fix: remove protobuf crate

.github/workflows/rust.yml

@@ -41,12 +41,6 @@ jobs:
           command: clippy
           args: --all-targets --features flamegraph,prost-codec -- -D warnings
 
-      - name: Run cargo clippy protobuf
-        uses: actions-rs/cargo@v1.0.3
-        with:
-          command: clippy
-          args: --all-targets --features flamegraph,protobuf-codec -- -D warnings
-
       - name: Check if the prost file committed to git is up-to-date
         run: |
           git diff --no-ext-diff --exit-code

Cargo.toml

@@ -19,7 +19,6 @@ frame-pointer = []
 # A private feature to indicate either prost-codec or protobuf-codec is enabled.
 _protobuf = []
 prost-codec = ["prost", "prost-derive", "prost-build", "sha2", "_protobuf"]
-protobuf-codec = ["protobuf", "protobuf-codegen-pure", "_protobuf"]
 
 [dependencies]
 backtrace = { version = "0.3" }
@@ -37,7 +36,6 @@ smallvec = "1.13"
 inferno = { version = "0.11", default-features = false, features = ["nameattr"], optional = true }
 prost = { version = "0.12", optional = true }
 prost-derive = { version = "0.12", optional = true }
-protobuf = { version = "2.28", optional = true }
 criterion = {version = "0.5", optional = true}
 
 [dependencies.symbolic-demangle]
@@ -52,7 +50,6 @@ rand = "0.8.5"
 [build-dependencies]
 prost-build = { version = "0.12", optional = true }
 sha2 = { version = "0.10", optional = true }
-protobuf-codegen-pure = { version = "2.28", optional = true }
 
 [[example]]
 name = "flamegraph"

build.rs

@@ -1,27 +1,5 @@
 // Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
-#[cfg(feature = "protobuf-codec")]
-// Allow deprecated as TiKV pin versions to a outdated one.
-#[allow(deprecated)]
-fn generate_protobuf() {
-    use std::io::Write;
-
-    let out_dir = std::env::var("OUT_DIR").unwrap();
-    protobuf_codegen_pure::run(protobuf_codegen_pure::Args {
-        out_dir: &out_dir,
-        includes: &["proto"],
-        input: &["proto/profile.proto"],
-        customize: protobuf_codegen_pure::Customize {
-            generate_accessors: Some(false),
-            lite_runtime: Some(true),
-            ..Default::default()
-        },
-    })
-    .unwrap();
-    let mut f = std::fs::File::create(format!("{}/mod.rs", out_dir)).unwrap();
-    write!(f, "pub mod profile;").unwrap();
-}
-
 #[cfg(feature = "prost-codec")]
 fn generate_prost() {
     use sha2::{Digest, Sha256};
@@ -67,6 +45,4 @@ fn generate_prost() {
 fn main() {
     #[cfg(feature = "prost-codec")]
     generate_prost();
-    #[cfg(feature = "protobuf-codec")]
-    generate_protobuf();
 }

src/lib.rs

@@ -66,7 +66,7 @@ pub use self::report::{Report, ReportBuilder, UnresolvedReport};
 pub use inferno::flamegraph;
 
 #[allow(clippy::all)]
-#[cfg(all(feature = "prost-codec", not(feature = "protobuf-codec")))]
+#[cfg(feature = "prost-codec")]
 pub mod protos {
     pub use prost::Message;
 
@@ -76,14 +76,5 @@ pub mod protos {
     ));
 }
 
-#[cfg(feature = "protobuf-codec")]
-pub mod protos {
-    pub use protobuf::Message;
-
-    include!(concat!(env!("OUT_DIR"), "/mod.rs"));
-
-    pub use self::profile::*;
-}
-
 #[cfg(feature = "criterion")]
 pub mod criterion;