[ES-842] Added db_upgrade_scripts

Signed-off-by: Venkata Saidurga Polamraju <saidurgacsea@gmail.com>

db_upgrade_script/README.md

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+Directory contains sql scripts to be executed for DB migrations. upgrade and revoke scripts are named after the migrated version.

db_upgrade_script/mosip_mockidentitysystem/sql/0.9.0_to_0.9.1_rollback.sql

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+\echo 'Rollback Queries not required for transition from $CURRENT_VERSION to $UPGRADE_VERSION'

db_upgrade_script/mosip_mockidentitysystem/sql/0.9.0_to_0.9.1_upgrade.sql

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+\echo 'Upgrade Queries not required for transition from $CURRENT_VERSION to $UPGRADE_VERSION'

db_upgrade_script/mosip_mockidentitysystem/sql/0.9.1_to_0.9.2_rollback.sql

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+\echo 'Rollback Queries not required for transition from $CURRENT_VERSION to $UPGRADE_VERSION'

db_upgrade_script/mosip_mockidentitysystem/sql/0.9.1_to_0.9.2_upgrade.sql

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+\echo 'Upgrade Queries not required for transition from $CURRENT_VERSION to $UPGRADE_VERSION'

db_upgrade_script/mosip_mockidentitysystem/sql/0.9.2_to_0.9.3_rollback.sql

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+\echo 'Rollback Queries not required for transition from $CURRENT_VERSION to $UPGRADE_VERSION'

db_upgrade_script/mosip_mockidentitysystem/sql/0.9.2_to_0.9.3_upgrade.sql

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+\echo 'Upgrade Queries not required for transition from $CURRENT_VERSION to $UPGRADE_VERSION'

db_upgrade_script/mosip_mockidentitysystem/upgrade.properties

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+ACTION=upgrade
+MOSIP_DB_NAME=
+DB_SERVERIP=
+DB_PORT=
+SU_USER=postgres
+SU_USER_PWD=
+SYS_ADMIN_USER=
+SYS_ADMIN_PWD=
+DEFAULT_DB_NAME=postgres
+DBUSER_PWD=
+CURRENT_VERSION=
+UPGRADE_VERSION=

db_upgrade_script/mosip_mockidentitysystem/upgrade.sh

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+#!/bin/bash
+
+set -e
+properties_file="$1"
+echo `date "+%m/%d/%Y %H:%M:%S"` ": $properties_file"
+if [ -f "$properties_file" ]
+then
+     echo `date "+%m/%d/%Y %H:%M:%S"` ": Property file \"$properties_file\" found."
+    while IFS='=' read -r key value
+    do
+        key=$(echo $key | tr '.' '_')
+         eval ${key}=\${value}
+    done < "$properties_file"
+else
+     echo `date "+%m/%d/%Y %H:%M:%S"` ": Property file not found, Pass property file name as argument."
+fi
+
+echo "Current version: $CURRENT_VERSION"
+echo "UPGRADE version: $UPGRADE_VERSION"
+echo "Action: $ACTION"
+
+# Terminate existing connections
+echo "Terminating active connections"
+CONN=$(PGPASSWORD=$SU_USER_PWD psql -v ON_ERROR_STOP=1 --username=$SU_USER --host=$DB_SERVERIP --port=$DB_PORT --dbname=$DEFAULT_DB_NAME -t -c "SELECT count(pg_terminate_backend(pg_stat_activity.pid)) FROM pg_stat_activity WHERE datname = '$MOSIP_DB_NAME' AND pid <> pg_backend_pid()";exit;)
+echo "Terminated connections"
+
+# Execute upgrade or rollback
+if [ "$ACTION" == "upgrade" ]; then
+  echo "Upgrading database from $CURRENT_VERSION to $UPGRADE_VERSION"
+  UPGRADE_SCRIPT_FILE="sql/${CURRENT_VERSION}_to_${UPGRADE_VERSION}_upgrade.sql"
+  if [ -f "$UPGRADE_SCRIPT_FILE" ]; then
+    echo "Executing upgrade script $UPGRADE_SCRIPT_FILE"
+    PGPASSWORD=$SU_USER_PWD psql -v ON_ERROR_STOP=1 --username=$SU_USER --host=$DB_SERVERIP --port=$DB_PORT --dbname=$DEFAULT_DB_NAME -v primary_language_code=$PRIMARY_LANGUAGE_CODE -a -b -f $UPGRADE_SCRIPT_FILE
+  else
+    echo "Upgrade script not found, exiting."
+    exit 1
+  fi
+elif [ "$ACTION" == "rollback" ]; then
+  echo "Rolling back database for $CURRENT_VERSION to $UPGRADE_VERSION"
+  REVOKE_SCRIPT_FILE="sql/${CURRENT_VERSION}_to_${UPGRADE_VERSION}_rollback.sql"
+  if [ -f "$REVOKE_SCRIPT_FILE" ]; then
+    echo "Executing rollback script $REVOKE_SCRIPT_FILE"
+    PGPASSWORD=$SU_USER_PWD psql -v ON_ERROR_STOP=1 --username=$SU_USER --host=$DB_SERVERIP --port=$DB_PORT --dbname=$DEFAULT_DB_NAME -v primary_language_code=$PRIMARY_LANGUAGE_CODE -a -b -f $REVOKE_SCRIPT_FILE
+  else
+    echo "rollback script not found, exiting."
+    exit 1
+  fi
+else
+  echo "Unknown action: $ACTION, must be 'upgrade' or 'rollback'."
+  exit 1
+fi