entrypoint.sh

#!/bin/sh

##################################################################
# Check for required environment variables                       #
# In case they are not set, use default config.json file instead #
##################################################################

if [ -z "${ENDPOINT_URL}" ]; then
  echo "ENDPOINT_URL is not set, let's keep the current config.json file."
  exit 0
fi

#########################################################
# Set default values for optional environment variables #
#########################################################

if [ -z "${SPARQL_CONSOLE_URL}" ]; then
  echo "SPARQL_CONSOLE_URL is not set, let's use 'http://example.com/sparql/#query' as default value."
  SPARQL_CONSOLE_URL="http://example.com/sparql/#query"
fi

if [ -z "${GRAPH_EXPLORER_URL}" ]; then
  echo "GRAPH_EXPLORER_URL is not set, let's use 'http://example.com/graph-explorer/?resource' as default value."
  GRAPH_EXPLORER_URL="http://example.com/graph-explorer/?resource"
fi

if [ -z "${FULL_TEXT_SEARCH_DIALECT}" ]; then
  echo "FULL_TEXT_SEARCH_DIALECT is not set, let's use 'fuseki' as default value."
  FULL_TEXT_SEARCH_DIALECT="fuseki"
fi

if [ -z "${NEPTUNE_FTS_ENDPOINT}" ]; then
  # Check if the full-text search endpoint is set to "neptune", and only display the warning message in this case
  if [ "${FULL_TEXT_SEARCH_DIALECT}" = "neptune" ]; then
    echo "NEPTUNE_FTS_ENDPOINT is not set, let's use 'http://example.com/' as default value."
  fi
  NEPTUNE_FTS_ENDPOINT="http://example.com/"
fi

########################################################
# Generate config.json file from environment variables #
########################################################

echo "Generating config.json file with the following values:"
echo "- ENDPOINT_URL: ${ENDPOINT_URL}"
echo "- SPARQL_CONSOLE_URL: ${SPARQL_CONSOLE_URL}"
echo "- GRAPH_EXPLORER_URL: ${GRAPH_EXPLORER_URL}"
echo "- FULL_TEXT_SEARCH_DIALECT: ${FULL_TEXT_SEARCH_DIALECT}"
echo "- NEPTUNE_FTS_ENDPOINT: ${NEPTUNE_FTS_ENDPOINT}"

jq -n \
  --arg endpointUrl "${ENDPOINT_URL}" \
  --arg sparqlConsoleUrl "${SPARQL_CONSOLE_URL}" \
  --arg graphExplorerUrl "${GRAPH_EXPLORER_URL}" \
  --arg fullTextSearchDialect "${FULL_TEXT_SEARCH_DIALECT}" \
  --arg ftsEndpoint "${NEPTUNE_FTS_ENDPOINT}" \
  '{
    "endpointUrl": $endpointUrl,
    "sparqlConsoleUrl": $sparqlConsoleUrl,
    "graphExplorerUrl": $graphExplorerUrl,
    "fullTextSearchDialect": $fullTextSearchDialect,
    "neptune": {
      "ftsEndpoint": $ftsEndpoint
    }
  }' > /app/config.json

exit 0