feat: Add sample using regex to rewrite a path

Cargo.toml

@@ -4,6 +4,7 @@ version = "0.0.0"
 
 [dependencies]
 log = "0.4"
+regex = "1.9"
 url = "2.4"
 
 # Mandatory for cargo-raze

README.md

@@ -10,7 +10,7 @@ unit test that verifies both.
 
 Build all plugins and run all plugin tests:
 
-`$ bazelisk test --test_output=all --define engine=v8 samples/...`
+`$ bazelisk test --test_output=all //samples/...`
 
 # Samples & Recipes
 
@@ -29,6 +29,9 @@ plugin. Extend them to fit your particular use case.
 *   [Log the value of a query parameter](samples/query_log): Emit a custom
     variable to Cloud Logging. Demonstrate a standard way to parse query string
     values from the request.
+*   [Rewrite the path using regex](samples/regex_rewrite): Remove a piece of the
+    URI using regex replacement. Demonstrate a standard way to use regular
+    expressions, compiling them at plugin initialization.
 
 # Feature set / ABI
 

WORKSPACE

@@ -46,13 +46,20 @@ http_archive(
 load("@com_github_nelhage_rules_boost//:boost/boost.bzl", "boost_deps")
 boost_deps()
 
-# Upgrade googletest to v1.13.0 to support bazel 6.0.0
-# TODO merge upstream to proxy-wasm-cpp-host/bazel/repositories.bzl
+# Include Google RE2.
 http_archive(
-    name = "com_google_googletest",
-    sha256 = "ad7fdba11ea011c1d925b3289cf4af2c66a352e18d4c7264392fead75e919363",
-    strip_prefix = "googletest-1.13.0",
-    url = "https://github.com/google/googletest/archive/v1.13.0.tar.gz",
+    name = "com_google_re2",
+    sha256 = "18cf85922e27fad3ed9c96a27733037da445f35eb1a2744c306a37c6d11e95c4",
+    strip_prefix = "re2-2023-07-01",
+    url = "https://github.com/google/re2/archive/2023-07-01.tar.gz",
+)
+
+# Upgrade Abseil to work with latest Emscripten and STANDALONE_WASM
+http_archive(
+    name = "com_google_absl",  # 2023-04-06T14:42:25Z
+    sha256 = "a50452f02402262f9a61a8eedda60f76dda6b9538d36b34b55bce9f74a4d5ef8",
+    strip_prefix = "abseil-cpp-e73b9139ee9b853a4bd7812531442c138da09084",
+    urls = ["https://github.com/abseil/abseil-cpp/archive/e73b9139ee9b853a4bd7812531442c138da09084.zip"],
 )
 
 # Duplicate ProxyWasm WORKSPACE files (dependencies)

cargo/BUILD.bazel

@@ -21,6 +21,15 @@ alias(
     ],
 )
 
+alias(
+    name = "regex",
+    actual = "@raze__regex__1_9_1//:regex",
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+)
+
 alias(
     name = "url",
     actual = "@raze__url__2_4_0//:url",

cargo/Cargo.raze.lock

@@ -1,5 +1,14 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+[[package]]
+name = "aho-corasick"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43f6cb1bf222025340178f382c426f13757b2960e89779dfcb319c32542a5a41"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.0"
@@ -25,17 +34,53 @@ version = "0.4.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b06a4cde4c0f271a446782e3eff8de789548ce57dbc8eca9292c27f4a42004b4"
 
+[[package]]
+name = "memchr"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b2a4787296e9989611394c33f193f676704af1686e70b8f8033ab5ba9a35a94"
 
+[[package]]
+name = "regex"
+version = "1.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2eae68fc220f7cf2532e4494aded17545fce192d59cd996e0fe7887f4ceb575"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39354c10dd07468c2e73926b23bb9c2caca74c5501e38a35da70406f1d923310"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2"
+
 [[package]]
 name = "service-extensions-samples"
 version = "0.0.0"
 dependencies = [
  "log",
+ "regex",
  "url",
 ]
 

cargo/crates.bzl

@@ -11,6 +11,16 @@ load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")  # buildifier: di
 
 def raze_fetch_remote_crates():
     """This function defines a collection of repos and should be called in a WORKSPACE file"""
+    maybe(
+        http_archive,
+        name = "raze__aho_corasick__1_0_2",
+        url = "https://crates.io/api/v1/crates/aho-corasick/1.0.2/download",
+        type = "tar.gz",
+        sha256 = "43f6cb1bf222025340178f382c426f13757b2960e89779dfcb319c32542a5a41",
+        strip_prefix = "aho-corasick-1.0.2",
+        build_file = Label("//cargo/remote:BUILD.aho-corasick-1.0.2.bazel"),
+    )
+
     maybe(
         http_archive,
         name = "raze__form_urlencoded__1_2_0",
@@ -41,6 +51,16 @@ def raze_fetch_remote_crates():
         build_file = Label("//cargo/remote:BUILD.log-0.4.19.bazel"),
     )
 
+    maybe(
+        http_archive,
+        name = "raze__memchr__2_5_0",
+        url = "https://crates.io/api/v1/crates/memchr/2.5.0/download",
+        type = "tar.gz",
+        sha256 = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d",
+        strip_prefix = "memchr-2.5.0",
+        build_file = Label("//cargo/remote:BUILD.memchr-2.5.0.bazel"),
+    )
+
     maybe(
         http_archive,
         name = "raze__percent_encoding__2_3_0",
@@ -51,6 +71,36 @@ def raze_fetch_remote_crates():
         build_file = Label("//cargo/remote:BUILD.percent-encoding-2.3.0.bazel"),
     )
 
+    maybe(
+        http_archive,
+        name = "raze__regex__1_9_1",
+        url = "https://crates.io/api/v1/crates/regex/1.9.1/download",
+        type = "tar.gz",
+        sha256 = "b2eae68fc220f7cf2532e4494aded17545fce192d59cd996e0fe7887f4ceb575",
+        strip_prefix = "regex-1.9.1",
+        build_file = Label("//cargo/remote:BUILD.regex-1.9.1.bazel"),
+    )
+
+    maybe(
+        http_archive,
+        name = "raze__regex_automata__0_3_3",
+        url = "https://crates.io/api/v1/crates/regex-automata/0.3.3/download",
+        type = "tar.gz",
+        sha256 = "39354c10dd07468c2e73926b23bb9c2caca74c5501e38a35da70406f1d923310",
+        strip_prefix = "regex-automata-0.3.3",
+        build_file = Label("//cargo/remote:BUILD.regex-automata-0.3.3.bazel"),
+    )
+
+    maybe(
+        http_archive,
+        name = "raze__regex_syntax__0_7_4",
+        url = "https://crates.io/api/v1/crates/regex-syntax/0.7.4/download",
+        type = "tar.gz",
+        sha256 = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2",
+        strip_prefix = "regex-syntax-0.7.4",
+        build_file = Label("//cargo/remote:BUILD.regex-syntax-0.7.4.bazel"),
+    )
+
     maybe(
         http_archive,
         name = "raze__tinyvec__1_6_0",

cargo/remote/BUILD.aho-corasick-1.0.2.bazel

@@ -0,0 +1,58 @@
+"""
+@generated
+cargo-raze crate build file.
+
+DO NOT EDIT! Replaced on runs of cargo-raze
+"""
+
+# buildifier: disable=load
+load("@bazel_skylib//lib:selects.bzl", "selects")
+
+# buildifier: disable=load
+load(
+    "@rules_rust//rust:defs.bzl",
+    "rust_binary",
+    "rust_library",
+    "rust_proc_macro",
+    "rust_test",
+)
+
+package(default_visibility = [
+    # Public for visibility by "@raze__crate__version//" targets.
+    #
+    # Prefer access through "//cargo", which limits external
+    # visibility to explicit Cargo.toml dependencies.
+    "//visibility:public",
+])
+
+licenses([
+    "unencumbered",  # Unlicense from expression "Unlicense OR MIT"
+])
+
+# Generated Targets
+
+rust_library(
+    name = "aho_corasick",
+    srcs = glob(["**/*.rs"]),
+    crate_features = [
+        "default",
+        "perf-literal",
+        "std",
+    ],
+    crate_root = "src/lib.rs",
+    data = [],
+    edition = "2021",
+    rustc_flags = [
+        "--cap-lints=allow",
+    ],
+    tags = [
+        "cargo-raze",
+        "crate-name=aho_corasick",
+        "manual",
+    ],
+    version = "1.0.2",
+    # buildifier: leave-alone
+    deps = [
+        "@raze__memchr__2_5_0//:memchr",
+    ],
+)

cargo/remote/BUILD.memchr-2.5.0.bazel

@@ -0,0 +1,88 @@
+"""
+@generated
+cargo-raze crate build file.
+
+DO NOT EDIT! Replaced on runs of cargo-raze
+"""
+
+# buildifier: disable=load
+load("@bazel_skylib//lib:selects.bzl", "selects")
+
+# buildifier: disable=load
+load(
+    "@rules_rust//rust:defs.bzl",
+    "rust_binary",
+    "rust_library",
+    "rust_proc_macro",
+    "rust_test",
+)
+
+package(default_visibility = [
+    # Public for visibility by "@raze__crate__version//" targets.
+    #
+    # Prefer access through "//cargo", which limits external
+    # visibility to explicit Cargo.toml dependencies.
+    "//visibility:public",
+])
+
+licenses([
+    "unencumbered",  # Unlicense from expression "Unlicense OR MIT"
+])
+
+# Generated Targets
+# buildifier: disable=out-of-order-load
+# buildifier: disable=load-on-top
+load(
+    "@rules_rust//cargo:cargo_build_script.bzl",
+    "cargo_build_script",
+)
+
+cargo_build_script(
+    name = "memchr_build_script",
+    srcs = glob(["**/*.rs"]),
+    build_script_env = {
+    },
+    crate_features = [
+        "default",
+        "std",
+    ],
+    crate_root = "build.rs",
+    data = glob(["**"]),
+    edition = "2018",
+    rustc_flags = [
+        "--cap-lints=allow",
+    ],
+    tags = [
+        "cargo-raze",
+        "manual",
+    ],
+    version = "2.5.0",
+    visibility = ["//visibility:private"],
+    deps = [
+    ],
+)
+
+rust_library(
+    name = "memchr",
+    srcs = glob(["**/*.rs"]),
+    crate_features = [
+        "default",
+        "std",
+    ],
+    crate_root = "src/lib.rs",
+    data = [],
+    edition = "2018",
+    rustc_flags = [
+        "--cap-lints=allow",
+    ],
+    tags = [
+        "cargo-raze",
+        "crate-name=memchr",
+        "manual",
+    ],
+    version = "2.5.0",
+    # buildifier: leave-alone
+    deps = [
+        ":memchr_build_script",
+    ],
+)