Create brep services controlling scripts

1 files changed, 143 insertions, 0 deletions

diff --git a/etc/pgctl b/etc/pgctl
new file mode 100755
index 0000000..26ad888
--- /dev/null
+++ b/etc/pgctl
@@ -0,0 +1,143 @@
+#!/bin/sh
+# file      : etc/pgctl
+# copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+#
+# Designed to simplify controlling brep PostgreSQL server instance.
+
+. `dirname $0`/config
+
+cmd="$1"
+
+# Print usage description and exit.
+#
+case $cmd in
+  init|start|stop|status|connect) ;;
+  *)
+    echo "Usage: pgctl (init|start|stop|status|connect)"
+    exit 1
+    ;;
+esac
+
+ERROR=0
+
+# Initilization includes creating PostgreSQL DB cluster, creating and
+# populating brep DB.
+#
+if test "$cmd" = "init"; then
+  if test -d "$PG_DATA_DIR"; then
+    echo "PostgreSQL DB cluster directory $PG_DATA_DIR already exist"
+  else
+    echo "creating PostgreSQL DB cluster ..."
+    pg_ctl initdb -D "$PG_DATA_DIR"
+    ERROR=$?
+
+    if test $ERROR -eq 0; then
+      echo "cluster created"
+    else
+      echo "cluster creating failed"
+      exit $ERROR;
+    fi
+  fi
+fi
+
+case $cmd in
+  start|init)
+    # Start DB server if not running yet.
+    #
+    pg_ctl status -D "$PG_DATA_DIR" 1>/dev/null 2>&1
+
+    if test $? -eq 0; then
+      echo "PostgreSQL server already running"
+    else
+      if test ! -d "$PG_DATA_DIR"; then
+        echo "PostgreSQL DB cluster not exist; run '$0 init' first"
+	exit 1
+      fi
+
+      echo "PostgreSQL server starting ..."
+
+      mkdir -p `dirname $PG_OUT_FILE`
+      mkdir -p "$PG_LOG_DIR"
+      mkdir -p "$PG_SOCKET_DIR"
+
+      pg_ctl start -D "$PG_DATA_DIR" -w -o \
+        "-c port=$PG_PORT -c unix_socket_directories=$PG_SOCKET_DIR \
+        -c logging_collector=on -c log_directory=$PG_LOG_DIR" \
+	1>"$PG_OUT_FILE" 2>&1
+
+      ERROR=$?
+
+      if test $ERROR -eq 0; then
+        echo "server started"
+      else
+        cat "$PG_OUT_FILE" 1>&2
+        echo "server starting failed"
+        exit $ERROR
+      fi
+    fi
+    ;;
+
+  status)
+    echo "checking PostgreSQL server status ..."
+    pg_ctl status -D "$PG_DATA_DIR"
+    ;;
+
+  stop)
+    pg_ctl status -D "$PG_DATA_DIR" 1>/dev/null 2>&1
+
+    if test $? -eq 0; then
+      echo "PostgreSQL server stopping ..."
+      pg_ctl stop -D "$PG_DATA_DIR"
+      ERROR=$?
+
+      if test $ERROR -eq 0; then
+        : # pg_ctl prints "server stopped" on success
+      else
+        echo "server stopping failed"
+        exit $ERROR
+      fi
+    else
+      echo "PostgreSQL server not running"
+    fi
+    ;;
+
+  connect)
+    echo "connecting to PostgreSQL server ..."
+    psql --host=$PG_SOCKET_DIR --port=$PG_PORT brep
+    ;;
+esac
+
+if test "$cmd" = "init"; then
+  # Create brep DB if not exist.
+  #
+  psql --host=$PG_SOCKET_DIR --port=$PG_PORT -c "" brep \
+	 1>>"$PG_OUT_FILE" 2>&1
+
+  ERROR=$?
+
+  if test $ERROR -eq 0; then
+    echo "brep DB already exist"
+  else
+    if test $ERROR -eq 2; then
+      echo "creating brep DB ..."
+      createdb --host=$PG_SOCKET_DIR --port=$PG_PORT brep
+      ERROR=$?
+
+      if test $ERROR -eq 0; then
+        echo "brep DB created"
+      else
+        echo "brep DB creating failed"
+        exit $ERROR;
+      fi
+    else
+      echo "brep DB existence checking failed"
+      exit $ERROR;
+    fi
+  fi
+
+  # Populate brep DB if required.
+  # psql --host=$PG_SOCKET_DIR --port=$PG_PORT -c "select count(1) ..." brep \
+  #	 1>>"$PG_OUT_FILE" 2>&1
+  # ...
+fi