Add Wasmtime runtime.

BUILD

@@ -1,18 +1,9 @@
+load("//:bazel/variables.bzl", "COPTS", "LINKOPTS")
+
 licenses(["notice"])  # Apache 2
 
 package(default_visibility = ["//visibility:public"])
 
-COPTS = select({
-    "@bazel_tools//src/conditions:windows": [
-        "/std:c++17",
-        "-DWITHOUT_ZLIB",
-    ],
-    "//conditions:default": [
-        "-std=c++17",
-        "-DWITHOUT_ZLIB",
-    ],
-})
-
 cc_library(
     name = "include",
     hdrs = glob(["include/proxy-wasm/**/*.h"]),
@@ -21,6 +12,8 @@ cc_library(
     ],
 )
 
+# TODO(mathetkae): once other runtimes(WAVM,V8) can be linked in this repos,
+#   use -define=wasm=v8|wavm|wasmtime and switch
 cc_library(
     name = "lib",
     srcs = glob(
@@ -36,27 +29,6 @@ cc_library(
         "@boringssl//:crypto",
         "@com_google_protobuf//:protobuf_lite",
         "@proxy_wasm_cpp_sdk//:api_lib",
-    ],
-)
-
-cc_test(
-    name = "wasm_vm_test",
-    srcs = ["wasm_vm_test.cc"],
-    copts = COPTS,
-    deps = [
-        ":lib",
-        "@com_google_googletest//:gtest",
-        "@com_google_googletest//:gtest_main",
-    ],
-)
-
-cc_test(
-    name = "context_test",
-    srcs = ["context_test.cc"],
-    copts = COPTS,
-    deps = [
-        ":include",
-        "@com_google_googletest//:gtest",
-        "@com_google_googletest//:gtest_main",
+        "@wasmtime_c_api//:lib",
     ],
 )

WORKSPACE

@@ -31,6 +31,28 @@ load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
 
 bazel_skylib_workspace()
 
+# rust rules
+http_archive(
+    name = "io_bazel_rules_rust",
+    sha256 = "a9548f4d36082770e891149d68b17b7afe144b0b5321d603a5cb2c16027198ab",
+    strip_prefix = "rules_rust-9c889b057ddf4feddae7c5ae6913b7282154aa24",
+    url = "https://github.com/bazelbuild/rules_rust/archive/9c889b057ddf4feddae7c5ae6913b7282154aa24.tar.gz",
+)
+
+load("@io_bazel_rules_rust//rust:repositories.bzl", "rust_repositories")
+
+rust_repositories()
+
+load("@io_bazel_rules_rust//:workspace.bzl", "bazel_version", "rust_workspace")
+
+rust_workspace()
+
+bazel_version(name = "bazel_version")
+
+load("//bazel/cargo:crates.bzl", "proxy_wasm_cpp_host_raze__fetch_remote_crates")
+
+proxy_wasm_cpp_host_raze__fetch_remote_crates()
+
 git_repository(
     name = "com_google_protobuf",
     commit = "655310ca192a6e3a050e0ca0b7084a2968072260",
@@ -51,3 +73,20 @@ http_archive(
     strip_prefix = "googletest-release-1.10.0",
     urls = ["https://github.com/google/googletest/archive/release-1.10.0.tar.gz"],
 )
+
+http_archive(
+    name = "wasmtime",
+    build_file = "@proxy_wasm_cpp_host//bazel/external:wasmtime.BUILD",
+    sha256 = "7874feb1026bbef06796bd5ab80e73f15b8e83752bde8dc93994f5bc039a4952",
+    strip_prefix = "wasmtime-0.21.0",
+    url = "https://github.com/bytecodealliance/wasmtime/archive/v0.21.0.tar.gz",
+)
+
+http_archive(
+    # used for extracting compatible header files
+    name = "wasmtime_c_api",
+    build_file = "@proxy_wasm_cpp_host//bazel/external:wasmtime-c-api.BUILD",
+    sha256 = "c0d4c9209ee25933665c2cfd9d5ff0956c02d4c52f57dfd61fb31fb7baa37f2a",
+    strip_prefix = "wasmtime-v0.21.0-x86_64-linux-c-api",
+    url = "https://github.com/bytecodealliance/wasmtime/releases/download/v0.21.0/wasmtime-v0.21.0-x86_64-linux-c-api.tar.xz",
+)

bazel/cargo/BUILD.bazel

@@ -0,0 +1,76 @@
+"""
+@generated
+cargo-raze workspace build file.
+
+DO NOT EDIT! Replaced on runs of cargo-raze
+"""
+
+package(default_visibility = ["//visibility:public"])
+
+licenses([
+    "notice",  # See individual crates for specific licenses
+])
+
+# Aliased targets
+alias(
+    name = "anyhow",
+    actual = "@proxy_wasm_cpp_host_raze___anyhow__1_0_34//:anyhow",
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+)
+
+alias(
+    name = "env_logger",
+    actual = "@proxy_wasm_cpp_host_raze___env_logger__0_8_1//:env_logger",
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+)
+
+alias(
+    name = "indexmap",
+    actual = "@proxy_wasm_cpp_host_raze___indexmap__1_1_0//:indexmap",
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+)
+
+alias(
+    name = "object",
+    actual = "@proxy_wasm_cpp_host_raze___object__0_21_1//:object",
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+)
+
+alias(
+    name = "once_cell",
+    actual = "@proxy_wasm_cpp_host_raze___once_cell__1_4_1//:once_cell",
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+)
+
+alias(
+    name = "wasmtime",
+    actual = "@proxy_wasm_cpp_host_raze___wasmtime__0_21_0//:wasmtime",
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+)
+
+alias(
+    name = "wasmtime_c_api_macros",
+    actual = "@proxy_wasm_cpp_host_raze___wasmtime_c_api_macros__0_19_0//:wasmtime_c_api_macros",
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+)