Changes for page SOAP Headers
Last modified by Erik Bakker on 2024/08/26 12:48
From version 28.1
edited by Erik Bakker
on 2022/06/10 13:12
on 2022/06/10 13:12
Change comment:
There is no comment for this version
To version 48.1
edited by Erik Bakker
on 2024/08/26 12:48
on 2024/08/26 12:48
Change comment:
There is no comment for this version
Summary
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... ... @@ -1,70 +1,70 @@ 1 1 {{container}}{{container layoutStyle="columns"}}((( 2 - Inthismicrolearning,wewilllearn howyoucandefine a headerlinein whichyou specifythenaming ofthevariouscolumns. Someexternalsystemsrequireaheaderlinewhenyousupplythemwithdataviaaflatfilehatsplaced somewhere.2 +When communicating via SOAP web service calls it can happen that an exchange of data needs to happen between the message headers on your message and the SOAP headers. In this microlearning, we will learn about this exchange in both directions. SOAP Headers are headers within a SOAP Envelope that can be used to communicate metadata or authentication information between parties. 3 3 4 -Should you have any questions, please contact [[academy@emagiz.com>>mailto:academy@emagiz.com]].4 +Should you have any questions, please contact academy@emagiz.com. 5 5 6 -* Last update: May 28th, 2021 7 -* Required reading time: 5 minutes 8 - 9 9 == 1. Prerequisites == 10 - 11 11 * Basic knowledge of the eMagiz platform 12 12 13 13 == 2. Key concepts == 10 +This microlearning centers around SOAP Headers. 14 14 15 - This microlearningcentersaroundlearninghowtoplacea headerlineaflat-fileoutput.12 +By SOAP Headers, we mean: headers within a SOAP Envelope that can be used to communicate metadata or authentication information between parties 16 16 17 -By header line we mean: A line in the output that defines the naming of the various columns 14 +You can exchange data from: 15 +* SOAP Header to Message Header 16 +* Message Header to SOAP Header 18 18 19 - Someexternalpartiesrequire that thefirstline in theflatfileoutput(i.e. CSV) isfilled withcolumn names (i.e.headers). IneMagiz, wecall this line a header line.18 +In both cases ensure that the correct information is exchanged. 20 20 21 -== 3. Header line==20 +== 3. SOAP Headers == 22 22 23 -In this microlearning, we will learn how you can define a header line in which you specify the naming of the various columns. Some external systems require a header line when you supply them with data via a flat file that is placed somewhere. The header line is the first line in the flat file output. Within this line, the various column names are specified for clarity. 22 +You can exchange data from: 23 +* SOAP Header to Message Header 24 +* Message Header to SOAP Header 24 24 25 - To add such a header linein eMagiz you needto navigate to theCreate phaseof eMagiz and open the exit flow in which you want to drop the file to a certain location. Within the context of thisflow, weeed to add functionality that will ensure thata header line is written to the output beforeany functionallines are added. To do sofirst enter "StartEditing" mode onflow level. After you have donesoplease add a file outboundchannel adapter to the flow includingan input channel. We will use this component to write our header line to the flat file output.26 +In both cases ensure that the correct information is exchanged. 26 26 27 - Ensurethatthedirectorytowhichyou reference isthe same asfunctionalfile outbound channel adapter.28 +In a previous microlearning, we already discussed one aspect of this. As you probably recall from our microlearning on [[Securing your SOAP Webservice>>doc:Main.eMagiz Academy.Microlearnings.Novice.SOAP Web service Connectivity.novice-soap-webservice-connectivity-securing-your-soap-webservice||target="blank"]] we needed to exchange data between the SOAP header that our client was sending and a message header on the message so we could check whether or not the client was authorized to call the operation. 28 28 29 - [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-header-line--file-outbound-channel-header-line.png]]30 +In that microlearning, we also discussed the component that we need for this. The 'complex SOAP header mapper'. 30 30 31 - Nowit is time to turn ourattentionto the Advanced tab.For theMode select Ignore. Select this option to ensure that the headerlineisonly writtendown oncehen thereis no outputcreated yet andnot somewhere inthe middle,intheend, orevery time. Furthermore,select theoption Append New Line to ensure that theremainderof the information is not appended to the same line.32 +[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-soap-headers--complex-soap-header-mapper.png]] 32 32 33 - [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-header-line--file-outbound-channel-header-line-advanced.png]]34 +As you can see you can map from and to message headers with regards to the SOAP Headers. As we already discussed the first scenario in an earlier microlearning I will for now continue with the other scenario. This scenario is mainly needed when eMagiz calls a SOAP web service that is hosted by an external party. Since we would normally do this in an exit (gate/flow) let us open such an exit in eMagiz and enter "Start Editing" mode. 34 34 35 - Afteryouhavedoneso we need toaddastandardtransformerthatdefinesthevarious column names tobewrittento the flatfileoutput.Todosoaddthe standardtransformer component to thecanvasincludinganinput channel.Afteryouhavedoneso definetherelevantSpEL expression.Inthiscase,weadviseusing a propertyvaluethatrepresents astringof columnnames.The value ofthe propertyshould be something as follows:36 +The first step we need to take is to ensure that the information that we need to send to the SOAP web service in question (in this a unique reference number) is available in a message header. This can be done by verifying in all steps that preceded before the message entered the exit whether or not this piece of information was already added to a message header. In this case, we assume that this is the case since we want to focus on the 'complex SOAP header mapper' component and its relation to the web services outbound gateway. To correctly exchange data from a message header to a SOAP header we need to define a valid SpEL expression. See the help text of the component for a suggestion of what a valid SpEL expression is. The key part in this is knowing how the external party wants to receive the header(s) and how you (or one of your colleagues) has named the message header. When you have those two information elements you can write the correct expression. The result should be something as follows: 36 36 37 - 'Header1;Header2;Header3;Header4'38 +[[image:Main.Images.Microlearning.WebHome@novice-soap-webservice-connectivity-soap-headers--mapping-from-message-header.png]] 38 38 39 - Donotethatthe separator,inthiscase,needstomatchtherequirementsof theexternalsystem.Attheflowconfiguration level,thestandard transformershouldlookas follows.40 +Once you are satisfied you can press Save and link the support object to the web service outbound gateway. 40 40 41 - [[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-header-line--define-columns-names.png]]42 +With this information, you can place SOAP Headers on message headers and vice versa every time you need it. 42 42 43 - Ourlast step is to ensure that this piece of logic is tied to the main flow and is executed before writing the functional line(s) to the output file.To makethat happen we need to add a wiretap to the flow. With the help of this functionality,you can define which partof the logic takes precedence overanother part of the logic. To do so double click on the channel onwhich you want to place a wiretap, select the option wiretap and select the correct wiretap channel. Afteryou have done thisthe result should be something as follows:44 +== 4. Key takeaways == 44 44 45 -[[image:Main.Images.Microlearning.WebHome@novice-file-based-connectivity-header-line--wiretap-result.png]] 46 +* You can exchange data from: 47 + ** SOAP Header to Message Header 48 + ** Message Header to SOAP Header 49 +* You need the SOAP structure and the message header name to make it work 46 46 47 - Withthesecouple of steps, you have now successfully added logic to your flow that willensurethat a headerline is added before any functionalline(s)are writtento the output file.51 +== 5. Suggested Additional Readings == 48 48 49 -== 4. Assignment == 53 +* [[Crash Course (Menu)>>doc:Main.eMagiz Academy.Microlearnings.Crash Course.WebHome||target="blank"]] 54 +** [[Crash Course API Gateway (Navigation)>>doc:Main.eMagiz Academy.Microlearnings.Crash Course.Crash Course API Gateway.WebHome||target="blank"]] 55 +*** [[Setting up Exit gate (Explanation)>>doc:Main.eMagiz Academy.Microlearnings.Crash Course.Crash Course API Gateway.crashcourse-api-gateway-setting-up-exit-gate||target="blank"]] 56 +* [[Novice (Menu)>>doc:Main.eMagiz Academy.Microlearnings.Novice.WebHome||target="blank"]] 57 +** [[SOAP Web service Connectivity (Navigation)>>doc:Main.eMagiz Academy.Microlearnings.Novice.SOAP Web service Connectivity.WebHome||target="blank"]] 58 +*** [[Configure your SOAP web service (Explanation)>>doc:Main.eMagiz Academy.Microlearnings.Novice.SOAP Web service Connectivity.novice-soap-webservice-connectivity-configure-your-soap-webservice-gen3.WebHome||target="blank"]] 59 +*** [[Securing your SOAP Webservice (Explanation)>>doc:Main.eMagiz Academy.Microlearnings.Novice.SOAP Web service Connectivity.novice-soap-webservice-connectivity-securing-your-soap-webservice||target="blank"]] 60 +*** [[Validate Incoming Messages (Explanation)>>doc:Main.eMagiz Academy.Microlearnings.Novice.SOAP Web service Connectivity.novice-soap-webservice-connectivity-validate-incoming-messages-gen3.WebHome||target="blank"]] 61 +*** [[Endpoint Check (Explanation)>>doc:Main.eMagiz Academy.Microlearnings.Novice.SOAP Web service Connectivity.novice-soap-webservice-connectivity-endpoint-check-gen3.WebHome||target="blank"]] 62 +*** [[Calling a SOAP Web service (Explanation)>>doc:Main.eMagiz Academy.Microlearnings.Novice.SOAP Web service Connectivity.novice-soap-webservice-connectivity-calling-a-soap-webservice||target="blank"]] 63 +*** [[Authorization - Calling a SOAP Webservice (Explanation)>>doc:Main.eMagiz Academy.Microlearnings.Novice.SOAP Web service Connectivity.novice-soap-webservice-connectivity-authorization-calling-a-soap-webservice||target="blank"]] 64 +* [[Intermediate (Menu)>>doc:Main.eMagiz Academy.Microlearnings.Intermediate Level.WebHome||target="blank"]] 65 +** [[SOAP Web service Connectivity (Navigation)>>doc:Main.eMagiz Academy.Microlearnings.Intermediate Level.SOAP Web service Connectivity.WebHome||target="blank"]] 66 +* [[Expert (Menu)>>doc:Main.eMagiz Academy.Microlearnings.Expert Level.WebHome||target="blank"]] 67 +** [[Webservice Security (Menu)>>doc:Main.eMagiz Academy.Microlearnings.Expert Level.Webservice Security.WebHome||target="blank"]] 68 +* [[SOAP Headers (Search Result)>>url:https://docs.emagiz.com/bin/view/Main/Search?sort=score&sortOrder=desc&highlight=true&facet=true&r=1&f_space_facet=0%2FMain.&f_type=DOCUMENT&f_locale=en&f_locale=&f_locale=en&text=%22soap+headers%22||target="blank"]] 50 50 51 -Configure an exit in which you define and write a header line to a flat-file output before adding functional lines. 52 -This assignment can be completed with the help of the (Academy) project that you have created/used in the previous assignment. 53 - 54 -== 5. Key takeaways == 55 - 56 -* The header line contains the names of the columns of the flat file output 57 -* Use the Ignore mode to ensure the header line is created once 58 -* Use the wiretap to ensure the header line is created first 59 - 60 -== 6. Suggested Additional Readings == 61 - 62 -There are no suggested additional readings on this topic 63 - 64 -== 7. Silent demonstration video == 65 - 66 -This video demonstrates how you could have handled the assignment and gives you some context on what you have just learned. 67 - 68 -{{video attachment="novice-file-based-connectivity-header-line.mp4" reference="Main.Videos.Microlearning.WebHome"/}} 69 - 70 70 )))((({{toc/}}))){{/container}}{{/container}}