Add some features to reduce size (#16)

.github/workflows/ci.yml

@@ -10,13 +10,14 @@ on:
 
 jobs:
   build-and-test:
-    name: Build and test (${{ matrix.os }})
+    name: Build and test with features '${{ matrix.features }}' (${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     timeout-minutes: 45
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04]
+        os: [ ubuntu-22.04 ]
+        features: [ "all", "" ]
     env:
       RUST_BACKTRACE: full
     steps:
@@ -40,7 +41,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Run tests
-        run: just verify
+        run: just --set features "${{ matrix.features }}" verify
 
   build-smoke-test:
     name: Build only (${{ matrix.os }} / ${{ matrix.target }})

Cargo.toml

@@ -6,21 +6,28 @@ description = "SDK Shared core"
 license = "MIT"
 repository = "https://github.com/restatedev/sdk-shared-core"
 
+[features]
+default = []
+request_identity = ["dep:ring", "dep:sha2", "dep:jsonwebtoken", "dep:bs58"]
+sha2_random_seed = ["dep:sha2"]
+
 [dependencies]
 thiserror = "1.0.61"
 prost = "0.13.2"
 bytes = "1.6"
 bytes-utils = "0.1.4"
-ambassador = "0.4.0"
 tracing = "0.1.40"
 paste = "1.0.15"
 strum = { version = "0.26", features = ["derive"] }
 base64 = "0.22"
-bs58 = { version = "0.5.0" }
-sha2 = "0.11.0-pre.3"
-ring = { version = "0.17.8" }
-jsonwebtoken = { version = "9.3.0" }
 serde = { version = "1.0.204", features = ["derive"] }
+
+sha2 = { version = "0.11.0-pre.3", optional = true }
+
+bs58 = { version = "0.5.1", optional = true }
+ring = { version = "0.17.8", optional = true }
+jsonwebtoken = { version = "9.3.0", optional = true }
+
 http = { version = "1.1.0", optional = true }
 
 [dev-dependencies]

justfile

@@ -52,7 +52,7 @@ check-fmt:
     cargo fmt --all -- --check
 
 clippy: (_target-installed target)
-    cargo clippy {{ _target-option }} --all-targets --workspace -- -D warnings
+    cargo clippy {{ _target-option }} {{ _features }} --all-targets --workspace -- -D warnings
 
 # Runs all lints (fmt, clippy, deny)
 lint: check-fmt clippy
@@ -64,7 +64,7 @@ print-target:
     @echo {{ _resolved_target }}
 
 test: (_target-installed target)
-    cargo nextest run {{ _target-option }} --all-features
+    cargo nextest run {{ _target-option }} {{ _features }}
 
 # Runs lints and tests
 verify: lint test

src/lib.rs

@@ -1,4 +1,5 @@
 mod headers;
+#[cfg(feature = "request_identity")]
 mod request_identity;
 mod retries;
 mod service_protocol;
@@ -12,6 +13,7 @@ use std::time::Duration;
 pub use crate::retries::RetryPolicy;
 use crate::vm::AsyncResultAccessTrackerInner;
 pub use headers::HeaderMap;
+#[cfg(feature = "request_identity")]
 pub use request_identity::*;
 pub use vm::CoreVM;
 

src/vm/transitions/journal.rs

@@ -15,8 +15,6 @@ use crate::{
     AsyncResultHandle, Header, Input, NonEmptyValue, RetryPolicy, RunEnterResult, RunExitResult,
     VMError,
 };
-use bytes::Buf;
-use sha2::{Digest, Sha256};
 use std::{fmt, mem};
 
 impl State {
@@ -137,12 +135,25 @@ impl TransitionAndReturn<Context, SysInput> for State {
     }
 }
 
+#[cfg(feature = "sha2_random_seed")]
 fn compute_random_seed(id: &[u8]) -> u64 {
+    use bytes::Buf;
+    use sha2::{Digest, Sha256};
+
     let id_hash = Sha256::digest(id);
     let mut b = id_hash.as_slice();
     b.get_u64()
 }
 
+#[cfg(not(feature = "sha2_random_seed"))]
+fn compute_random_seed(id: &[u8]) -> u64 {
+    use std::hash::{DefaultHasher, Hash, Hasher};
+
+    let mut hasher = DefaultHasher::new();
+    id.hash(&mut hasher);
+    hasher.finish()
+}
+
 pub(crate) struct SysNonCompletableEntry<M>(pub(crate) &'static str, pub(crate) M);
 
 impl<M: RestateMessage + EntryMessageHeaderEq + EntryMessage + Clone + WriteableRestateMessage>