Distributed database pattern built.

Co-Authored-By: kay@zed.dev

crates/util/src/channel.rs

@@ -0,0 +1,32 @@
+use std::env;
+
+use lazy_static::lazy_static;
+
+lazy_static! {
+    pub static ref RELEASE_CHANNEL_NAME: String = env::var("ZED_RELEASE_CHANNEL")
+        .unwrap_or(include_str!("../../zed/RELEASE_CHANNEL").to_string());
+    pub static ref RELEASE_CHANNEL: ReleaseChannel = match RELEASE_CHANNEL_NAME.as_str() {
+        "dev" => ReleaseChannel::Dev,
+        "preview" => ReleaseChannel::Preview,
+        "stable" => ReleaseChannel::Stable,
+        _ => panic!("invalid release channel {}", *RELEASE_CHANNEL_NAME),
+    };
+}
+
+#[derive(Copy, Clone, PartialEq, Eq, Default)]
+pub enum ReleaseChannel {
+    #[default]
+    Dev,
+    Preview,
+    Stable,
+}
+
+impl ReleaseChannel {
+    pub fn name(&self) -> &'static str {
+        match self {
+            ReleaseChannel::Dev => "Zed Dev",
+            ReleaseChannel::Preview => "Zed Preview",
+            ReleaseChannel::Stable => "Zed",
+        }
+    }
+}

crates/util/src/lib.rs

@@ -1,3 +1,4 @@
+pub mod channel;
 pub mod paths;
 #[cfg(any(test, feature = "test-support"))]
 pub mod test;