add PostgreSQL store option to package

nats-streaming-server/nats-streaming-server.conf

@@ -4,7 +4,7 @@
 
 id:                   "node1"
 
-store:                "file"
+store:                "@store@"
 dir:                  "@l_prefix@/var/nats-streaming-server/data/store"
 
 debug:                true
@@ -45,6 +45,13 @@ file {
     slice_max_age:    "24h"
 }
 
+sql {
+    driver:           "postgres"
+    source:           "postgresql://nats:nats@127.0.0.1:5432/nats?sslmode=disable"
+    no_caching:       true
+    max_open_conns:   16
+}
+
 # cluster {
 #     node_id:          "node1"
 #     peers:            [ "node2", "node3" ]

nats-streaming-server/nats-streaming-server.spec

@@ -36,16 +36,23 @@ Class:        EVAL
 Group:        Networking
 License:      Apache
 Version:      %{V_nats_streaming_server_base}.%{V_nats_streaming_server_snap}
-Release:      20180602
+Release:      20180603
+
+#   package options
+%option       with_pgsql  no
 
 #   list of sources
 Source0:      http://download.openpkg.org/components/versioned/nats/nats-streaming-server-%{V_nats_streaming_server_snap}.tar.xz
 Source1:      rc.nats-streaming-server
 Source2:      nats-streaming-server.conf
+Source3:      nats-streaming-server-setup.sh
 
 #   build information
 BuildPreReq:  OpenPKG, openpkg >= 20160101, go
 PreReq:       OpenPKG, openpkg >= 20160101, nats-server
+%if "%{with_pgsql}" == "yes"
+PreReq:       postgresql
+%endif
 
 %description
     NATS is an open source, lightweight, high-performance cloud native
@@ -84,6 +91,10 @@ PreReq:       OpenPKG, openpkg >= 20160101, nats-server
         $RPM_BUILD_ROOT%{l_prefix}/sbin \
         $RPM_BUILD_ROOT%{l_prefix}/etc/rc.d \
         $RPM_BUILD_ROOT%{l_prefix}/etc/nats-streaming-server \
+%if "%{with_pgsql}" == "yes"
+        $RPM_BUILD_ROOT%{l_prefix}/share/nats-streaming-server \
+        $RPM_BUILD_ROOT%{l_prefix}/var/nats-streaming-server/data/db \
+%endif
         $RPM_BUILD_ROOT%{l_prefix}/var/nats-streaming-server/data/store \
         $RPM_BUILD_ROOT%{l_prefix}/var/nats-streaming-server/data/raft \
         $RPM_BUILD_ROOT%{l_prefix}/var/nats-streaming-server/run \
@@ -96,13 +107,30 @@ PreReq:       OpenPKG, openpkg >= 20160101, nats-server
 
     #   install run-command script
     %{l_shtool} install -c -m 755 %{l_value -s -a} \
-        %{SOURCE rc.nats-streaming-server} $RPM_BUILD_ROOT%{l_prefix}/etc/rc.d/
+        %{SOURCE rc.nats-streaming-server} \
+        $RPM_BUILD_ROOT%{l_prefix}/etc/rc.d/
 
     #   install default configuration
+%if "%{with_pgsql}" == "yes"
+    store="sql"
+%else
+    store="file"
+%endif
     %{l_shtool} install -c -m 644 %{l_value -s -a} \
+        -e "s;@store@;$store;g" \
         %{SOURCE nats-streaming-server.conf} \
         $RPM_BUILD_ROOT%{l_prefix}/etc/nats-streaming-server/
 
+%if "%{with_pgsql}" == "yes"
+    #   install PostgreSQL schema definition and setup script
+    %{l_shtool} install -c -m 755 %{l_value -s -a} \
+        %{SOURCE nats-streaming-server-setup.sh} \
+        $RPM_BUILD_ROOT%{l_prefix}/sbin/nats-streaming-server-setup
+    %{l_shtool} install -c -m 644 %{l_value -s -a} \
+        src/github.com/nats-io/nats-streaming-server/postgres.db.sql \
+        $RPM_BUILD_ROOT%{l_prefix}/share/nats-streaming-server/postgresql.sql
+%endif
+
     #   determine installation files
     %{l_rpmtool} files -v -ofiles -r$RPM_BUILD_ROOT \
         %{l_files_std} \
@@ -115,6 +143,16 @@ PreReq:       OpenPKG, openpkg >= 20160101, nats-server
 %clean
 
 %post
+%if "%{with_pgsql}" == "yes"
+    if [ $1 -eq 1 ]; then
+        #   display final hints on initial installation
+        ( echo "To complete this installation of NATS Streaming Server with"
+          echo "PostgreSQL support, initialize the database like this:"
+          echo "    \$ $RPM_INSTALL_PREFIX/bin/openpkg rc postgresql start"
+          echo "    \$ $RPM_INSTALL_PREFIX/sbin/nats-streaming-server-setup install"
+        ) | %{l_rpmtool} msg -b -t notice
+    fi
+%endif
     if [ $1 -eq 2 ]; then
         #   after upgrade, restart service
         eval `%{l_rc} nats-streaming-server status 2>/dev/null`
@@ -126,7 +164,8 @@ PreReq:       OpenPKG, openpkg >= 20160101, nats-server
     if [ $1 -eq 0 ]; then
         #   before erase, stop service and remove log files
         %{l_rc} nats-streaming-server stop 2>/dev/null
-        rm -rf $RPM_INSTALL_PREFIX/var/nats-streaming-server/data/*/* >/dev/null 2>&1 || true
+        rm -rf $RPM_INSTALL_PREFIX/var/nats-streaming-server/data/store/* >/dev/null 2>&1 || true
+        rm -rf $RPM_INSTALL_PREFIX/var/nats-streaming-server/data/raft/*  >/dev/null 2>&1 || true
         rm -rf $RPM_INSTALL_PREFIX/var/nats-streaming-server/log/*        >/dev/null 2>&1 || true
         rm -rf $RPM_INSTALL_PREFIX/var/nats-streaming-server/run/*        >/dev/null 2>&1 || true
     fi