
async fn read<'a>(
&self,
diags: &mut Diagnostics,
state: Self::State<'a>,
private_state: Self::PrivateState<'a>,
provider_meta_state: Self::ProviderMetaState<'a>,
) -> Option<(Self::State<'a>, Self::PrivateState<'a>)>;
/// Plan the creation of a new resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the plan
/// * `proposed_state` - State proposed by Terraform
/// * `config_state` - State as declared in the Terraform file
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn plan_create<'a>(
&self,
diags: &mut Diagnostics,
proposed_state: Self::State<'a>,
config_state: Self::State<'a>,
provider_meta_state: Self::ProviderMetaState<'a>,
) -> Option<(Self::State<'a>, Self::PrivateState<'a>)>;
/// Plan the changes on the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the plan
/// * `prior_state` - State as stored in the Terraform state
/// * `proposed_state` - State proposed by Terraform
/// * `config_state` - State as declared in the Terraform file
/// * `private_state` - Private state as stored in the Terraform state
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn plan_update<'a>(
&self,
diags: &mut Diagnostics,
prior_state: Self::State<'a>,
proposed_state: Self::State<'a>,
config_state: Self::State<'a>,
prior_private_state: Self::PrivateState<'a>,
provider_meta_state: Self::ProviderMetaState<'a>,
) -> Option<(Self::State<'a>, Self::PrivateState<'a>, Vec<AttributePath>)>;
/// Plan the destruction of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the plan
/// * `prior_state` - State as stored in the Terraform state
/// * `prior_private_state` - Private state as stored in the Terraform state
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn plan_destroy<'a>(
&self,
diags: &mut Diagnostics,
prior_state: Self::State<'a>,
prior_private_state: Self::PrivateState<'a>,
provider_meta_state: Self::ProviderMetaState<'a>,
) -> Option<Self::PrivateState<'a>>;
/// Create a new resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the creation
/// * `planned_state` - State proposed by the provider upon plan
/// * `config_state` - State as declared in the Terraform file
/// * `planned_private_state` - Private state proposed by the provider upon plan
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
/// Return must be [`Some`] if the resource was created, even if there was errors while creating the resource.
async fn create<'a>(
&self,
diags: &mut Diagnostics,
planned_state: Self::State<'a>,
config_state: Self::State<'a>,
planned_private_state: Self::PrivateState<'a>,
provider_meta_state: Self::ProviderMetaState<'a>,
) -> Option<(Self::State<'a>, Self::PrivateState<'a>)>;
/// Apply the changes on the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the update
/// * `prior_state` - State as stored in the Terraform state
/// * `planned_state` - State proposed by the provider upon plan
/// * `config_state` - State as declared in the Terraform file
/// * `planned_private_state` - Private state proposed by the provider upon plan
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// If the return is [`None`], an ad-hoc error is added to diagnostics, and the resource state is kept unchanged.
/// Return must be [`Some`] if the resource was updated, even if there was errors while updated the resource.
async fn update<'a>(
&self,
diags: &mut Diagnostics,
prior_state: Self::State<'a>,
planned_state: Self::State<'a>,
config_state: Self::State<'a>,
planned_private_state: Self::PrivateState<'a>,
provider_meta_state: Self::ProviderMetaState<'a>,
) -> Option<(Self::State<'a>, Self::PrivateState<'a>)>;
/// Destroy the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the destruction
/// * `prior_state` - State as stored in the Terraform state
/// * `planned_private_state` - Private state proposed by the provider upon plan
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn destroy<'a>(
&self,
diags: &mut Diagnostics,
prior_state: Self::State<'a>,
planned_private_state: Self::PrivateState<'a>,
provider_meta_state: Self::ProviderMetaState<'a>,
) -> Option<()>;
/// Import an existing resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the import
/// * `id` - Opaque string that the provider can use to identify the actual resource to import
///
/// # Remarks
///
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
/// Return must be [`Some`] if the resource was imported, even if there was errors while importing the resource.
async fn import<'a>(
&self,
diags: &mut Diagnostics,
id: String,
) -> Option<(Self::State<'a>, Self::PrivateState<'a>)> {
_ = id;
diags.root_error_short("Import is not supported");
None
}
/// Upgrade the resource from a prior version of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the import
/// * `version` - Prior version of the resource to upgrade as recorded in Terraform state
/// * `prior_state` - Prior state of the resource to upgrade as recorded in Terraform state
///
/// # Remarks
///
/// If the return is [`None`], an ad-hoc error is added to diagnostics, and the resource state is kept unchanged.
/// Return must be [`Some`] if the resource was upgraded, even if there was errors while upgraded the resource.
///
/// Because the schema of the resource might have changed,
/// the prior state must be deserialized explicitely.
async fn upgrade<'a>(
&self,
diags: &mut Diagnostics,
version: i64,
prior_state: RawValue,
) -> Option<Self::State<'a>> {
_ = version;
_ = prior_state;
diags.root_error_short("Upgrade is not supported");
None
}
}
/// Trait for implementing a resource *without* automatic serialization/deserialization
///
/// See also: [`Resource`]
#[async_trait]
pub trait DynamicResource: Send + Sync {
/// Get the schema of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured when getting back the schema
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
fn schema(&self, diags: &mut Diagnostics) -> Option<Schema>;
/// Validate the configuration of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during validation
/// * `config` - State as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn validate(&self, diags: &mut Diagnostics, config: RawValue) -> Option<()> {
_ = diags;
_ = config;
Some(())
}
/// Read the new state of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the read
/// * `state` - State as stored in the Terraform state
/// * `private_state` - Private state as stored in the Terraform state
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// Return must be [`None`] if the resource has been destroyed externally.
/// Return must be [`Some`] if the resource is still there, even if there was errors while reading the resource.
async fn read(
&self,
diags: &mut Diagnostics,
state: RawValue,
private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>)>;
/// Plan the creation of a new resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the plan
/// * `proposed_state` - State proposed by Terraform
/// * `config_state` - State as declared in the Terraform file
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn plan_create(
&self,
diags: &mut Diagnostics,
proposed_state: RawValue,
config_state: RawValue,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>)>;
/// Plan the changes on the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the plan
/// * `prior_state` - State as stored in the Terraform state
/// * `proposed_state` - State proposed by Terraform
/// * `config_state` - State as declared in the Terraform file
/// * `private_state` - Private state as stored in the Terraform state
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn plan_update(
&self,
diags: &mut Diagnostics,
prior_state: RawValue,
proposed_state: RawValue,
config_state: RawValue,
prior_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>, Vec<AttributePath>)>;
/// Plan the destruction of the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the plan
/// * `prior_state` - State as stored in the Terraform state
/// * `prior_private_state` - Private state as stored in the Terraform state
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn plan_destroy(
&self,
diags: &mut Diagnostics,
prior_state: RawValue,
prior_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<Vec<u8>>;
/// Create a new resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the creation
/// * `planned_state` - State proposed by the provider upon plan
/// * `config_state` - State as declared in the Terraform file
/// * `planned_private_state` - Private state proposed by the provider upon plan
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
/// Return must be [`Some`] if the resource was created, even if there was errors while creating the resource.
async fn create(
&self,
diags: &mut Diagnostics,
planned_state: RawValue,
config_state: RawValue,
planned_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>)>;
/// Apply the changes on the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the update
/// * `prior_state` - State as stored in the Terraform state
/// * `planned_state` - State proposed by the provider upon plan
/// * `config_state` - State as declared in the Terraform file
/// * `planned_private_state` - Private state proposed by the provider upon plan
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// If the return is [`None`], an ad-hoc error is added to diagnostics, and the resource state is kept unchanged.
/// Return must be [`Some`] if the resource was updated, even if there was errors while updated the resource.
async fn update(
&self,
diags: &mut Diagnostics,
prior_state: RawValue,
planned_state: RawValue,
config_state: RawValue,
planned_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>)>;
/// Destroy the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the destruction
/// * `prior_state` - State as stored in the Terraform state
/// * `planned_private_state` - Private state proposed by the provider upon plan
/// * `provider_meta_state` - State of the provider metadata as declared in the Terraform file
///
/// # Remarks
///
/// The return is ignored if there is an error in diagnostics.
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
async fn destroy(
&self,
diags: &mut Diagnostics,
prior_state: RawValue,
planned_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<()>;
/// Import an existing resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the import
/// * `id` - Opaque string that the provider can use to identify the actual resource to import
///
/// # Remarks
///
/// If the return is [`None`], an ad-hoc error is added to diagnostics.
/// Return must be [`Some`] if the resource was imported, even if there was errors while importing the resource.
async fn import(&self, diags: &mut Diagnostics, id: String) -> Option<(RawValue, Vec<u8>)> {
_ = id;
diags.root_error_short("Import is not supported");
None
}
/// Upgrade the resource
///
/// # Arguments
///
/// * `diags` - Diagnostics to record warnings and errors that occured during the import
/// * `version` - Prior version of the resource to upgrade as recorded in Terraform state
/// * `prior_state` - Prior state of the resource to upgrade as recorded in Terraform state
///
/// # Remarks
///
/// If the return is [`None`], an ad-hoc error is added to diagnostics, and the resource state is kept unchanged.
/// Return must be [`Some`] if the resource was upgraded, even if there was errors while upgraded the resource.
async fn upgrade(
&self,
diags: &mut Diagnostics,
version: i64,
prior_state: RawValue,
) -> Option<RawValue> {
_ = version;
_ = prior_state;
diags.root_error_short("Upgrade is not supported");
None
}
}
#[async_trait]
impl<T: Resource> DynamicResource for T {
/// Get the schema of the resource
fn schema(&self, diags: &mut Diagnostics) -> Option<Schema> {
<T as Resource>::schema(self, diags)
}
/// Validate the configuration of the resource
async fn validate(&self, diags: &mut Diagnostics, config: RawValue) -> Option<()> {
let config = config.deserialize(diags)?;
<T as Resource>::validate(self, diags, config).await
}
/// Read the new state of the resource
async fn read(
&self,
diags: &mut Diagnostics,
state: RawValue,
private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>)> {
let private_state = RawValue::MessagePack(private_state);
let (state, private_state, provider_meta_state) = (
state.deserialize(diags),
private_state.deserialize(diags),
provider_meta_state.deserialize(diags),
)
.factor()?;
let (state, private_state) =
<T as Resource>::read(self, diags, state, private_state, provider_meta_state).await?;
(
RawValue::serialize(diags, &state),
RawValue::serialize_vec(diags, &private_state),
)
.factor()
}
/// Plan the creation of a new resource
async fn plan_create(
&self,
diags: &mut Diagnostics,
proposed_state: RawValue,
config_state: RawValue,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>)> {
let (proposed_state, config_state, provider_meta_state) = (
proposed_state.deserialize(diags),
config_state.deserialize(diags),
provider_meta_state.deserialize(diags),
)
.factor()?;
let (state, private_state) = <T as Resource>::plan_create(
self,
diags,
proposed_state,
config_state,
provider_meta_state,
)
.await?;
(
RawValue::serialize(diags, &state),
RawValue::serialize_vec(diags, &private_state),
)
.factor()
}
/// Plan the changes on the resource
async fn plan_update(
&self,
diags: &mut Diagnostics,
prior_state: RawValue,
proposed_state: RawValue,
config_state: RawValue,
prior_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>, Vec<AttributePath>)> {
let prior_private_state = RawValue::MessagePack(prior_private_state);
let (prior_state, proposed_state, config_state, prior_private_state, provider_meta_state) =
(
prior_state.deserialize(diags),
proposed_state.deserialize(diags),
config_state.deserialize(diags),
prior_private_state.deserialize(diags),
provider_meta_state.deserialize(diags),
)
.factor()?;
let (state, private_state, destroy_triggers) = <T as Resource>::plan_update(
self,
diags,
prior_state,
proposed_state,
config_state,
prior_private_state,
provider_meta_state,
)
.await?;
(
RawValue::serialize(diags, &state),
RawValue::serialize_vec(diags, &private_state),
Some(destroy_triggers),
)
.factor()
}
/// Plan the destruction of the resource
async fn plan_destroy(
&self,
diags: &mut Diagnostics,
prior_state: RawValue,
prior_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<Vec<u8>> {
let prior_private_state = RawValue::MessagePack(prior_private_state);
let (prior_state, prior_private_state, provider_meta_state) = (
prior_state.deserialize(diags),
prior_private_state.deserialize(diags),
provider_meta_state.deserialize(diags),
)
.factor()?;
let private_state = <T as Resource>::plan_destroy(
self,
diags,
prior_state,
prior_private_state,
provider_meta_state,
)
.await?;
RawValue::serialize_vec(diags, &private_state)
}
/// Create a new resource
async fn create(
&self,
diags: &mut Diagnostics,
planned_state: RawValue,
config_state: RawValue,
planned_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>)> {
let planned_private_state = RawValue::MessagePack(planned_private_state);
let (planned_state, config_state, planned_private_state, provider_meta_state) = (
planned_state.deserialize(diags),
config_state.deserialize(diags),
planned_private_state.deserialize(diags),
provider_meta_state.deserialize(diags),
)
.factor()?;
let (state, private_state) = <T as Resource>::create(
self,
diags,
planned_state,
config_state,
planned_private_state,
provider_meta_state,
)
.await?;
(
RawValue::serialize(diags, &state),
RawValue::serialize_vec(diags, &private_state),
)
.factor()
}
/// Apply the changes on the resource
async fn update(
&self,
diags: &mut Diagnostics,
prior_state: RawValue,
planned_state: RawValue,
config_state: RawValue,
planned_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<(RawValue, Vec<u8>)> {
let planned_private_state = RawValue::MessagePack(planned_private_state);
let (prior_state, planned_state, config_state, planned_private_state, provider_meta_state) =
(
prior_state.deserialize(diags),
planned_state.deserialize(diags),
config_state.deserialize(diags),
planned_private_state.deserialize(diags),
provider_meta_state.deserialize(diags),
)
.factor()?;
let (state, private_state) = <T as Resource>::update(
self,
diags,
prior_state,
planned_state,
config_state,
planned_private_state,
provider_meta_state,
)
.await?;
(
RawValue::serialize(diags, &state),
RawValue::serialize_vec(diags, &private_state),
)
.factor()
}
/// Destroy the resource
async fn destroy(
&self,
diags: &mut Diagnostics,
prior_state: RawValue,
planned_private_state: Vec<u8>,
provider_meta_state: RawValue,
) -> Option<()> {
let planned_private_state = RawValue::MessagePack(planned_private_state);
let (prior_state, planned_private_state, provider_meta_state) = (
prior_state.deserialize(diags),
planned_private_state.deserialize(diags),
provider_meta_state.deserialize(diags),
)
.factor()?;
<T as Resource>::destroy(
self,
diags,
prior_state,
planned_private_state,
provider_meta_state,
)
.await
}
/// Import an existing resource
async fn import(&self, diags: &mut Diagnostics, id: String) -> Option<(RawValue, Vec<u8>)> {
let (state, private_state) = <T as Resource>::import(self, diags, id).await?;
(
RawValue::serialize(diags, &state),
RawValue::serialize_vec(diags, &private_state),
)
.factor()
}
/// Upgrade the resource
async fn upgrade(
&self,
diags: &mut Diagnostics,
version: i64,
prior_state: RawValue,
) -> Option<RawValue> {
let state = <T as Resource>::upgrade(self, diags, version, prior_state).await?;
RawValue::serialize(diags, &state)
}
}
impl<T: Resource + 'static> From<T> for Box<dyn DynamicResource> {
fn from(value: T) -> Self {
Box::new(value)
}
}