Merge the wasi-tls crates into a single one with feature flags

.github/workflows/main.yml

@@ -425,6 +425,13 @@ jobs:
               -p wasmtime-wasi --no-default-features --features p2
               -p wasmtime-wasi --no-default-features --features p3
 
+          - name: wasmtime-wasi-tls
+            checks: |
+              -p wasmtime-wasi-tls --no-default-features
+              -p wasmtime-wasi-tls --no-default-features --features rustls
+              -p wasmtime-wasi-tls --no-default-features --features nativetls
+              -p wasmtime-wasi-tls --no-default-features --features openssl
+
           - name: wasmtime-wizer
             checks: |
               -p wasmtime-wizer --no-default-features
@@ -942,17 +949,17 @@ jobs:
     # Run the tests!
     - run: cargo test -p wasmtime-wasi-nn --features ${{ matrix.feature }}
 
-  # Test `wasmtime-wasi-tls-nativetls` & `wasmtime-wasi-tls-openssl` in their
-  # own job. This is because they depends on OpenSSL, which is not easily
-  # available on all platforms.
+  # Test `wasmtime-wasi-tls` in its own job, as not all of its providers are
+  # compatible with all targets. The primary culprit is the OpenSSL dependency,
+  # which is not easily available on all platforms.
   #
   # The Windows base image has OpenSSL installed by default, but not in a way
   # that is automatically discoverable by `openssl-sys`. We need to configure
   # the OPENSSL_DIR & OPENSSL_LIB_DIR paths manually.
   # Additionally, the GH actions Windows image does not ship with a CA cert
   # bundle, so we use the one from cUrl.
   test_wasi_tls:
-    name: Test wasi-tls using native-tls & openssl providers
+    name: Test wasi-tls
     needs: determine
     if: needs.determine.outputs.run-full
     runs-on: ${{ matrix.os }}
@@ -976,8 +983,7 @@ jobs:
         "SSL_CERT_FILE=$sslCertFile" | Out-File -FilePath $env:GITHUB_ENV -Append
         "OPENSSL_DIR=$opensslDir" | Out-File -FilePath $env:GITHUB_ENV -Append
         "OPENSSL_LIB_DIR=$opensslLibDir" | Out-File -FilePath $env:GITHUB_ENV -Append
-    - run: cargo test -p wasmtime-wasi-tls-openssl
-    - run: cargo test -p wasmtime-wasi-tls-nativetls
+    - run: cargo test -p wasmtime-wasi-tls --all-features
 
   # Test the `wasmtime-fuzzing` crate. Split out from the main tests because
   # `--all-features` brings in OCaml, which is a pain to get setup for all

Cargo.toml

@@ -165,8 +165,6 @@ members = [
   "crates/test-programs",
   "crates/wasi-preview1-component-adapter",
   "crates/wasi-preview1-component-adapter/verify",
-  "crates/wasi-tls-nativetls",
-  "crates/wasi-tls-openssl",
   "crates/debugger",
   "crates/wizer/fuzz",
   "crates/wizer/tests/regex-test",
@@ -253,8 +251,6 @@ wasmtime-wasi-config = { path = "crates/wasi-config", version = "44.0.0" }
 wasmtime-wasi-keyvalue = { path = "crates/wasi-keyvalue", version = "44.0.0" }
 wasmtime-wasi-threads = { path = "crates/wasi-threads", version = "44.0.0" }
 wasmtime-wasi-tls = { path = "crates/wasi-tls", version = "44.0.0" }
-wasmtime-wasi-tls-nativetls = { path = "crates/wasi-tls-nativetls", version = "44.0.0" }
-wasmtime-wasi-tls-openssl = { path = "crates/wasi-tls-openssl", version = "44.0.0" }
 wasmtime-wast = { path = "crates/wast", version = "=44.0.0" }
 
 # Internal Wasmtime-specific crates.

ci/run-tests.py

@@ -7,10 +7,7 @@
 # - wasmtime-wasi-nn: mutually-exclusive features that aren't available for all
 #   targets, needs its own CI job.
 #
-# - wasmtime-wasi-tls-nativetls: the openssl dependency does not play nice with
-#   cross compilation. This crate is tested in a separate CI job.
-#
-# - wasmtime-wasi-tls-openssl: the openssl dependency does not play nice with
+# - wasmtime-wasi-tls: the openssl dependency does not play nice with
 #   cross compilation. This crate is tested in a separate CI job.
 #
 # - wasmtime-fuzzing: enabling all features brings in OCaml which is a pain to
@@ -29,8 +26,7 @@
 args = ['cargo', 'test', '--workspace', '--all-features']
 args.append('--exclude=test-programs')
 args.append('--exclude=wasmtime-wasi-nn')
-args.append('--exclude=wasmtime-wasi-tls-nativetls')
-args.append('--exclude=wasmtime-wasi-tls-openssl')
+args.append('--exclude=wasmtime-wasi-tls')
 args.append('--exclude=wasmtime-fuzzing')
 args.append('--exclude=wasm-spec-interpreter')
 args.append('--exclude=veri_engine')

crates/wasi-tls/Cargo.toml

@@ -11,6 +11,12 @@ description = "Wasmtime implementation of the wasi-tls API"
 [lints]
 workspace = true
 
+[features]
+default = ["rustls"]
+rustls = ["dep:rustls", "dep:tokio-rustls", "dep:webpki-roots"]
+nativetls = ["dep:native-tls", "dep:tokio-native-tls"]
+openssl = ["dep:openssl", "dep:tokio-openssl"]
+
 [dependencies]
 bytes = { workspace = true }
 tokio = { workspace = true, features = [
@@ -21,10 +27,14 @@ tokio = { workspace = true, features = [
 ] }
 wasmtime = { workspace = true, features = ["runtime", "component-model"] }
 wasmtime-wasi = { workspace = true }
-
-tokio-rustls = { workspace = true }
-rustls = { workspace = true }
-webpki-roots = { workspace = true }
+cfg-if = { workspace = true }
+tokio-rustls = { workspace = true, optional = true }
+rustls = { workspace = true, optional = true }
+webpki-roots = { workspace = true, optional = true }
+tokio-native-tls = { workspace = true, optional = true }
+native-tls = { workspace = true, optional = true }
+tokio-openssl = { workspace = true, optional = true }
+openssl = { workspace = true, optional = true }
 
 [dev-dependencies]
 test-programs-artifacts = { workspace = true }