Add hints to HTTP handlers to help users avoid
misspellings. For example, if a user mistakenly writes
`/dashboad` instead of `/dashboard`, they will now get a
hint that /dashboard is the correct handler.
This change will improve the user experience by making it
easier for users to find the correct handlers.
#47662
A simple HelloWorld program with zero includes except iostream triggers
a build of ca. 2000 source files. The reason is that ClickHouse's
top-level CMakeLists.txt overrides "add_executable()" to link all
binaries against "clickhouse_new_delete". This links against
"clickhouse_common_io", which in turn has lots of 3rd party library
dependencies ... Without linking "clickhouse_new_delete", the number of
compiled files for "HelloWorld" goes down to ca. 70.
As an example, the self-extracting-executable needs none of its current
dependencies but other programs may also benefit.
In order to restore access to the original "add_executable()", the
overriding version is now prefixed. There is precedence for a
"clickhouse_" prefix (as opposed to "ch_"), for example
"clickhouse_split_debug_symbols". In general prefixing makes sense also
because overriding CMake commands relies on undocumented behavior and is
considered not-so-great practice (*).
(*) https://crascit.com/2018/09/14/do-not-redefine-cmake-commands/
- Uses a small assembly file to include binary resources, rather than
objcopy
- Updates `base/common/getResource.cpp` for this new method of inclusion
- Removes linux-only guards in CMake files, as this solution is
cross-platform.
The resulting binary resources are available in the ClickHouse server
binary on Linux, macOS, and illumos platforms. FreeBSD has not been
tested, but will likely work as well.
