Making call to Rest services in mule ESB - mule

Question

I have made a web app which call mule server which is listening to http inbound point at 8081 for accessing the database.I am accessing the database successfully and getting a message. But I want to access the other rest services after I get the object from the database and run some operations.
I don't know how to achieve this.
Please give me example. I am posting my flow.
<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns:json="http://www.mulesoft.org/schema/mule/json" xmlns:jms="http://www.mulesoft.org/schema/mule/jms" xmlns:jersey="http://www.mulesoft.org/schema/mule/jersey" xmlns:db="http://www.mulesoft.org/schema/mule/db" xmlns:tracking="http://www.mulesoft.org/schema/mule/ee/tracking" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans" version="EE-3.5.1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
http://www.mulesoft.org/schema/mule/ee/tracking http://www.mulesoft.org/schema/mule/ee/tracking/current/mule-tracking-ee.xsd
http://www.mulesoft.org/schema/mule/db http://www.mulesoft.org/schema/mule/db/current/mule-db.xsd
http://www.mulesoft.org/schema/mule/jersey http://www.mulesoft.org/schema/mule/jersey/current/mule-jersey.xsd
http://www.mulesoft.org/schema/mule/jms http://www.mulesoft.org/schema/mule/jms/current/mule-jms.xsd
http://www.mulesoft.org/schema/mule/json http://www.mulesoft.org/schema/mule/json/current/mule-json.xsd">
<http:endpoint exchange-pattern="request-response" host="localhost" port="8081" method="POST" name="HTTP" doc:name="HTTP"/>
<db:mysql-config name="MySQL_Configuration" host="localhost" port="3306" user="root" password="123456" database="Customer" doc:name="MySQL Configuration"/>
<flow name="muleesbintegrationFlow1" doc:name="muleesbintegrationFlow1">
<http:inbound-endpoint exchange-pattern="request-response" path="crud" doc:name="HTTP" ref="HTTP"/>
<set-session-variable variableName="input" value="#[message.inboundProperties.'http.query.params'.input]" doc:name="input"/>
<set-session-variable variableName="cid" value="#[message.inboundProperties.'http.query.params'.cid]" doc:name="cid"/>
<set-session-variable variableName="fname" value="#[message.inboundProperties.'http.query.params'.fname]" doc:name="fname"/>
<set-session-variable variableName="lname" value="#[message.inboundProperties.'http.query.params'.fname]" doc:name="lname"/>
<choice doc:name="ChoicerOfCrud">
<when expression="#[sessionVars['input']== "insert"]">
<db:insert config-ref="MySQL_Configuration" doc:name="insert">
<db:parameterized-query><![CDATA[INSERT INTO `Customer`.`customer` (`customer_id`, `fname`, `lname`) VALUES (#[sessionVars['cid']], #[sessionVars['fname']], #[sessionVars['lname']]);]]></db:parameterized-query>
</db:insert>
</when>
<when expression="#[sessionVars['input']]=="update"]">
<db:update config-ref="MySQL_Configuration" doc:name="update">
<db:parameterized-query><![CDATA[UPDATE `Customer`.`customer` set
fname = #[sessionVars['fname']],
lname= #[sessionVars['lname']]
where customer_id = #[sessionVars['cid']];]]></db:parameterized-query>
</db:update>
</when>
<when expression="#[sessionVars['input']=="select"]">
<db:select config-ref="MySQL_Configuration" doc:name="selected">
<db:parameterized-query><![CDATA[SELECT * FROM Customer.customer where customer_id =#[sessionVars['cid']];]]></db:parameterized-query>
</db:select>
</when>
<otherwise>
<db:delete config-ref="MySQL_Configuration" doc:name="delete">
<db:dynamic-query><![CDATA[DELETE FROM `Customer`.`customer` WHERE `customer_id`=#[sessionVars['cid']];]]></db:dynamic-query>
</db:delete>
</otherwise>
</choice>
</flow>
</mule>

Answer 1

I recommend to use http:outbound-endpoint to consume a REST service (GET,POST, PUT or DELETE). In this example you can see a flow to invoke a services GET:
<flow name="invoke-ws" doc:name="invoke-ws">
<vm:inbound-endpoint exchange-pattern="request-response" path="vm-ws" doc:name="VM"/>
<logger message="payload is: #[payload]" level="INFO" doc:name="Logger"/>
<http:outbound-endpoint exchange-pattern="request-response" method="GET" address="http://ip:port/service/#[payload]" doc:name="HTTP">
<set-property propertyName="Accept" value="application/json"/>
</http:outbound-endpoint>
<byte-array-to-string-transformer doc:name="Byte Array to String"/>
<logger message="payload is: #[payload]" level="INFO" doc:name="Logger"/>
</flow>
If the service is SOAP over HTTP, I recommend using http://www.mulesoft.org/documentation/display/current/Web+Service+Consumer