55 lines
2.3 KiB
Bash
Executable File
55 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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function error_handler() {
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echo >&2 "Exited with BAD EXIT CODE '${2}' in ${0} script at line: ${1}."
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exit "$2"
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}
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trap 'error_handler ${LINENO} $?' ERR
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set -o errtrace -o errexit -o nounset -o pipefail
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# sort of like https://lithic.tech/blog/2020-05/react-dynamic-config, but without golang
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react_configs=$(env | grep -E "^SPIFFWORKFLOW_FRONTEND_RUNTIME_CONFIG_" || echo '')
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if [[ -n "$react_configs" ]]; then
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index_html_file="/usr/share/nginx/html/index.html"
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if [[ ! -f "$index_html_file" ]]; then
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echo >&2 "ERROR: Could not find '${index_html_file}'. Cannot use SPIFFWORKFLOW_FRONTEND_RUNTIME_CONFIG values without it."
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exit 1
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fi
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if ! command -v sed >/dev/null; then
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echo >&2 "ERROR: sed command not found. Cannot use SPIFFWORKFLOW_FRONTEND_RUNTIME_CONFIG values without it."
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exit 1
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fi
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if ! command -v perl >/dev/null; then
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echo >&2 "ERROR: perl command not found. Cannot use SPIFFWORKFLOW_FRONTEND_RUNTIME_CONFIG values without it."
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exit 1
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fi
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for react_config in $react_configs; do
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react_config_without_prefix=$(sed -E 's/^SPIFFWORKFLOW_FRONTEND_RUNTIME_CONFIG_([^=]*)=(.*)/\1=\\"\2\\"/' <<<"${react_config}")
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if [[ -z "$react_config_without_prefix" ]]; then
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echo >&2 "ERROR: Could not parse react config line: '${react_config}'."
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exit 1
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fi
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escaped_react_config=$(sed -E 's|/|\\/|g' <<<"${react_config_without_prefix}")
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# actually do the search and replace to add the js config to the html page
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perl -pi -e "s/(window.spiffworkflowFrontendJsenv *= *\{\})/\1;window.spiffworkflowFrontendJsenv.${escaped_react_config}/" "$index_html_file"
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if ! grep -Eq "${react_config_without_prefix}" "$index_html_file"; then
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echo >&2 "ERROR: Could not find '${react_config_without_prefix}' in '${index_html_file}' after search and replace. It is likely that the assumptions in boot_server_in_docker about the contents of the html page have changed. Fix the glitch in boot_server_in_docker."
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exit 1
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fi
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done
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fi
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port_to_use="${PORT0:-80}"
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if [[ -n "${SPIFFWORKFLOW_FRONTEND_INTERNAL_PORT:-}" ]]; then
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port_to_use="$SPIFFWORKFLOW_FRONTEND_INTERNAL_PORT"
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fi
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perl -p -e "s/{{SPIFFWORKFLOW_FRONTEND_INTERNAL_PORT}}/${port_to_use}/" /var/tmp/nginx.conf.template >/etc/nginx/conf.d/default.conf
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exec nginx -g "daemon off;"
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