47 lines
1.4 KiB
Smarty
Executable file
47 lines
1.4 KiB
Smarty
Executable file
#!/bin/bash
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set -e
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%{RUNFILES_PREFIX}
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EXECUTE_BINARY="$(rlocation "_main/$(basename "%{EXECUTE_PATH}")")"
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JQ="$(rlocation "databuild+/runtime/$(basename "%{JQ_PATH}")")"
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# First argument should be the path to a config file
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CONFIG_FILE=${1:-}
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# Create a temporary file for stdin if needed
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if [[ -z "$CONFIG_FILE" ]] || [[ "$CONFIG_FILE" == "-" ]]; then
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TMP_CONFIG=$(mktemp)
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cat > "$TMP_CONFIG"
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CONFIG_FILE="$TMP_CONFIG"
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trap 'rm -f "$TMP_CONFIG"' EXIT
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fi
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# Use jq to validate the config file
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# First check if the file starts with { and ends with }
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if [[ $(head -c 1 "$CONFIG_FILE") != "{" ]] || [[ $(tail -c 2 "$CONFIG_FILE" | head -c 1) != "}" ]]; then
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echo "The config file must be a non-empty JSON object:"
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cat $CONFIG_FILE
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exit 1
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fi
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# Then validate that it parses
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if ! $JQ 'type == "object"' $CONFIG_FILE > /dev/null 2>&1; then
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echo "The config file must be a non-empty JSON object:"
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cat $CONFIG_FILE
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exit 1
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fi
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# Should be a single JSON object
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# Extract and set environment variables from the config
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eval "$("$JQ" -r '.env | to_entries | .[] | "export " + .key + "=\"" + .value + "\""' "$CONFIG_FILE")"
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# Extract arguments from the config
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ARGS=()
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while IFS= read -r arg; do
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ARGS+=("$arg")
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done < <("$JQ" -r '.args[]' "$CONFIG_FILE")
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# Run the execution with both environment variables (already set) and arguments
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exec "$EXECUTE_BINARY" "${ARGS[@]}"
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