feat: Add vendored support

.gitattributes

@@ -0,0 +1 @@
+src/generated/ diff=false

Cargo.toml

@@ -10,6 +10,7 @@ edition = "2021"
 
 [features]
 default = ["prometheus/process"]
+vendored = []
 # Enable integration tests with a running TiKV and PD instance.
 # Use $PD_ADDRS, comma separated, to set the addresses the tests use.
 integration-tests = []
@@ -39,7 +40,6 @@ tokio = { version = "1", features = ["sync", "rt-multi-thread", "macros"] }
 tonic = { version = "0.9", features = ["tls"] }
 
 [dev-dependencies]
-tempfile = "3.6"
 clap = "2"
 env_logger = "0.10"
 fail = { version = "0.4", features = ["failpoints"] }
@@ -51,6 +51,7 @@ reqwest = { version = "0.11", default-features = false, features = [
 serde_json = "1"
 serial_test = "0.5.0"
 simple_logger = "1"
+tempfile = "3.6"
 tokio = { version = "1", features = ["sync", "rt-multi-thread", "macros"] }
 
 [build-dependencies]

build.rs

@@ -1,18 +1,22 @@
 // Copyright 2020 TiKV Project Authors. Licensed under Apache-2.0.
 
-use tonic_disable_doctest::BuilderEx;
-
 fn main() {
-    tonic_build::configure()
-        .disable_doctests_for_types([".google.api.HttpRule"])
-        .build_server(false)
-        .include_file("mod.rs")
-        .compile(
-            &glob::glob("proto/*.proto")
-                .unwrap()
-                .collect::<Result<Vec<_>, _>>()
-                .unwrap(),
-            &["proto/include", "proto"],
-        )
-        .unwrap();
+    #[cfg(not(feature = "vendored"))]
+    {
+        use tonic_disable_doctest::BuilderEx;
+
+        tonic_build::configure()
+            .disable_doctests_for_types([".google.api.HttpRule"])
+            .build_server(false)
+            .include_file("mod.rs")
+            .out_dir("src/generated")
+            .compile(
+                &glob::glob("proto/*.proto")
+                    .unwrap()
+                    .collect::<Result<Vec<_>, _>>()
+                    .unwrap(),
+                &["proto/include", "proto"],
+            )
+            .unwrap();
+    }
 }