Changes for page Endpoint Check

Last modified by Danniar Firdausy on 2024/09/04 10:26

From 38.1 to 38.2 From 39.1 to 40.1

From version 38.2

edited by Erik Bakker
on 2022/06/12 09:38

Change comment: Update document after refactoring.

To version 39.1

edited by Erik Bakker
on 2022/06/12 09:39

Change comment: There is no comment for this version

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--novice-soap-webservice-connectivity-endpoint-check
++Endpoint Check

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--When setting up a point at which your customers can talk to you eMagiz offers various methods of creating such a point. One of those options is by hosting a SOAP Webservice in eMagiz that handles XML messages asynchronously or synchronously. In this microlearning, we will zoom in on the part that security plays on a client level when hosting a SOAP web service.
++When setting up a point at which your customers can talk to you eMagiz offers various methods of creating such a point. One of those options is by hosting a SOAP Webservice in eMagiz that handles XML messages asynchronously or synchronously. One last check to perform before you can communicate with the external parties that the endpoint is available to receive messages and up and running. In this microlearning, we will learn how you can perform such a check.
  Should you have any questions, please contact academy@emagiz.com.
--* Last update: June 10th, 2021
++* Last update: June 11th, 2021
  * Required reading time: 7 minutes
  == 1. Prerequisites ==
@@ -10,95 +10,95 @@
  * Basic knowledge of the eMagiz platform
  == 2. Key concepts ==
--This microlearning centers around configuring your SOAP web service.
++This microlearning centers around the endpoint check.
--By configuring, we mean: Designing and determining the characteristics of the SOAP web service
++By endpoint check, we mean: determine whether the WSDL is accessible on the correct endpoint so we can forward the URL to the WSDL + the URL to call to our external parties
--Crucial parts in the configuration are:
--* Operation Name
--* SOAP Webservice Namespace
--* Validation
--* Authentication
--
--Of these four points, we will zoom in on the authentication part of our SOAP Webservice in this microlearning.
++The endpoint consists of the following elements:
++* Starts with https:// or http://
++* Second part is the host (i.e. where is the endpoint running)
++* Third part is the port on which the incoming traffic is accepted
++* These three things combined make up the first part of our endpoint that will vary per environment
++* Following that we have a static remainder of the endpoint that is build up as follows: /ws/{path-specific-servlet-mapping}/
++* If you want to get to the WSDL simply add the name of the WSDL and the .wsdl extension to the endpoint when viewing it in the browser
--== 3. Securing your SOAP Webservice ==
++== 3. Endpoint Check ==
--When setting up a point at which your customers can talk to you eMagiz offers various methods of creating such a point. One of those options is by hosting a SOAP Webservice in eMagiz that handles XML messages asynchronously or synchronously. In this microlearning, we will zoom in on the part that security plays on a client level when hosting a SOAP web service.
++hen setting up a point at which your customers can talk to you eMagiz offers various methods of creating such a point. One of those options is by hosting a SOAP Webservice in eMagiz that handles XML messages asynchronously or synchronously. One last check to perform before you can communicate with the external parties that the endpoint is available to receive messages and up and running. In this microlearning, we will learn how you can perform such a check.
--Crucial parts in the configuration are:
--* Operation Name
--* SOAP Webservice Namespace
--* Validation
--* Authentication
++The endpoint consists of the following elements:
++* Starts with https:// or http://
++* Second part is the host (i.e. where is the endpoint running)
++* Third part is the port on which the incoming traffic is accepted
++* These three things combined make up the first part of our endpoint that will vary per environment
++* Following that we have a static remainder of the endpoint that is build up as follows: /{context-path}/{path-specific-servlet-mapping}/
++* If you want to get to the WSDL simply add the name of the WSDL and the .wsdl extension to the endpoint when viewing it in the browser
--Of these four points, we will zoom in on the authentication part of our SOAP Webservice in this microlearning. When hosting your SOAP web service in the eMagiz Cloud the endpoint will be HTTPS secured on default. If you want to mimic the same result for an on-premise environment you should define the valid SSL settings (https://my.emagiz.com/p/question/172825635700357186).
++As you can see the endpoint can be divided into two parts. One part is dynamic across environments and one part is static across environments. Let us first determine how we can find out the first part of our endpoint.
--Apart from that aspect of security, we should also consider how clients that call the SOAP Web service will authenticate themselves upon entry. Within eMagiz, we advise a two-step approach. Each client that wants to call your SOAP Webservice should:
++=== 3.1 HTTPS or HTTP ===
--* Send along a client certificate
--* Send along an API key in a SOAP Header that references to the word apiKey (i.e. apiKey)
++We start at the top with the determination of HTTPS or HTTP. A simple rule of thumb is that when running in the eMagiz Cloud the endpoint starts with https:// and when the endpoint is running locally (i.e. on-premise) the endpoint starts with http:// (unless you secure it yourself, more on that later).
--To verify both parts some configuration is needed. The first aspect, checking for a valid client certificate is done on cloud level. For more information on how to exactly configure this please take a look at the microlearning [Securing a hosted web service with certificates in the eMagiz Cloud](intermediate-securing-your-data-traffic-securing-a-hosted-webservice-with-certificates-in-the-emagiz-cloud.md).
++=== 3.2 Host ===
--In this microlearning, we will focus on the second part of the configuration.
++The next part of the endpoint is the host. The host is effectively the (virtual) machine on which the endpoint is running. When hosting an endpoint in the eMagiz cloud the host part is the combination between the DNS left-most label on Route level and the cloudslot on which your environment is running. The first part of the equation can be found under Deploy -> Architecture. The second part can be found under Deploy -> Properties by looking for the {technicalnameproject}.amqp01.host. You need to combine the two elements via a dash (-). An example of this would then be spwbsrv-test-cloud0001.emagizcloud.com. In case of an on-premise installation, you should ask your customer what the IP address or DNS name is to connect to the machine on which your runtime is running. If the runtime is running locally on your laptop the host equals localhost.
--=== 3.1 API Key verification ===
++=== 3.3 Port ===
--To verify whether the client has sent a valid API Key we need to change the configuration within the entry flow in the Create phase of eMagiz. The configuration consists of three steps:
++Whether or not the port needs to be defined to get to the endpoint is once again determined by the location. If the endpoint is hosted in the eMagiz Cloud the port is *not* part of the endpoint. However, when you host your endpoint locally the endpoint becomes part of your endpoint. Note that to make this piece work in the eMagiz Cloud you should set up your Route properly. More on that in our Cloud Management courses. You can determine the port, for the endpoint or the route, in two steps. First, we navigate to the all entry we have created and open the Jetty component. The first segment of the Jetty Server talks about the server connector. In this part, the port is defined (either via a property or statically).
--* Get value from SOAP Header
--* Check value against a list
--* Respond based on results
++[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-endpoint-check--server-connector-settings.png]]
--==== 3.1.1 Get value from SOAP Header ====
++If it is defined via a property you can search for the corresponding value under Deploy -> Properties by checking on the property name and filtering on runtime level to get to the port. If it is defined statically you can simply read it here. Note that the best practice is to use a property value as that allows you to use a different range for your port numbering between environments. In other words, it allows you to use the 9000 range for Test, the 8000 range for Acceptance, and the 9000 range for Production. This is also to safeguard against someone accidentally sending data to the wrong environment.
--Let us move to the entry flow by going to the Create phase of eMagiz, opening the correct flow, and entering "Start Editing" mode. After you have done so we need to add a support object to the flow. The support we need is called 'Complex SOAP header mapper'. In this component, we need the bottom section.
++=== 3.3 Context Path ===
--[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-securing-your-soap-webservice--complex-soap-header-mapper.png]]
++The first part of the static remainder of the endpoint is the context. By default, this is filled with /ws but you as a user can alter this. You can check the current value by opening the Jetty component again and looking at the context path that is filled in.
--Here we define a new header by entering a name and a valid XPath expression.
++[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-endpoint-check--context-path.png]]
--[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-securing-your-soap-webservice--complex-soap-header-mapper-config.png]]
++=== 3.4 Path Specific Servlet Mapping ===
--When you are satisfied you can press Save twice to store the support object. After we have configured the support object we need to link it to our web service inbound gateway. To do so open the component, navigate to the advanced tab and select the Header mapper you have just created.
++The last part of our endpoint is determined by the path-specific servlet mapping. You can once again find the value (and change it if you want to) within the Jetty component. In this component, you can see the servlet mappings and see the path that belongs to that servlet. For SOAP Webservice the best practice is to have only one servlet-mapping and in 99% of the cases, the auto-generated value of eMagiz is more than fine.
--[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-securing-your-soap-webservice--link-complex-soap-header-mapper.png]]
++[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-endpoint-check--path-specific-servlet-mapping.png]]
--==== 3.1.2 Check value against list ====
++Combining all of this, assuming we run in the eMagiz Cloud, will result in the following endpoint for our Test environment:
++* https://spwbsrv-test-cloud0001.emagizcloud.com/ws/spwbsrv-connector/
--Now that we placed the value the client has entered in the apiKey SOAP header on our message we can check whether the value exists in a list of predefined valid values. To do add two headers to the standard header enricher component in your flow. The first one ensures that the apiKey is removed from the header (to prevent the API key from being publicly seen by others). The second one searches for the client name that corresponds with the apiKey and returns the name of the client in the header. This search action is done with the help of a SpEL expression, more on that later on. In this case the SpEL expression we use is set up as follows: headers['spwbsrv_apiKey'] != null and {${authentication.api-keys}}.contains(headers.spwbsrv_apiKey) ? {${authentication.tenant-ids}}[{${authentication.api-keys}}.indexOf(headers.spwbsrv_apiKey)] : null
++Combining all of this, assuming we run locally on our laptop, will result in the following endpoint for our Test environment:
++* http://localhost:9091/ws/spwbsrv-connector/
--With this SpEL expression, we check whether there is an API key and whether that apiKey can be found in a predefined list. If so we search for the corresponding name based on the index of where a certain apiKey is within the list. If not the header is not created. Combining this logic in one component should look similar to the following.
++=== 3.5 Getting the WSDL name ===
--[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-securing-your-soap-webservice--check-headers.png]]
++To get to the WSDL to verify if it is available to be shared with external parties the last thing you need is the WSDL name. You can find this one, surprisingly enough, in the Jetty component. To get to the WSDL name double click on the servlet that is defined under the heading Servlets and navigate to the Advanced tab. Here you will see the name of the WSDL. If you have adhered to the default of eMagiz the name will mimic the name of your path-specific servlet mapping.
--==== 3.1.3 Respond based on results ====
++[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-endpoint-check--wsdl-name.png]]
--After we have searched for the API key in the list and we have defined the client that is sending the information (or not) we can respond to the client whether or not the client is authorized to call our SOAP web service. To execute this check we first need a standard filter component. In this component, we will check whether the spwbsrv_client header we have just created is not null.
++With this information we could reach the WSDL via the following endpoint, assuming we run in the eMagiz Cloud:
++* https://spwbsrv-test-cloud0001.emagizcloud.com/ws/spwbsrv-connector/spwbsrv-connector.wsdl
--[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-securing-your-soap-webservice--standard-filter.png]]
++With this information we could reach the WSDL via the following endpoint, assuming we run locally on our laptop:
++* http://localhost:9091/ws/spwbsrv-connector/spwbsrv-connector.wsdl
--If it is indeed not null we can pass the empty message back to the client telling the client that the message was delivered successfully. If the header is null we need to tell the client that he/she is unauthorized to call the operation. To do so we need to add a component called 'custom error message activator'. In this component, we define the message we want to give back to the client in case of an error. In this case, we simply give back 'Unauthorized'.
++With this information, you should be able to access the WSDL and communicate both the endpoint as well as the WSDL to your external parties.
--[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-securing-your-soap-webservice--custom-error-message.png]]
--
--With all this done we have successfully secured our SOAP web service according to the best practices.
--
  == 4. Assignment ==
--Secure a SOAP web service to confirm the outlined approach above. Focus on the apiKey part.
++Determine the endpoint of your SOAP Webservice and retrieve the WSDL.
  This assignment can be completed with the help of the (Academy) project that you have created/used in the previous assignment.
  == 5. Key takeaways ==
--* Crucial parts in the configuration are:
--    ** Operation Name
--    ** SOAP Webservice Namespace
--    ** Validation
--    ** Authentication
--* Hosting your SOAP web service in the eMagiz cloud results in standard HTTPS
--* Use a combination of client certificate + API key for authentication
++* The endpoint consists of the following elements:
++    ** Starts with https:// or http://
++    ** Second part is the host (i.e. where is the endpoint running)
++    ** Third part is the port on which the incoming traffic is accepted
++    ** These three things combined make up the first part of our endpoint that will vary per environment
++    ** Following that we have a static remainder of the endpoint that is build up as follows: /{context-path}/{path-specific-servlet-mapping}/
++    ** If you want to get to the WSDL simply add the name of the WSDL and the .wsdl extension to the endpoint when viewing it in the browser
++* The relevant information can be derived from the Jetty component and by determining where the endpoint is hosted
  == 6. Suggested Additional Readings ==
@@ -106,6 +106,6 @@
  == 7. Silent demonstration video ==
--{{video attachment="novice-soap-webservice-connectivity-securing-your-soap-webservice.mp4" reference="Main.Videos.Microlearning.WebHome"/}}
++{{video attachment="novice-soap-webservice-connectivity-endpoint-check.mp4" reference="Main.Videos.Microlearning.WebHome"/}}
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