Add bazel support for easier external integration

Signed-off-by: Evgeny Petrov <evgeny@epetrov.net>

.bazelrc

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+build  --cxxopt='-std=c++17'

.bazelversion

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+6.4.0

.github/workflows/bazel_build.yml

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+name: Bazel Build
+run-name: ${{ github.actor }} is building with bazel
+on: [push]
+jobs:
+  bazel-build:
+    runs-on: ubuntu-22.04
+    steps:
+      - run: echo branch name is ${{ github.ref }}
+      - name: Checkout
+        uses: actions/checkout@v4.1.0
+      - name: Mount bazel cache
+        uses: actions/cache@v3
+        with:
+          path: "~/.cache/bazel"
+          key: "bazel-cache"
+      - name: Build all
+        run: >
+          bazel build //...
+      - name: Try to run something
+        run: >
+          bazel run //:manager -- --help

BUILD.bazel

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+genrule(
+  name = "compile_time_settings",
+  outs = ["include/everest/compile_time_settings.hpp"],
+  cmd = """
+    echo "#define EVEREST_INSTALL_PREFIX \\"/usr\\"" > $@
+    echo "#define EVEREST_NAMESPACE (\\"everest\\")" >> $@
+  """,
+)
+
+cc_library(
+  name = "framework",
+  hdrs = glob(["include/**/*.hpp"]) + [":compile_time_settings"],
+  srcs = glob(["lib/*.cpp"]),
+  deps = [
+    "@com_github_everest_liblog//:liblog",
+    "@com_github_HowardHinnant_date//:date",
+    "@com_github_nlohmann_json//:json",
+    "@com_github_fmtlib_fmt//:fmt",
+    "@com_github_biojppm_rapidyaml//:ryml",
+    "@com_github_pboettch_json-schema-validator//:json-schema-validator",
+    "@com_github_LiamBindle_mqtt-c//:libmqtt",
+    "@boost//:uuid",
+    "@boost//:program_options",
+  ],
+  strip_include_prefix = "include",
+)
+
+cc_library(
+  name = "controller-ipc",
+  srcs = glob(["src/controller/*.cpp"]),
+  hdrs = glob(["src/controller/*.hpp"]),
+  deps = [
+    "@com_github_nlohmann_json//:json",
+    "@com_github_fmtlib_fmt//:fmt",
+    "@com_github_biojppm_rapidyaml//:ryml",
+    "@com_github_everest_liblog//:liblog",
+    ":framework",
+    "@com_github_warmcatt_libwebsockets//:libwebsockets",
+  ],
+  strip_include_prefix = "src",
+)
+
+cc_binary(
+  name = "manager",
+  srcs = [
+    "src/manager.cpp"
+  ],
+  deps = [
+    "@com_github_everest_liblog//:liblog",
+    "@com_github_fmtlib_fmt//:fmt",
+    ":framework",
+    "@com_github_pboettch_json-schema-validator//:json-schema-validator",
+    ":controller-ipc",
+    "@boost//:program_options",
+  ]
+)

WORKSPACE.bazel

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+workspace(name = "com_github_everest_everest-framework")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+
+load("//bazel:repos.bzl", "everest_framework_repos")
+everest_framework_repos()
+
+load("//bazel:deps.bzl", "everest_framework_deps")
+everest_framework_deps()

bazel/README.md

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+# using everst-framework from bazel workspace.
+
+Add the following to your WORKSPACE file:
+```
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+EVEREST_FRAMEWORK_REVISION = "4c0488de5eca3a9bc7c9258fc3715c5d6aab8c10"
+
+http_archive(
+  name = "com_github_everest_everest-framework",
+  url = "https://github.com/EVerest/everest-framework/archive/{}.tar.gz".format(EVEREST_FRAMEWORK_REVISION),
+  strip_prefix = "everest-framework-4c0488de5eca3a9bc7c9258fc3715c5d6aab8c10",
+)
+
+# This load some definitions need to load dependencies on the next step
+load("@com_github_everest_everest-framework//bazel:repos.bzl", "everest_framework_repos")
+everest_framework_repos()
+
+# Load all dependencies
+load("@com_github_everest_everest-framework//bazel:deps.bzl", "everest_framework_deps")
+everest_framework_deps()
+
+```
+
+After that, framework library will be available as `@com_github_everest_everest-framework//:framework` and the manager binary as `@com_github_everest_everest-framework//:manager`

bazel/deps.bzl

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+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
+load("@rules_foreign_cc//foreign_cc:repositories.bzl", "rules_foreign_cc_dependencies")
+load("@com_github_nelhage_rules_boost//:boost/boost.bzl", "boost_deps")
+
+
+def everest_framework_deps(repo_mapping = {}):
+  boost_deps()
+  rules_foreign_cc_dependencies()
+
+  maybe(
+    git_repository,
+    name = "boringssl",
+    commit = "b9232f9e27e5668bc0414879dcdedb2a59ea75f2",
+    remote = "https://boringssl.googlesource.com/boringssl",
+    shallow_since = "1637714942 +0000",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_curl_curl",
+    url = "https://github.com/curl/curl/archive/refs/tags/curl-7_83_0.tar.gz",
+    sha256 = "9350985ab43591ecd04b087f9c9dad84b952c35c6012e2a08ae355ae797db988",
+    strip_prefix = "curl-curl-7_83_0",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.curl.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_everest_liblog",
+    url = "https://github.com/EVerest/liblog/archive/5c132fb0bcdfb41d6285c4f834ae4657d7a6bff6.tar.gz",
+    sha256 = "19b017a8ef4948bd0692f1d683d0031e76daa21d43a4bddff818bb77e0827fac",
+    strip_prefix = "liblog-5c132fb0bcdfb41d6285c4f834ae4657d7a6bff6",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.liblog.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_pboettch_json-schema-validator",
+    url = "https://github.com/pboettch/json-schema-validator/archive/f4194d7e24e2e2365660ff35b57a7c4e088b27fa.tar.gz",
+    sha256 = "f71f2fbef135a61ad7bd9444f4202f9698a4b1c70279cb1e9b2567a6d996aaa1",
+    strip_prefix = "json-schema-validator-f4194d7e24e2e2365660ff35b57a7c4e088b27fa",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.json-schema-validator.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_HowardHinnant_date",
+    url = "https://github.com/HowardHinnant/date/archive/2ef74cb41a31dcd03b39dd5e9bf8b340669f48a4.tar.gz",
+    sha256 = "3446ad7e2ba07c9105769bf6fd9b521d4e3a2f2dd0a955643a20f4adb1870efa",
+    strip_prefix = "date-2ef74cb41a31dcd03b39dd5e9bf8b340669f48a4",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.date.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_biojppm_rapidyaml",
+    url = "https://github.com/biojppm/rapidyaml/archive/213b201d264139cd1b887790197e08850af628e3.tar.gz",
+    sha256 = "c206d4565ccfa721991a8df90821d1a1f747e68385a0f3f5b9ab995e191c06be",
+    strip_prefix = "rapidyaml-213b201d264139cd1b887790197e08850af628e3",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.rapidyaml.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_biojppm_c4core",
+    url = "https://github.com/biojppm/c4core/archive/d35c7c9bf370134595699d791e6ff8db018ddc8d.tar.gz",
+    sha256 = "b768c8fb5dd4740317b7e1a3e43a0b32615d4d4e1e974d7ab515a80d2f1f318d",
+    strip_prefix = "c4core-d35c7c9bf370134595699d791e6ff8db018ddc8d",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.c4core.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_biojppm_debugbreak",
+    url = "https://github.com/biojppm/debugbreak/archive/5dcbe41d2bd4712c8014aa7e843723ad7b40fd74.tar.gz",
+    sha256 = "4b424d23dad957937c57c142648d32571a78a6c6b2e473709748e5c1bb8a0f92",
+    strip_prefix = "debugbreak-5dcbe41d2bd4712c8014aa7e843723ad7b40fd74",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.debugbreak.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_fastfloat_fastfloat",
+    url = "https://github.com/fastfloat/fast_float/archive/32d21dcecb404514f94fb58660b8029a4673c2c1.tar.gz",
+    sha256 = "8035a9ca28a8e3dfee332c7960af3c06ef0ab5169d5f31228b89c469e882bef7",
+    strip_prefix = "fast_float-32d21dcecb404514f94fb58660b8029a4673c2c1",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.fastfloat.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_warmcatt_libwebsockets",
+    url = "https://github.com/warmcat/libwebsockets/archive/b0a749c8e7a8294b68581ce4feac0e55045eb00b.tar.gz",
+    sha256 = "5c3d6d482e73a0c105f3f14ce9b03c27b5d51c3938f8483b7eb8e6d535baa25f",
+    strip_prefix = "libwebsockets-b0a749c8e7a8294b68581ce4feac0e55045eb00b",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.libwebsockets.bazel",
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_LiamBindle_mqtt-c",
+    url = "https://github.com/LiamBindle/MQTT-C/archive/f69ce1e7fd54f3b1834c9c9137ce0ec5d703cb4d.tar.gz",
+    sha256 = "0b3ab84e5bca3c0c29be6b84af6f9840d92a0ae4fc00ca74fdcacc30b2b0a1e9",
+    strip_prefix = "MQTT-C-f69ce1e7fd54f3b1834c9c9137ce0ec5d703cb4d",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.mqtt-c.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_nlohmann_json",
+    urls = ["https://github.com/nlohmann/json/archive/refs/tags/v3.11.2.tar.gz"],
+    strip_prefix = "json-3.11.2",
+    sha256 = "d69f9deb6a75e2580465c6c4c5111b89c4dc2fa94e3a85fcd2ffcd9a143d9273",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.nlohmann_json.bazel",
+    repo_mapping = repo_mapping,
+  )
+
+  maybe(
+    http_archive,
+    name = "com_github_fmtlib_fmt",
+    urls = ["https://github.com/fmtlib/fmt/archive/refs/tags/10.1.1.tar.gz"],
+    strip_prefix = "fmt-10.1.1",
+    sha256 = "78b8c0a72b1c35e4443a7e308df52498252d1cefc2b08c9a97bc9ee6cfe61f8b",
+    build_file = "@com_github_everest_everest-framework//bazel/third-party:BUILD.fmt.bazel",
+    repo_mapping = repo_mapping,
+  )

bazel/repos.bzl

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+""" In this file we pull a couple of repos that have own 
+    macros to pull other repos.
+"""
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
+
+def everest_framework_repos(repo_mapping = {}):
+  maybe(
+    http_archive,
+    name = "com_github_nelhage_rules_boost",
+
+    # Replace the commit hash in both places (below) with the latest, rather than using the stale one here.
+    # Even better, set up Renovate and let it do the work for you (see "Suggestion: Updates" in the README).
+    url = "https://github.com/nelhage/rules_boost/archive/4ab574f9a84b42b1809978114a4664184716f4bf.tar.gz",
+    sha256 = "2215e6910eb763a971b1f63f53c45c0f2b7607df38c96287666d94d954da8cdc",
+    strip_prefix = "rules_boost-4ab574f9a84b42b1809978114a4664184716f4bf",
+    # When you first run this tool, it'll recommend a sha256 hash to put here with a message like: "DEBUG: Rule 'com_github_nelhage_rules_boost' indicated that a canonical reproducible form can be obtained by modifying arguments sha256 = ..."
+  )
+
+  maybe(
+    http_archive,
+    name = "rules_foreign_cc",
+    url = "https://github.com/bazelbuild/rules_foreign_cc/archive/0.5.1.tar.gz",
+    sha256 = "33a5690733c5cc2ede39cb62ebf89e751f2448e27f20c8b2fbbc7d136b166804",
+    strip_prefix = "rules_foreign_cc-0.5.1",
+    repo_mapping = repo_mapping,
+  )
+

bazel/third-party/BUILD.c4core.bazel

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+cc_library(
+  name = "c4",
+  srcs = glob(["src/**/*.cpp"]),
+  hdrs = glob([
+    "src/**/*.hpp",
+    "src/**/*.h"
+  ]),
+  visibility = [
+    "//visibility:public",
+  ],
+  strip_include_prefix = "src",
+  deps = [
+    "@com_github_biojppm_debugbreak//:debugbreak",
+    "@com_github_fastfloat_fastfloat//:fastfloat",
+  ]
+)