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Make hooks configurable

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This introduces the Configurable trait and abstracts the
dependency-traits for each trait over a generic "Hook" trait, which
requires Configurable and Debug to be implemented, but has no own
functions.

Configuring is done _without_ the Runtime object, so we can be sure that
the hooks do not have access to the store object.
This commit is contained in:
Matthias Beyer 2016-02-17 16:33:41 +01:00
parent d9a4512821
commit d7733aa13a
1 changed files with 26 additions and 20 deletions
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46
libimagstore/src/hook.rs
View file

@ -1,84 +1,90 @@
use std::fmt::Debug;
use toml::Value;
use self::error::HookError;
pub type HookResult<T> = Result<T, HookError>;
pub mod read {
use std::fmt::Debug;
pub trait Configureable {
fn set_config(&mut self, cfg: Value);
}
pub trait Hook : Configureable + Debug {
}
pub mod read {
use storeid::StoreId;
use store::FileLockEntry;
use super::HookResult;
use super::Hook;
pub trait PreReadHook : Debug {
pub trait PreReadHook : Hook {
fn pre_read(&self, &StoreId) -> HookResult<()>;
}
pub trait PostReadHook : Debug {
pub trait PostReadHook : Hook {
fn post_read<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
}
}
pub mod create {
use std::fmt::Debug;
use storeid::StoreId;
use store::FileLockEntry;
use super::HookResult;
use super::Hook;
pub trait PreCreateHook : Debug {
pub trait PreCreateHook : Hook {
fn pre_create(&self, &StoreId) -> HookResult<()>;
}
pub trait PostCreateHook : Debug {
pub trait PostCreateHook : Hook {
fn post_create<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
}
}
pub mod retrieve {
use std::fmt::Debug;
use storeid::StoreId;
use store::FileLockEntry;
use super::HookResult;
use super::Hook;
pub trait PreRetrieveHook : Debug {
pub trait PreRetrieveHook : Hook {
fn pre_retrieve(&self, &StoreId) -> HookResult<()>;
}
pub trait PostRetrieveHook : Debug {
pub trait PostRetrieveHook : Hook {
fn post_retrieve<'a>(&self, FileLockEntry<'a>) -> HookResult<FileLockEntry<'a>>;
}
}
pub mod update {
use std::fmt::Debug;
use store::FileLockEntry;
use super::HookResult;
use super::Hook;
pub trait PreUpdateHook : Debug {
pub trait PreUpdateHook : Hook {
fn pre_update(&self, &FileLockEntry) -> HookResult<()>;
}
pub trait PostUpdateHook : Debug {
pub trait PostUpdateHook : Hook {
fn post_update(&self, &FileLockEntry) -> HookResult<()>;
}
}
pub mod delete {
use std::fmt::Debug;
use storeid::StoreId;
use store::FileLockEntry;
use super::HookResult;
use super::Hook;
pub trait PreDeleteHook : Debug {
pub trait PreDeleteHook : Hook {
fn pre_delete(&self, &StoreId) -> HookResult<()>;
}
pub trait PostDeleteHook : Debug {
pub trait PostDeleteHook : Hook {
fn post_delete(&self, &StoreId) -> HookResult<()>;
}
}