killbill-payment-test-plugin

Plugin to test the Kill Bill PaymentPlugin API.

Release builds are available on Maven Central with coordinates org.kill-bill.billing.plugin.java:payment-test-plugin.

Kill Bill compatibility

Plugin version	Kill Bill version
4.x.y	0.18.z
5.x.y	0.19.z
6.x.y	0.20.z
7.x.y	0.22.z
8.x.y	0.24.z

Requirements

The plugin needs a database. The latest version of the schema can be found here.

Build

mvn clean install

Installation

Locally:

kpm install_java_plugin payment-test-plugin --from-source-file target/payment-test-plugin-*-SNAPSHOT.jar --destination /var/tmp/bundles

Usage

The plugin currently supports 3 different modes

• A mode where the plugin can be configured on a per request basis
• A mode where the plugin can be configured through a private endpoint for all subsequent requests
• A backward compatible mode for existing killbill unit test

Per Request Level Configuration

When using payment api, one can provide payment plugin properties to enable failure modes:

In that mode, the property TEST_MODE must be set to something different than BEATRIX (any other string would work. In addition the following properties are allowed:

• ACTION_RETURN_PLUGIN_STATUS_ERROR=true : This will make the plugin return a PaymentPluginStatus.ERROR on each payment call (e.g to simulate Insuficient Fund type of errors).
• ACTION_RETURN_PLUGIN_STATUS_CANCELED=true : This will make the plugin return a PaymentPluginStatus.CANCELED on each payment call (e.g. to simulate Gateway Error type of errors).
• ACTION_RETURN_PLUGIN_STATUS_PENDING=true : This will make the plugin return a PaymentPluginStatus.PENDING on each payment call
• THROW_EXCEPTION=true : This will make the plugin throw RuntimeException exception on each call
• RETURN_NIL=true : This will make the plugin return a nil value on each call
• SLEEP_TIME_SEC=sleep_time_sec : This will make the plugin sleep sleep_time_sec on each call
• AMOUNT=amount: This will make the plugin method return the specified amount

Global State Configuration

There are cases where it is not possible to pass plugin properties because the payments are made by the system, and the user does not have the opportunity to set plugin properties. For example, when Kill Bill attempts to pay an invoice, it make a purchasePayment call without passing plugin properties.

In order to address this scenario it is convenient to configure the plugin to behave a certain way. The plugin can be configured using a private endpoint /plugins/killbill-payment-test/configure to either throw exceptions, return nil values or sleep (similar to previous mode). However we also allow to configure which operations should behave that way (the idea is that we may want to make a purchasePayment call fail but still allow the get_payment_info call to return. In addition, it is also possible to configure the amount returned by the plugin.

The json body for the call supports the following:

• CONFIGURE_ACTION: {ACTION_THROW_EXCEPTION|RETURN_NIL|ACTION_SLEEP|ACTION_RETURN_PLUGIN_STATUS_PENDING|ACTION_RETURN_PLUGIN_STATUS_ERROR|ACTION_RETURN_PLUGIN_STATUS_CANCELED}
• SLEEP_TIME_SEC: (valid for CONFIGURE_ACTION = ACTION_SLEEP
• METHODS: The PaymentPluginApi methods for which the configuration apply (or all methods if not specified). Note that the name specified here must match the method name in PaymentPluginApi.
• AMOUNT : The amount that the plugin method should return

Examples:

To configure the plugin to return a payment error on each purchasePayment call you can use:

curl -v \
-u'admin:password' \
-H "X-Killbill-ApiKey: bob" \
-H 'X-Killbill-ApiSecret: lazar' \
-H "Content-Type: application/json" \
-H 'X-Killbill-CreatedBy: stephane' \
-X POST \
--data-binary '{"CONFIGURE_ACTION":"ACTION_RETURN_PLUGIN_STATUS_ERROR", "METHODS":"purchasePayment"}' \
 -v 'http://127.0.0.1:8080/plugins/killbill-payment-test/configure'

To configure the plugin to return the processed amount as 10 for each purchasePayment call you can use:

curl -v \
-u'admin:password' \
-H "X-Killbill-ApiKey: bob" \
-H 'X-Killbill-ApiSecret: lazar' \
-H "Content-Type: application/json" \
-H 'X-Killbill-CreatedBy: stephane' \
-X POST \
--data-binary '{"METHODS":"purchasePayment", "AMOUNT":"10"}' \
 -v 'http://127.0.0.1:8080/plugins/killbill-payment-test/configure' 

To clear the state, you can use:

curl -v \
-u'admin:password' \
-H "X-Killbill-ApiKey: bob" \
-H 'X-Killbill-ApiSecret: lazar' \
-H "Content-Type: application/json" \
-H 'X-Killbill-CreatedBy: stephane' \
-X POST \
--data-binary '{"CONFIGURE_ACTION":"ACTION_CLEAR"}' \
 -v 'http://127.0.0.1:8080/plugins/killbill-payment-test/configure'

About

Kill Bill is the leading Open-Source Subscription Billing & Payments Platform. For more information about the project, go to https://killbill.io/.