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Add HookAccessor types for accessing mutable/nonmutable hook calling in a generic way

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This commit is contained in:
Matthias Beyer 2016-02-22 19:23:49 +01:00
parent c9bca51273
commit 1c40be78a9
1 changed files with 28 additions and 9 deletions
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37
libimagstore/src/hook.rs
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@ -3,6 +3,7 @@ use std::fmt::Debug;
use toml::Value; use toml::Value;
use self::error::HookError; use self::error::HookError;
use store::FileLockEntry;
pub type HookResult<T> = Result<T, HookError>; pub type HookResult<T> = Result<T, HookError>;
@ -10,12 +11,30 @@ pub trait Configureable {
fn set_config(&mut self, cfg: Value); fn set_config(&mut self, cfg: Value);
} }
pub trait Hook : Configureable + Debug { pub trait MutableHookDataAccessor : Send + Sync {
fn access_mut(&self, &mut FileLockEntry) -> HookResult<()>;
}
pub trait NonMutableHookDataAccessor : Send + Sync {
fn access(&self, &FileLockEntry) -> HookResult<()>;
}
pub enum HookDataAccessor {
MutableAccess(Box<MutableHookDataAccessor>),
NonMutableAccess(Box<NonMutableHookDataAccessor>),
}
pub trait HookDataAccessorProvider {
fn accessor(&self) -> Box<HookDataAccessor>;
}
pub trait Hook : Configureable + Debug + Send + Sync {
} }
pub mod read { pub mod read {
use storeid::StoreId; use storeid::StoreId;
use store::FileLockEntry; use store::FileLockEntry;
use super::HookDataAccessorProvider;
use super::HookResult; use super::HookResult;
use super::Hook; use super::Hook;
@ -23,8 +42,7 @@ pub mod read {
fn pre_read(&self, &StoreId) -> HookResult<()>; fn pre_read(&self, &StoreId) -> HookResult<()>;
} }
pub trait PostReadHook : Hook { pub trait PostReadHook : Hook + HookDataAccessorProvider {
fn post_read<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
} }
} }
@ -32,6 +50,7 @@ pub mod read {
pub mod create { pub mod create {
use storeid::StoreId; use storeid::StoreId;
use store::FileLockEntry; use store::FileLockEntry;
use super::HookDataAccessorProvider;
use super::HookResult; use super::HookResult;
use super::Hook; use super::Hook;
@ -39,8 +58,7 @@ pub mod create {
fn pre_create(&self, &StoreId) -> HookResult<()>; fn pre_create(&self, &StoreId) -> HookResult<()>;
} }
pub trait PostCreateHook : Hook { pub trait PostCreateHook : Hook + HookDataAccessorProvider {
fn post_create<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
} }
} }
@ -48,6 +66,7 @@ pub mod create {
pub mod retrieve { pub mod retrieve {
use storeid::StoreId; use storeid::StoreId;
use store::FileLockEntry; use store::FileLockEntry;
use super::HookDataAccessorProvider;
use super::HookResult; use super::HookResult;
use super::Hook; use super::Hook;
@ -55,13 +74,13 @@ pub mod retrieve {
fn pre_retrieve(&self, &StoreId) -> HookResult<()>; fn pre_retrieve(&self, &StoreId) -> HookResult<()>;
} }
pub trait PostRetrieveHook : Hook { pub trait PostRetrieveHook : Hook + HookDataAccessorProvider {
fn post_retrieve<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
} }
} }
pub mod update { pub mod update {
use store::FileLockEntry; use store::FileLockEntry;
use super::HookDataAccessorProvider;
use super::HookResult; use super::HookResult;
use super::Hook; use super::Hook;
@ -69,14 +88,14 @@ pub mod update {
fn pre_update(&self, &FileLockEntry) -> HookResult<()>; fn pre_update(&self, &FileLockEntry) -> HookResult<()>;
} }
pub trait PostUpdateHook : Hook { pub trait PostUpdateHook : Hook + HookDataAccessorProvider {
fn post_update(&self, &FileLockEntry) -> HookResult<()>;
} }
} }
pub mod delete { pub mod delete {
use storeid::StoreId; use storeid::StoreId;
use store::FileLockEntry; use store::FileLockEntry;
use super::HookDataAccessorProvider;
use super::HookResult; use super::HookResult;
use super::Hook; use super::Hook;