rework database handling

Docker/liberate.sh

@@ -32,7 +32,7 @@ init_config_file() {
     cp ${FULLPATH} ${LIBATION_CONFIG_INTERNAL}/
     return 0
   else
-    warn "${FULLPATH} not found, using defaults"
+    warn "${FULLPATH} not found, creating empty file"
     echo "{}" > ${LIBATION_CONFIG_INTERNAL}/${FILE}
     return 1
   fi
@@ -63,7 +63,6 @@ create_db() {
     warn "prexisting database found when creating"
     return 0
   else
-    warn "database not found, creating one at ${DBFILE}"
     if ! touch "${DBFILE}"; then
       error "unable to create database, check permissions on host"
       exit 1
@@ -72,6 +71,46 @@ create_db() {
   fi
 }
 
+setup_db() {
+  DBPATH=$1
+  dbpattern="*.db"
+
+  debug "using database directory ${DBPATH}"
+
+  # Figure out the right databse file
+  if [[ -z "${LIBATION_DB_FILE}" ]];
+  then
+    dbCount=$(find "${DBPATH}" -type f -name "${dbpattern}" | wc -l)
+    if [ "${dbCount}" -gt 1 ];
+    then
+      error "too many database files found, set LIBATION_DB_FILE to the filename you wish to use"
+      exit 1
+    elif [ "${dbCount}" -eq 1 ];
+    then
+      files=( ${DBPATH}/${dbpattern} )
+      FILE=${files[0]}
+    else
+      FILE="${DBPATH}/LibationContext.db"
+    fi
+  else
+    FILE="${DBPATH}/${LIBATION_DB_FILE}"
+  fi
+
+  debug "planning to use database ${FILE}"
+
+  if [ -f "${FILE}" ]; then
+    info "database found at ${FILE}"
+  elif [ ${LIBATION_CREATE_DB} = "true" ];
+  then
+    warn "database not found, creating one at ${FILE}"
+    create_db ${FILE}
+  else
+    error "database not found and creation is disabled"
+    exit 1
+  fi
+  ln -s "${FILE}" "${LIBATION_CONFIG_INTERNAL}/LibationContext.db"
+}
+
 run() {
   info "scanning accounts"
   /libation/LibationCli scan
@@ -89,27 +128,15 @@ main() {
   update_settings Settings.json InProgress /tmp
 
   info "loading database"
-  FILE=LibationContext.db
   # If user provides a separate database mount, use that
   if is_mounted "${LIBATION_DB_DIR}";
   then
-    debug "using database directory ${LIBATION_DB_DIR}"
-    if [ -f "${LIBATION_DB_DIR}/${FILE}" ]; then
-      info "database found in ${LIBATION_DB_DIR}"
-    else
-      create_db ${LIBATION_DB_DIR}/${FILE}
-    fi
-    ln -s /${LIBATION_DB_DIR}/${FILE} ${LIBATION_CONFIG_INTERNAL}/${FILE}
+    DB_LOCATION=${LIBATION_DB_DIR}
   # Otherwise, use the config directory
   else
-    debug "using config directory ${LIBATION_CONFIG_DIR}"
-    if [ -f "${LIBATION_CONFIG_DIR}/${FILE}" ]; then
-      info "database found in ${LIBATION_CONFIG_DIR}"
-    else
-      create_db ${LIBATION_CONFIG_DIR}/${FILE}
-    fi
-    ln -s /${LIBATION_CONFIG_DIR}/${FILE} ${LIBATION_CONFIG_INTERNAL}/${FILE}
+    DB_LOCATION=${LIBATION_CONFIG_DIR}
   fi
+  setup_db ${DB_LOCATION}
 
   # Try to warn if books dir wasn't mounted in
   if ! is_mounted "${LIBATION_BOOKS_DIR}";
@@ -122,7 +149,7 @@ main() {
     SLEEP_TIME=-1
   fi
 
-  if [ "${SLEEP_TIME}" = -1 ]; then
+  if [ "${SLEEP_TIME}" -eq -1 ]; then
     info "running once"
   else
     info "running every ${SLEEP_TIME}"
@@ -134,7 +161,7 @@ main() {
     run
     
     # Liberate only once if SLEEP_TIME was set to -1
-    if [ "${SLEEP_TIME}" = -1 ]; then
+    if [ "${SLEEP_TIME}" -eq -1 ]; then
       break  
     fi
 

Dockerfile

@@ -22,8 +22,11 @@ ENV SLEEP_TIME=-1
 ENV LIBATION_CONFIG_INTERNAL=/config-internal
 ENV LIBATION_CONFIG_DIR=/config
 ENV LIBATION_DB_DIR=/db
+ENV LIBATION_DB_FILE=
+ENV LIBATION_CREATE_DB=true
 ENV LIBATION_BOOKS_DIR=/data
 
+
 RUN apt-get update && apt-get -y upgrade && \
     apt-get install -y jq && \
     mkdir -m777 ${LIBATION_CONFIG_INTERNAL} ${LIBATION_BOOKS_DIR}