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From: Lukas Wagner <l.wagner@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Thu, 20 Jul 2023 16:31:44 +0200
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Subject: [pve-devel] [PATCH v4 proxmox 17/69] notify: add context
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Since `proxmox-notify` is intended to be used by multiple products,
there needs to be a way to inject product-specific behavior.
Signed-off-by: Lukas Wagner <l.wagner@proxmox.com>
---
Notes:
Changes since v3:
- Use OnceCell instead of Mutex
proxmox-notify/Cargo.toml | 1 +
proxmox-notify/src/context.rs | 14 ++++++++++++++
proxmox-notify/src/lib.rs | 1 +
3 files changed, 16 insertions(+)
create mode 100644 proxmox-notify/src/context.rs
diff --git a/proxmox-notify/Cargo.toml b/proxmox-notify/Cargo.toml
index 6bf4d076..5cceb0b7 100644
--- a/proxmox-notify/Cargo.toml
+++ b/proxmox-notify/Cargo.toml
@@ -11,6 +11,7 @@ exclude.workspace = true
handlebars = { workspace = true }
lazy_static.workspace = true
log.workspace = true
+once_cell.workspace = true
openssl.workspace = true
proxmox-http = { workspace = true, features = ["client-sync"], optional = true }
proxmox-human-byte.workspace = true
diff --git a/proxmox-notify/src/context.rs b/proxmox-notify/src/context.rs
new file mode 100644
index 00000000..660b27fb
--- /dev/null
+++ b/proxmox-notify/src/context.rs
@@ -0,0 +1,14 @@
+use once_cell::sync::OnceCell;
+use std::fmt::Debug;
+
+pub trait Context: Send + Sync + Debug {}
+
+static CONTEXT: OnceCell<&'static dyn Context> = OnceCell::new();
+
+pub fn set_context(context: &'static dyn Context) {
+ CONTEXT.set(context).expect("context has already been set");
+}
+
+pub(crate) fn context() -> &'static dyn Context {
+ *CONTEXT.get().expect("context has not been yet")
+}
diff --git a/proxmox-notify/src/lib.rs b/proxmox-notify/src/lib.rs
index e254604b..0059e44b 100644
--- a/proxmox-notify/src/lib.rs
+++ b/proxmox-notify/src/lib.rs
@@ -13,6 +13,7 @@ use std::error::Error as StdError;
pub mod api;
mod config;
+pub mod context;
pub mod endpoints;
pub mod filter;
pub mod group;
--
2.39.2