From 3c134104442a4f520b62386e95f3c1e466cafe40 Mon Sep 17 00:00:00 2001
From: Andrej Antas <antasa@uol.cz>
Date: Mon, 27 Mar 2017 16:02:16 +0200
Subject: [PATCH] Replace table config with view for postgresql.conf

fixes #21
---
 Makefile              |  2 +-
 README.md             | 32 ++++++++++++++++++++++++++++++++
 sql/tables/tables.sql | 11 -----------
 sql/views/views.sql   |  3 +++
 4 files changed, 36 insertions(+), 12 deletions(-)
 delete mode 100644 sql/tables/tables.sql
 create mode 100644 sql/views/views.sql

diff --git a/Makefile b/Makefile
index 89885e2..da2d473 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ OBJS         = src/pg_amqp.o \
 
 all: sql/$(EXTENSION)--$(EXTVERSION).sql
 
-sql/$(EXTENSION)--$(EXTVERSION).sql: sql/tables/*.sql sql/functions/*.sql
+sql/$(EXTENSION)--$(EXTVERSION).sql: sql/views/*.sql sql/functions/*.sql
 	cat $^ > $@
 
 DATA = $(wildcard updates/*--*.sql) sql/$(EXTENSION)--$(EXTVERSION).sql
diff --git a/README.md b/README.md
index df42975..034a1f7 100644
--- a/README.md
+++ b/README.md
@@ -77,6 +77,38 @@ To update to the latest version, run the following command after running "make i
 
     ALTER EXTENSION amqp UPDATE;
 
+Setup
+-----
+
+Once you are all set, you can enter your credentials to `postgresql.conf`
+
+This file is under you local postgres installation, e.g. ubuntu PostgreSQL 9.6
+location may be: `/etc/postgresql/9.6/main/postgresql.conf`
+
+format of the data is as follows:
+
+```
+amqp.broker = '[{ "broker_id": 1, "host": "px8.uol.cz", "port": "5670",
+"vhost": "", "username": "expert", "password": "expert" }]'
+```
+
+This way you can enter how many configurations you want dividing your broker
+configuration with comma like this:
+
+```
+amqp.broker = '[{ "broker_id": 1, "host": "host.cz", "port": "5672",
+"vhost": "/", "username": "username", "password": "password" },
+{ "broker_id": 2, "host": "host.cz", "port": "5672",
+"vhost": "/", "username": "username", "password": "password" }]'
+```
+
+After changes in postgresql.conf you have to restart postgresql service, on
+ubunutu look like this:
+
+```
+service postgresql restart
+```
+
 Basic Usage
 -----------
 
diff --git a/sql/tables/tables.sql b/sql/tables/tables.sql
deleted file mode 100644
index 5edf6ff..0000000
--- a/sql/tables/tables.sql
+++ /dev/null
@@ -1,11 +0,0 @@
-CREATE TABLE @extschema@.broker (
-  broker_id serial NOT NULL,
-  host text NOT NULL,
-  port integer NOT NULL DEFAULT 5672,
-  vhost text,
-  username text,
-  password text,
-  PRIMARY KEY (broker_id, host, port)
-);
-
-
diff --git a/sql/views/views.sql b/sql/views/views.sql
new file mode 100644
index 0000000..12332ae
--- /dev/null
+++ b/sql/views/views.sql
@@ -0,0 +1,3 @@
+CREATE OR REPLACE VIEW @extschema@.broker AS
+select * from json_to_recordset(current_setting('amqp.broker')::json)
+as x(broker_id int, host text, port int, vhost text, username text, password text);