feat: use RCDB to get the beam energy

.github/install-dependency-packages.sh

@@ -34,6 +34,8 @@ GENERAL_PACKAGE_LIST_LINUX=(
   openssl
   gsl
   davix
+  ### RCDB dependencies
+  mariadb
 )
 IGUANA_PACKAGE_LIST_LINUX=(
   fmt
@@ -56,6 +58,8 @@ GENERAL_PACKAGE_LIST_MACOS=(
   libxext
   openssl
   gsl
+  ### RCDB dependencies
+  mariadb
 )
 IGUANA_PACKAGE_LIST_MACOS=(
   fmt
@@ -139,6 +143,8 @@ case $runner in
     ### link homebrew's gcc, for gfortran
     brew unlink gcc
     brew link gcc
+    ### kluge ssl linker issue (see, e.g., https://github.com/brianmario/mysql2/issues/795)
+    echo "LIBRARY_PATH=${LIBRARY_PATH:+${LIBRARY_PATH}:}$(pkg-config libssl --variable libdir)" | tee -a $GITHUB_ENV
     ;;
 
   *)

.github/workflows/ci.yml

@@ -351,14 +351,28 @@ jobs:
       - name: set ROOT environment
         if: ${{ matrix.id != 'noROOT' }}
         run: iguana_src/.github/source-ROOT.sh root
+      ###### RCDB
+      - name: get RCDB
+        uses: actions/checkout@v4
+        with:
+          repository: JeffersonLab/rcdb
+          ref: main
+          path: rcdb_src
+      - name: set RCDB CI vars
+        id: rcdb
+        working-directory: rcdb_src
+        run: |
+          echo prefix=$(pwd) >> $GITHUB_OUTPUT
+          echo ver=$(git rev-parse HEAD) >> $GITHUB_OUTPUT
       ###### summarize dependencies
       - name: summarize dependencies
         if: ${{ matrix.id == 'cpp' }}
         run: |
           echo '### Dependencies' >> $GITHUB_STEP_SUMMARY
           echo '| Dependency | Version |' >> $GITHUB_STEP_SUMMARY
           echo '| --- | --- |' >> $GITHUB_STEP_SUMMARY
-          echo "| \`hipo\` | ${{ env.hipo_ref }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| \`hipo\` | \`${{ env.hipo_ref }}\` |" >> $GITHUB_STEP_SUMMARY
+          echo "| \`rcdb\` | \`${{ steps.rcdb.outputs.ver }}\` |" >> $GITHUB_STEP_SUMMARY
           echo "| \`root\` | $(root --version 2>&1 | head -n1) |" >> $GITHUB_STEP_SUMMARY
           echo "| \`ruby\` | $(ruby --version) |" >> $GITHUB_STEP_SUMMARY
           cat pkg_summary.md >> $GITHUB_STEP_SUMMARY
@@ -368,6 +382,8 @@ jobs:
           meson setup iguana_build iguana_src            \
             --prefix=$(pwd)/iguana                       \
             --pkg-config-path=$(pwd)/hipo/lib/pkgconfig  \
+            -Drcdb:home=${{ steps.rcdb.outputs.prefix }} \
+            -Dz_require_rcdb=true                        \
             -Dwerror=true                                \
             -Dinstall_examples=true                      \
             -Dtest_data_file=$(pwd)/test_data.hipo       \

doc/gen/meson.build

@@ -21,5 +21,5 @@ doc_tgt = custom_target(
   build_by_default: true,
   command: [ prog_doxygen, doxyfile ],
   install: true,
-  install_dir: join_paths(get_option('datadir'), 'doc', meson.project_name()),
+  install_dir: get_option('datadir') / 'doc' / meson.project_name(),
 )

doc/ifarm.md

@@ -5,7 +5,7 @@
 ```bash
 meson/resolve-dependencies.py --help  # prints the usage guide
 ```
-Use the `--env` option and set the resulting environment variables.
+Use the resulting arguments when setting up or configuring your build directory.
 
 ## Build and Install
 

doc/setup.md

@@ -70,6 +70,15 @@ cmake --install build-hipo
 - After installation, depending on ROOT's installation prefix you may also need to set your environment so
   ROOT may be found; this is typically done by `source /path/to/root/bin/thisroot.sh`
 
+### 🟩 Optional: `RCDB`: Run Condition Database
+<https://github.com/JeffersonLab/rcdb>
+- RCDB is optional, but needed for algorithms that use, _e.g._, the beam energy
+- You do not need to compile RCDB, just clone the repository
+- You may need to use the latest version on the main branch, rather than the most recent tag
+- Iguana uses `mysql` for RCDB; you may need to install `mariadb` or `mysql` client on your system
+  - [`mariadb` is an open source fork of `mysql`](https://mariadb.org/)
+  - depending on your OS's packages, you may need the "dev" version, _e.g._, `libmariadb-dev`
+
 <a name="building"></a>
 ## 🟠 Building and Installing
 
@@ -87,10 +96,9 @@ Use [`meson/resolve-dependencies.py`](../meson/resolve-dependencies.py) to help
 /path/to/iguana-source/meson/resolve-dependencies.py --help    # prints the usage guide
 ```
 Tell it where your dependencies are installed and it will tell you the build options
-that you need for Step 2; you can also choose to write those build options to an INI (native) file.
+that you need for Step 2.
 
-Alternatively, you may use environment variables; see the [note on dependency
-resolution](dependency_resolution.md) for more general guidance.
+See the [note on dependency resolution](dependency_resolution.md) for more general guidance.
 
 
 ### 🟩 Step 2: Generate a build directory
@@ -118,9 +126,11 @@ All build options, their current values, and their descriptions may be found by
 meson configure              # outputs in a pager (`less`); you may scroll, or press 'q' to quit
 meson configure --no-pager   # do not use a pager
 ```
-**but that's a _lot_ of text!** The _most important_ build options are near the bottom, under **"Project options"**.
+**but that's a _lot_ of text!** The _most important_ build options are under the **"Project options"**
+sections: the first such section is for `iguana`, and the rest are for subprojects (_e.g._, `rcdb`).
+
 To see _just_ the project options, run the following (which requires [`jq`](https://jqlang.github.io/jq/)):
-```
+```bash
 /path/to/iguana-source/meson/dump-build-options.sh .
 ```
 
@@ -130,6 +140,9 @@ meson configure -Dinstall_examples=true
 ```
 You can add as many `-D<option>=<value>` arguments as you need.
 
+> [!NOTE]
+> To set a subproject's option, you must prefix the subproject name. For example, for `rcdb`, use `-Drcdb:<option>=<value>`.
+
 ### 🟩 Step 4: Compile and Install
 Now compile and install Iguana:
 ```bash

examples/iguana_ex_fortran_01_action_functions.f

@@ -190,9 +190,10 @@ program iguana_ex_fortran_01_action_functions
 c       'key_vz_filter' must be passed to the action function;
         call iguana_clas12_zvertexfilter_prepareevent(
      &      algo_vz_filter, runnum(1), key_vz_filter)
-c       similarly for the inclusive kinematics algorithm
+c       similarly for the inclusive kinematics algorithm; use '-1'
+c       for the beam energy, so RCDB is used to get the energy
         call iguana_physics_inclusivekinematics_prepareevent(
-     &      algo_inc_kin, runnum(1), key_inc_kin)
+     &      algo_inc_kin, runnum(1), -1, key_inc_kin)
 
 c       call iguana filters
 c       - the `logical` variable `accept` must be initialized to

meson.build

@@ -10,6 +10,7 @@ project(
     'libdir': 'lib',
     'licensedir': 'share/licenses/iguana',
     'pkgconfig.relocatable': 'true',
+    'force_fallback_for': ['rcdb'],
   },
   version: run_command(
     meson.project_source_root() / 'meson' / 'detect-version.sh',
@@ -27,6 +28,9 @@ use_chameleon = get_option('bind_fortran')
 pkg = import('pkgconfig')
 fs = import('fs')
 
+# build subprojects
+rcdb_subproj = subproject('rcdb', required: get_option('z_require_rcdb'))
+
 # resolve dependencies
 prog_minver = find_program('meson' / 'minimum-version.sh')
 # NOTE: those that are typically installed by package managers should use `meson/minimum-version.sh`
@@ -56,13 +60,23 @@ prog_ruby = find_program(
   version: '>=' + run_command(prog_minver, 'ruby', check: true).stdout().strip(),
   required: use_chameleon,
 )
+rcdb_dep = dependency(
+  'rcdb',
+  fallback: ['rcdb', 'rcdb_dep'],
+  required: get_option('z_require_rcdb'),
+)
+thread_dep = dependency(
+  'threads',
+  required: true, # FIXME: actually, it's only needed for multi-threading tests/examples
+)
 
 # list of dependencies
 # FIXME: for users which use LD_LIBRARY_PATH, we should try to keep this list
 # ordered such that the ones users are *least likely* to try to build
 # themselves are listed last (see FIXME in meson/this_iguana.sh.in)
+# NOTE: omit ROOT (handled differently, and most ROOT users already have it in their environment)
 dep_list = []
-foreach dep : [ hipo_dep, fmt_dep, yamlcpp_dep, ROOT_dep ]
+foreach dep : [ hipo_dep, fmt_dep, yamlcpp_dep, rcdb_dep ]
   if dep.found()
     dep_list += dep
   endif
@@ -75,9 +89,6 @@ dep_pkgconfig_dirs = []
 foreach dep : dep_list
 
   # get library and include dirs
-  if dep.name() == 'ROOT'
-    continue # skip ROOT (handled differently, and most ROOT users already have it in their environment)
-  endif
   if dep.type_name() == 'pkgconfig'
     libdirs = [ dep.get_variable(pkgconfig: 'libdir') ]
     incdirs = [ dep.get_variable(pkgconfig: 'includedir') ]
@@ -88,7 +99,13 @@ foreach dep : dep_list
     endforeach
     incdirs = ROOT_dep.get_variable(cmake: 'PACKAGE_INCLUDE_DIRS').split(';')
   else
-    error('Cannot determine how dependency "' + dep.name() + '" was found')
+    name = dep.get_variable(internal: 'name', default_value: dep.name())
+    if name == 'rcdb'
+      incdirs = [ dep.get_variable(internal: 'includedir') ]
+    else
+      warning(f'Unknown dependency "@name@"')
+      continue
+    endif
   endif
 
   # append to `dep_*_dirs` arrays, uniquely
@@ -148,7 +165,7 @@ endif
 # general project vars
 project_inc = include_directories('src')
 project_libs = []
-project_deps = declare_dependency(dependencies: [ fmt_dep, yamlcpp_dep, hipo_dep ]) # do NOT include ROOT here
+project_deps = declare_dependency(dependencies: dep_list) # do NOT include ROOT here
 project_etc = get_option('sysconfdir') / meson.project_name()
 project_test_env = environment()
 project_pkg_vars = [

meson.options

@@ -16,3 +16,4 @@ option('test_multithreading',      type: 'integer', value: 4, min: 0, descriptio
 # expert options: the defaults should be reasonable for a local installation; different values may be preferred for installation in common areas
 option('z_install_envfile',     type: 'boolean', value: true,  description: 'Install a sourceable environment variable file')
 option('z_require_root',        type: 'boolean', value: false, description: 'Fail if ROOT is not found')
+option('z_require_rcdb',        type: 'boolean', value: false, description: 'Fail if RCDB is not found')

meson/release/install-cvmfs.sh

@@ -70,6 +70,7 @@ msg "meson setup"
 meson setup $buildDir $sourceDir \
   --native-file=$nativeFile      \
   --prefix=$installDir           \
+  -Drcdb:home=$RCDB_HOME         \
   -Dtest_data_file=$testFile
 msg "meson install"
 meson install -C $buildDir

meson/resolve-dependencies.py

@@ -22,21 +22,20 @@ class Formatter(argparse.ArgumentDefaultsHelpFormatter, argparse.RawDescriptionH
 parser_deps.add_argument('--fmt', default=SYSTEM_ASSUMPTION, type=str, help='path to `fmt` installation')
 parser_deps.add_argument('--yaml', default=SYSTEM_ASSUMPTION, type=str, help='path to `yaml-cpp` installation')
 parser_deps.add_argument('--root', default=SYSTEM_ASSUMPTION, type=str, help='path to `ROOT` installation')
+parser_deps.add_argument('--rcdb', default='$RCDB_HOME', type=str, help='path to `RCDB` installation')
 parser_output = parser.add_argument_group('output control')
-parser_output.add_argument('--cli', default=False, action=argparse.BooleanOptionalAction, help='only print the `meson` CLI options, and nothing else')
-parser_output.add_argument('--env', default=False, action=argparse.BooleanOptionalAction, help='generate environment variable `export` commands instead')
-parser_output.add_argument('--ini', default=NOT_USED, type=str, help='if set, generate an INI file (meson native file) with this name; you may then use it with `meson setup --native-file=_____`')
+parser_output.add_argument('--verbose', default=False, action=argparse.BooleanOptionalAction, help='verbose output')
 args = parser.parse_args()
 
 # verbosity
-verbose = not args.cli
 def print_verbose(message):
-    if(verbose):
+    if(args.verbose):
         print(message)
 
 # functions to set dependency paths
 pkg_config_path   = set()
 cmake_prefix_path = set()
+extra_args        = []
 def use_system(dep):
     print_verbose(f'{dep}: {SYSTEM_ASSUMPTION}')
 def use_pkg_config(dep, pc_file, arg):
@@ -63,71 +62,49 @@ def use_cmake(dep, arg):
         cmake_prefix_path.add(path)
     else:
         use_system(dep)
+def use_env_var(dep, build_var_name, user_val, env_var_name):
+    if(user_val == f'${env_var_name}'):
+        if env_var_name in os.environ:
+            print_verbose(f'{dep}: using environment variable "{env_var_name}" for build variable "{build_var_name}"')
+            extra_args.append([build_var_name, os.environ[env_var_name]])
+        else:
+            print(f'{dep}: you did not specify where {dep} is found, and the fallback environment variable "${env_var_name}" is not set; {dep} will be ignored', file=sys.stderr)
+    else:
+        print_verbose(f'{dep}: using user value "{user_val}" for build variable "{build_var_name}"')
+        extra_args.append([build_var_name, user_val])
 
 # resolve dependencies #########################
 use_pkg_config('hipo', 'hipo4.pc',    args.hipo)
 use_pkg_config('fmt',  'fmt.pc',      args.fmt)
 use_pkg_config('yaml', 'yaml-cpp.pc', args.yaml)
 use_cmake('ROOT', args.root)
+use_env_var('rcdb', 'rcdb:home', args.rcdb, 'RCDB_HOME')
 ################################################
 
 
-# generate a native file
-if(args.ini!=NOT_USED):
-    def ini_string_arr(arr):
-        contents = ','.join(map(lambda s: f'\'{s}\'', arr))
-        return f'[{contents}]'
-    ini_config = ConfigParser(allow_no_value=True)
-    ini_config.add_section('built-in options')
-    if(len(cmake_prefix_path) > 0):
-        ini_config.set('built-in options', 'cmake_prefix_path', ini_string_arr(cmake_prefix_path))
-    if(len(pkg_config_path) > 0):
-        ini_config.set('built-in options', 'pkg_config_path', ini_string_arr(pkg_config_path))
-    with open(args.ini, 'w') as fp:
-        ini_config.write(fp)
-
 # generate CLI options
-if(verbose or args.cli):
-    if(len(pkg_config_path)==0 and len(cmake_prefix_path)==0):
-        print_verbose(textwrap.dedent(f'''
-        ==========================================================================================
-        All of your dependencies are assumed to be in the system default locations.
-        - If they are not, please run:
-            {sys.argv[0]} --help
-        - Otherwise, you do not need to set or modify any build options for dependency resolution.
-        ==========================================================================================
-        '''))
-        exit(0)
-    else:
-        if(args.env):
-            print_verbose(textwrap.dedent('''
-            ==================================================
-            |  Here are the environment variables you need:  |
-            ==================================================
-            '''))
-        else:
-            print_verbose(textwrap.dedent('''
-            ===============================================
-            |  Here are the build options that you need:  |
-            ===============================================
-            '''))
-        cli_opts = []
-        if(len(pkg_config_path) > 0):
-            if(args.env):
-                cli_opts.append(f'export PKG_CONFIG_PATH={":".join(pkg_config_path)}' + '${PKG_CONFIG_PATH:+:${PKG_CONFIG_PATH}}')
-            else:
-                cli_opts.append(f'--pkg-config-path={",".join(pkg_config_path)}')
-        if(len(cmake_prefix_path) > 0):
-            if(args.env):
-                cli_opts.append(f'export CMAKE_PREFIX_PATH={":".join(cmake_prefix_path)}' + '${CMAKE_PREFIX_PATH:+:${CMAKE_PREFIX_PATH}}')
-            else:
-                cli_opts.append(f'--cmake-prefix-path={",".join(cmake_prefix_path)}')
-        if(args.ini==NOT_USED):
-            if(args.env):
-                for cli_opt in cli_opts:
-                    print(cli_opt)
-            else:
-                print(f'{" ".join(cli_opts)}')
-        else:
-            print(f'--native-file={args.ini}')
-        print_verbose('\n')
+if(len(pkg_config_path)==0 and len(cmake_prefix_path)==0 and len(extra_args)==0):
+    print_verbose(textwrap.dedent(f'''
+    ==========================================================================================
+    All of your dependencies are assumed to be in the system default locations.
+    - If they are not, please run:
+        {sys.argv[0]} --help
+    - Otherwise, you do not need to set or modify any build options for dependency resolution.
+    ==========================================================================================
+    '''))
+else:
+    print_verbose(textwrap.dedent('''
+    ===============================================
+    |  Here are the build options that you need:  |
+    ===============================================
+    '''))
+    cli_opts = []
+    if(len(pkg_config_path) > 0):
+        cli_opts.append(f'--pkg-config-path={",".join(pkg_config_path)}')
+    if(len(cmake_prefix_path) > 0):
+        cli_opts.append(f'--cmake-prefix-path={",".join(cmake_prefix_path)}')
+    if(len(extra_args) > 0):
+        for extra_arg in extra_args:
+            cli_opts.append(f'-D{extra_arg[0]}={extra_arg[1]}')
+    print(f'{" ".join(cli_opts)}')
+    print_verbose('\n')

src/iguana/algorithms/meson.build

@@ -134,8 +134,6 @@ foreach algo : algo_dict
         ],
       )
       algo_bind_c_sources += tgt[0]
-    else
-      warning('Algorithm "' + algo_name + '" has no bindings')
     endif
 
   else
@@ -154,8 +152,6 @@ foreach algo : algo_dict
         vdor_headers += algo_dir / src_file
       endforeach
     endif
-  else
-    warning('Algorithm "' + algo_name + '" has no validator')
   endif
 
 endforeach

src/iguana/algorithms/physics/InclusiveKinematics/Action.yaml

@@ -7,6 +7,8 @@ actions:
     inputs:
       - name: runnum
         type: int
+      - name: beam_energy
+        type: double
     outputs:
       - type: concurrent_key_t
         cast: int