chore(ci): run benchmarks for each storage in separate workers

.github/scripts/changed-modules.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+
+# How to test this script, run it with the required environment variables:
+# 1. A file from the .github is modified:
+#    ALL_CHANGED_FILES=".github/a.txt .github/b/c/d/a.yaml" ./.github/scripts/changed-modules.sh
+#    The output should be: all modules.
+#
+# 2. A file from a module in the modules dir is modified:
+#    ALL_CHANGED_FILES="arangodb/go.mod" ./.github/scripts/changed-modules.sh
+#    The output should be: just the arangodb module.
+#
+# 3. A file from two modules in the modules dir are modified:
+#    ALL_CHANGED_FILES="arangodb/go.mod redis/go.mod" ./.github/scripts/changed-modules.sh
+#    The output should be: the arangodb and redis modules.
+
+# ROOT_DIR is the root directory of the repository.
+readonly ROOT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)
+
+# modules is an array that will store the paths of all the modules in the repository.
+modules=()
+
+# Find all go.mod files in the repository, building a list of all the available modules.
+for modFile in $(find "${ROOT_DIR}" -name "go.mod" -not -path "${ROOT_DIR}/**/testdata/*"); do
+    modules+=("\"$(basename "$(dirname "${modFile}")")\"")
+done
+
+# sort modules array
+IFS=$'\n' modules=($(sort <<<"${modules[*]}"))
+unset IFS
+
+# merge all modules and examples into a single array
+allModules=("${modules[@]}")
+
+# sort allModules array
+IFS=$'\n' allModules=($(sort <<<"${allModules[*]}"))
+unset IFS
+
+# Get the list of modified files, retrieved from the environment variable ALL_CHANGED_FILES.
+# On CI, this value will come from a Github Action retrieving the list of modified files from the pull request.
+readonly modified_files=${ALL_CHANGED_FILES[@]}
+
+# Initialize variables
+modified_modules=()
+
+# Check the modified files and determine which modules to build, following these rules:
+# - if the modified files only contain files in one of the modules, include that module in the list
+# - if the modified files contain any other file, include all modules in the list
+for file in $modified_files; do
+    if [[ $file == .github/* ]]; then
+        modified_modules=${allModules[@]}
+        break
+    fi
+
+    module_name=$(echo $file | cut -d'/' -f1)
+    if [[ ! " ${modified_modules[@]} " =~ " ${module_name} " ]]; then
+        modified_modules+=("\"$module_name\"")
+    fi
+done
+
+# print all modules with this format:
+# each module will be enclosed in double quotes
+# each module will be separated by a comma
+# the entire list will be enclosed in square brackets
+echo "["$(IFS=,; echo "${modified_modules[*]}" | sed 's/ /,/g')"]"