Bring consistency to config options

The configuration options that exist in bmcweb are an amalgimation of
CROW options, CMAKE options using #define, pre-bmcweb ifdef mechanisms
and meson options using a config file.  This history has led to a lot of
different ways to configure code in the codebase itself, which has led
to problems, and issues in consistency.

ifdef options do no compile time checking of code not within the branch.
This is good when you have optional dependencies, but not great when
you're trying to ensure both options compile.

This commit moves all internal configuration options to:
1. A namespace called bmcweb
2. A naming scheme matching the meson option.  hyphens are replaced with
   underscores, and the option is uppercased.  This consistent transform
   allows matching up option keys with their code counterparts, without
   naming changes.
3. All options are bool true = enabled, and any options with _ENABLED or
   _DISABLED postfixes have those postfixes removed.  (note, there are
   still some options with disable in the name, those are left as-is)
4. All options are now constexpr booleans, without an explicit compare.

To accomplish this, unfortunately an option list in config/meson.build
is required, given that meson doesn't provide a way to dump all options,
as is a manual entry in bmcweb_config.h.in, in addition to the
meson_options.  This obsoletes the map in the main meson.build, which
helps some of the complexity.

Now that we've done this, we have some rules that will be documented.
1. Runtime behavior changes should be added as a constexpr bool to
   bmcweb_config.h
2. Options that require optionally pulling in a dependency shall use an
   ifdef, defined in the primary meson.build.  (note, there are no
   options that currently meet this class, but it's included for
   completeness.)

Note, that this consolidation means that at configure time, all options
are printed.  This is a good thing and allows direct comparison of
configs in log files.

Tested: Code compiles
Server boots, and shows options configured in the default build. (HTTPS,
log level, etc)

Change-Id: I94e79a56bcdc01755036e4e7278c7e69e25809ce
Signed-off-by: Ed Tanous <ed@tanous.net>

1 files changed, 50 insertions, 22 deletions

diff --git a/config/bmcweb_config.h.in b/config/bmcweb_config.h.in
index eb0c79c77a..81a61c8b17 100644
--- a/config/bmcweb_config.h.in
+++ b/config/bmcweb_config.h.in
@@ -1,29 +1,57 @@
 #pragma once
 
 #include <cstdint>
-#include <cstddef>
 #include <string_view>
 
 // clang-format off
-constexpr const bool bmcwebInsecureEnableQueryParams = @BMCWEB_INSECURE_ENABLE_QUERY_PARAMS@ == 1;
-
-constexpr const size_t bmcwebHttpReqBodyLimitMb = @BMCWEB_HTTP_REQ_BODY_LIMIT_MB@;
-
-constexpr const char* mesonInstallPrefix = "@MESON_INSTALL_PREFIX@";
-
-constexpr const bool bmcwebInsecureEnableHttpPushStyleEventing = @BMCWEB_INSECURE_ENABLE_HTTP_PUSH_STYLE_EVENTING@ == 1;
-
-constexpr const char* bmcwebLoggingLevel = "@BMCWEB_LOGGING_LEVEL@";
-
-constexpr const bool bmcwebEnableMultiHost = @BMCWEB_ENABLE_MULTI_HOST@ == 1;
-
-constexpr const bool bmcwebEnableHTTP2 = @BMCWEB_ENABLE_HTTP2@ == 1;
-
-constexpr const bool bmcwebEnableTLS = @BMCWEB_ENABLE_TLS@ == 1;
-
-constexpr const bool bmcwebMTLSCommonNameParsingMeta = @BMCWEB_ENABLE_MTLS_COMMON_NAME_PARSING_META@ == 1;
-
-constexpr const bool bmcwebNbdProxy = @BMCWEB_VIRTUAL_MEDIA_NBD@ == 1;
-
-constexpr const bool bmcwebVmWebsocket = @BMCWEB_VIRTUAL_MEDIA_VM@ == 1;
+// NOLINTBEGIN(readability-identifier-naming)
+
+// String params
+constexpr const std::string_view BMCWEB_LOGGING_LEVEL = "@LOGGING_LEVEL@";
+constexpr const std::string_view BMCWEB_MUTUAL_TLS_COMMON_NAME_PARSING = "@MUTUAL_TLS_COMMON_NAME_PARSING@";
+constexpr const std::string_view BMCWEB_DNS_RESOLVER = "@DNS_RESOLVER@";
+
+// Integer params
+constexpr const uint64_t BMCWEB_HTTP_BODY_LIMIT = @HTTP_BODY_LIMIT@;
+constexpr const uint16_t BMCWEB_HTTPS_PORT = @HTTPS_PORT@;
+
+// Feature Params
+constexpr const bool BMCWEB_BASIC_AUTH = @BASIC_AUTH@;
+constexpr const bool BMCWEB_COOKIE_AUTH = @COOKIE_AUTH@;
+constexpr const bool BMCWEB_EXPERIMENTAL_HTTP2 = @EXPERIMENTAL_HTTP2@;
+constexpr const bool BMCWEB_EXPERIMENTAL_REDFISH_MULTI_COMPUTER_SYSTEM = @EXPERIMENTAL_REDFISH_MULTI_COMPUTER_SYSTEM@;
+constexpr const bool BMCWEB_HOST_SERIAL_SOCKET = @HOST_SERIAL_SOCKET@;
+constexpr const bool BMCWEB_INSECURE_DISABLE_AUTH = @INSECURE_DISABLE_AUTH@;
+constexpr const bool BMCWEB_INSECURE_DISABLE_CSRF = @INSECURE_DISABLE_CSRF@;
+constexpr const bool BMCWEB_INSECURE_DISABLE_SSL = @INSECURE_DISABLE_SSL@;
+constexpr const bool BMCWEB_INSECURE_ENABLE_REDFISH_QUERY = @INSECURE_ENABLE_REDFISH_QUERY@;
+constexpr const bool BMCWEB_INSECURE_IGNORE_CONTENT_TYPE = @INSECURE_IGNORE_CONTENT_TYPE@;
+constexpr const bool BMCWEB_INSECURE_PUSH_STYLE_NOTIFICATION = @INSECURE_PUSH_STYLE_NOTIFICATION@;
+constexpr const bool BMCWEB_INSECURE_TFTP_UPDATE = @INSECURE_TFTP_UPDATE@;
+constexpr const bool BMCWEB_KVM = @KVM@;
+constexpr const bool BMCWEB_MUTUAL_TLS_AUTH = @MUTUAL_TLS_AUTH@;
+constexpr const bool BMCWEB_REDFISH_AGGREGATION = @REDFISH_AGGREGATION@;
+constexpr const bool BMCWEB_REDFISH_ALLOW_DEPRECATED_POWER_THERMAL = @REDFISH_ALLOW_DEPRECATED_POWER_THERMAL@;
+constexpr const bool BMCWEB_REDFISH_BMC_JOURNAL = @REDFISH_BMC_JOURNAL@;
+constexpr const bool BMCWEB_REDFISH_CPU_LOG = @REDFISH_CPU_LOG@;
+constexpr const bool BMCWEB_REDFISH_DBUS_LOG = @REDFISH_DBUS_LOG@;
+constexpr const bool BMCWEB_REDFISH_DUMP_LOG = @REDFISH_DUMP_LOG@;
+constexpr const bool BMCWEB_REDFISH_HOST_LOGGER = @REDFISH_HOST_LOGGER@;
+constexpr const bool BMCWEB_REDFISH_NEW_POWERSUBSYSTEM_THERMALSUBSYSTEM = @REDFISH_NEW_POWERSUBSYSTEM_THERMALSUBSYSTEM@;
+constexpr const bool BMCWEB_REDFISH_OEM_MANAGER_FAN_DATA = @REDFISH_OEM_MANAGER_FAN_DATA@;
+constexpr const bool BMCWEB_REDFISH_PROVISIONING_FEATURE = @REDFISH_PROVISIONING_FEATURE@;
+constexpr const bool BMCWEB_REDFISH = @REDFISH@;
+constexpr const bool BMCWEB_REST = @REST@;
+constexpr const bool BMCWEB_SESSION_AUTH = @SESSION_AUTH@;
+constexpr const bool BMCWEB_STATIC_HOSTING = @STATIC_HOSTING@;
+constexpr const bool BMCWEB_TESTS = @TESTS@;
+constexpr const bool BMCWEB_VM_WEBSOCKET = @VM_WEBSOCKET@;
+constexpr const bool BMCWEB_VM_NBDPROXY = false;
+constexpr const bool BMCWEB_XTOKEN_AUTH = @XTOKEN_AUTH@;
+
+// Company specific params
+constexpr const bool BMCWEB_GOOGLE_API = @GOOGLE_API@;
+constexpr const bool BMCWEB_IBM_MANAGEMENT_CONSOLE = @IBM_MANAGEMENT_CONSOLE@;
+
+// NOLINTEND(readability-identifier-naming)
 // clang-format on