* Split script for switching DBs

Author: Dmitriy "DK" Korobskiy

Neo4j/neo4j_load.sh

@@ -22,8 +22,8 @@ set -xe
 set -o pipefail
 
 # Get a script directory, same as by $(dirname $0)
-#script_dir=${0%/*}
-#absolute_script_dir=$(cd "${script_dir}" && pwd)
+script_dir=${0%/*}
+absolute_script_dir=$(cd "${script_dir}" && pwd)
 #work_dir=${1:-${absolute_script_dir}/build} # $1 with the default
 #if [[ ! -d "${work_dir}" ]]; then
 #  mkdir "${work_dir}"
@@ -32,10 +32,10 @@ set -o pipefail
 #cd "${work_dir}"
 echo -e "\n## Running under ${USER}@${HOSTNAME} at ${PWD} ##\n"
 
-#if ! which cypher-shell >/dev/null; then
-#  echo "Please install Neo4j"
-#  exit 1
-#fi
+if ! which cypher-shell >/dev/null; then
+  echo "Please install Neo4j"
+  exit 1
+fi
 
 nodes_file="$1"
 edges_file="$2"
@@ -63,22 +63,9 @@ set +x
 # `java.io.FileNotFoundException: import.report (Permission denied)` error
 echo "$3" | sudo --stdin -u neo4j bash -c "set -xe
   echo 'Loading data into ${db_name} ...'
-  neo4j-admin import --nodes:Publication '${nodes_file}' --relationships:CITES '${edges_file}' --database="${db_name}"
-  sed --in-place --expression='s/dbms.active_database=.*/dbms.active_database=${db_name}/' /etc/neo4j/neo4j.conf"
-
-echo "Restarting Neo4j with a new active database ..."
-echo "$3" | sudo --stdin systemctl restart neo4j
-
-declare -i time_limit_s=30
-echo "Waiting for the service to become active up to ${time_limit_s} seconds ..."
-# Ping Neo4j. Even if a service is active it might not be responding yet.
-while ! cypher-shell "CALL dbms.components()" 2>/dev/null; do
-  if ((time_limit_s-- == 0)); then
-    echo "ERROR: Neo4j failed to start." >&2
-    exit 2
-  fi
-  sleep 1
-done
+  neo4j-admin import --nodes:Publication '${nodes_file}' --relationships:CITES '${edges_file}' --database='${db_name}'"
+
+${absolute_script_dir}/neo4j_switch_db.sh "${db_name}" "$3"
 set -x
 # endregion
 

Neo4j/neo4j_switch_db.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+if [[ $1 == "-h" || $# -lt 1 ]]; then
+  cat <<'HEREDOC'
+NAME
+  neo4j_switch_db.sh -- switches Neo4j active DB and restarts Neo4j
+
+SYNOPSIS
+  neo4j_load.sh neo4j_db current_user_password
+  neo4j_load.sh -h: display this help
+
+DESCRIPTION
+  # See available DBs in `/var/lib/neo4j/data/databases`
+  # Current user must be a sudoer
+HEREDOC
+  exit 1
+fi
+
+set -xe
+set -o pipefail
+
+# Get a script directory, same as by $(dirname $0)
+#script_dir=${0%/*}
+#absolute_script_dir=$(cd "${script_dir}" && pwd)
+#work_dir=${1:-${absolute_script_dir}/build} # $1 with the default
+#if [[ ! -d "${work_dir}" ]]; then
+#  mkdir "${work_dir}"
+#  chmod g+w "${work_dir}"
+#fi
+#cd "${work_dir}"
+echo -e "\n## Running under ${USER}@${HOSTNAME} at ${PWD} ##\n"
+
+if ! which cypher-shell >/dev/null; then
+  echo "Please install Neo4j"
+  exit 1
+fi
+
+db_name="$1"
+
+# region Hide password from the output
+set +x
+echo "$3" | sudo --stdin -u neo4j bash -c "set -xe
+  sed --in-place --expression='s/dbms.active_database=.*/dbms.active_database=${db_name}/' /etc/neo4j/neo4j.conf"
+
+echo "Restarting Neo4j with a new active database ..."
+echo "$3" | sudo --stdin systemctl restart neo4j
+
+declare -i time_limit_s=30
+echo "Waiting for the service to become active up to ${time_limit_s} seconds ..."
+# Ping Neo4j. Even if a service is active it might not be responding yet.
+while ! cypher-shell "CALL dbms.components()" 2>/dev/null; do
+  if ((time_limit_s-- == 0)); then
+    echo "ERROR: Neo4j failed to start." >&2
+    exit 2
+  fi
+  sleep 1
+done
+set -x
+# endregion