Welcome!

Industrial IoT Authors: Pat Romanski, Elizabeth White, Maria C. Horton, Liz McMillan, Ed Featherston

Blog Feed Post

Orchestration of a JSON API with a SOAP Web Service using the Axway/Vordel API Server

A frequent question about the Axway/Vordel API Server is "Is it possible to orchestrate multiple calls to different APIs or Web Services?". The answer is "Yes", and in this blog I'll show how. Along the way, we'll see how to configure JSON Path on the API Server.

For my worked example, I'm using a weather-lookup scenario. It's now Spring in Boston, and I'm interested in finding out the temperature using the API Server. Yahoo provides a great Weather API to retrieve weather information using REST and JSON. Unfortunately though, it returns the temperature in Fahrenheit and I'm more familiar with Celsius. So, I want to take the temperature from the Yahoo output, and feed this as input to the W3 Schools Fahrenheit-to-Celsius conversion Web Service. This means that I'm orchestrating to calls, one to a REST JSON API and the other to a SOAP Web Service.

Breaking down the steps, this means:

Step 1) The API Server receives a HTTP GET request containing a zip code as a parameter, like this: http://API-Server/orchestration?zip=02110

Step 2) The API Server first makes an API call for this zipcode's weather to Yahoo's Weather API, which returns the weather info as JSON

Step 3) We then extract the temperature from the Yahoo JSON response, and use this to construct a SOAP request to the W3 Schools Fahrenheit-to-Celsius conversion Web Service.

Step 4) Finally, we return the temperature info, converted to Celsius, to the client.

To achieve this, we use a circuit on the API Server, which I show in its entirety below:


Let's look at the steps in detail. Each of the blocks in the circuit is called a "filter". Let's look at what each filter does

1) Extract REST Request Attributes. This filter takes the items from the HTTP request and converts them to variables (which we call "Attributes"). When I call the API Server with a request in the browser like http://API-Server/orchestration?zip=02110 , the value "02110" is put into the attribute ${http.querystring.zip}

2) Set HTTP Verb to GET. This is a "Set HTTP Verb" filter which sets the HTTP Verb to "GET", as shown below:



I am setting the verb to GET because we need to do a GET request to Yahoo's REST Weather API.

3) Call Yahoo Weather API. This is a "Connect to URL" filter, which is configured to pass the zipcode which we've read from the querystring using the Extract REST Request Attributes filter earlier. Notice the zipcode underlined below in red:


4) Read temperature using JSON Path. After we call the Yahoo API, we have the weather response as JSON. I used the excellent online JSON Path Evaluator to construct the JSON Path to read the temperature from the Yahoo response into an Attribute called "temperature":


5) Create temperature lookup request. The next step is to use a "Set Message" filter to take the temperature from the Yahoo JSON response (which we've just read using JSON Path) and place it into a SOAP request to the Fahrenheit-Celsius conversion Web Service, as shown below:



6) Set HTTP Verb to POST. This is another "Set HTTP Verb" filter, this time setting the verb to "POST" because we are about to POST our new SOAP request to the W3 Schools Web Service.



7) Connect to Temperature Conversion Service. This is a "Connect to URL" filter, which contains the URL we want to POST to.


8) Retrieve Celsius temp from message. This is a "Retrieve from Message" filter which uses XPath to read the Celsius value from the SOAP response. To use the XPath Wizard, click on the little magic wand icon, and open a stored example of the SOAP response. I show the configuration for this below:


9) Return Response. This is a "Set Message" filter, and you can see it takes the ${temperature} attribute from the XPath in Step 8, with the Zipcode we read from the Query-String in Step 1:



I wire up the circuit to a path of "/orchestration", like so:


This means that whenever a request comes in to "/orchestration", my circuit is run.

I can call circuit simply from a browser like so:


You can see it's just over 8C in Boston right now. Balmy, compared to a couple of weeks ago.

Using the Vordel Manager on port 8090 of an API Server instance, I can see each request go through, and click on "Show" buttons to see the actual messages and response.


You can see above that there are three request-response pairs:

1) From the Browser to the API Server
2) From the API Server to the Yahoo REST/JSON Weather API
3) From the API Server to the W3 Schools SOAP Web Service to convert from Fahrenheit to Celsius.

So, what we've seen here is that you can orchestrate two requests, one to a REST API and another to a SOAP Web Service, using the Axway/Vordel API Server. Note that the second request overwrites the initial response (if you want to keep a copy of the first response, use a "Store" filter and then use "Restore" to restore the message later).

For more info about the Axway/Vordel API Server, email [email protected]

Read the original blog entry...

More Stories By Mark O'Neill

Mark O'Neill is VP Innovation at Axway - API and Identity. Previously he was CTO and co-founder at Vordel, which was acquired by Axway. A regular speaker at industry conferences and a contributor to SOA World Magazine and Cloud Computing Journal, Mark holds a degree in mathematics and psychology from Trinity College Dublin and graduate qualifications in neural network programming from Oxford University.

@ThingsExpo Stories
Organizations planning enterprise data center consolidation and modernization projects are faced with a challenging, costly reality. Requirements to deploy modern, cloud-native applications simultaneously with traditional client/server applications are almost impossible to achieve with hardware-centric enterprise infrastructure. Compute and network infrastructure are fast moving down a software-defined path, but storage has been a laggard. Until now.
In his general session at 19th Cloud Expo, Manish Dixit, VP of Product and Engineering at Dice, discussed how Dice leverages data insights and tools to help both tech professionals and recruiters better understand how skills relate to each other and which skills are in high demand using interactive visualizations and salary indicator tools to maximize earning potential. Manish Dixit is VP of Product and Engineering at Dice. As the leader of the Product, Engineering and Data Sciences team at D...
DXWorldEXPO LLC announced today that the upcoming DXWorldEXPO | CloudEXPO New York event will feature 10 companies from Poland to participate at the "Poland Digital Transformation Pavilion" on November 12-13, 2018.
Digital Transformation is much more than a buzzword. The radical shift to digital mechanisms for almost every process is evident across all industries and verticals. This is often especially true in financial services, where the legacy environment is many times unable to keep up with the rapidly shifting demands of the consumer. The constant pressure to provide complete, omnichannel delivery of customer-facing solutions to meet both regulatory and customer demands is putting enormous pressure on...
The best way to leverage your CloudEXPO | DXWorldEXPO presence as a sponsor and exhibitor is to plan your news announcements around our events. The press covering CloudEXPO | DXWorldEXPO will have access to these releases and will amplify your news announcements. More than two dozen Cloud companies either set deals at our shows or have announced their mergers and acquisitions at CloudEXPO. Product announcements during our show provide your company with the most reach through our targeted audienc...
JETRO showcased Japan Digital Transformation Pavilion at SYS-CON's 21st International Cloud Expo® at the Santa Clara Convention Center in Santa Clara, CA. The Japan External Trade Organization (JETRO) is a non-profit organization that provides business support services to companies expanding to Japan. With the support of JETRO's dedicated staff, clients can incorporate their business; receive visa, immigration, and HR support; find dedicated office space; identify local government subsidies; get...
DXWorldEXPO LLC announced today that All in Mobile, a mobile app development company from Poland, will exhibit at the 22nd International CloudEXPO | DXWorldEXPO. All In Mobile is a mobile app development company from Poland. Since 2014, they maintain passion for developing mobile applications for enterprises and startups worldwide.
@DevOpsSummit at Cloud Expo, taking place November 12-13 in New York City, NY, is co-located with 22nd international CloudEXPO | first international DXWorldEXPO and will feature technical sessions from a rock star conference faculty and the leading industry players in the world.
"Akvelon is a software development company and we also provide consultancy services to folks who are looking to scale or accelerate their engineering roadmaps," explained Jeremiah Mothersell, Marketing Manager at Akvelon, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
As data explodes in quantity, importance and from new sources, the need for managing and protecting data residing across physical, virtual, and cloud environments grow with it. Managing data includes protecting it, indexing and classifying it for true, long-term management, compliance and E-Discovery. Commvault can ensure this with a single pane of glass solution – whether in a private cloud, a Service Provider delivered public cloud or a hybrid cloud environment – across the heterogeneous enter...
DXWorldEXPO LLC announced today that ICC-USA, a computer systems integrator and server manufacturing company focused on developing products and product appliances, will exhibit at the 22nd International CloudEXPO | DXWorldEXPO. DXWordEXPO New York 2018, colocated with CloudEXPO New York 2018 will be held November 11-13, 2018, in New York City. ICC is a computer systems integrator and server manufacturing company focused on developing products and product appliances to meet a wide range of ...
More and more brands have jumped on the IoT bandwagon. We have an excess of wearables – activity trackers, smartwatches, smart glasses and sneakers, and more that track seemingly endless datapoints. However, most consumers have no idea what “IoT” means. Creating more wearables that track data shouldn't be the aim of brands; delivering meaningful, tangible relevance to their users should be. We're in a period in which the IoT pendulum is still swinging. Initially, it swung toward "smart for smart...
Headquartered in Plainsboro, NJ, Synametrics Technologies has provided IT professionals and computer systems developers since 1997. Based on the success of their initial product offerings (WinSQL and DeltaCopy), the company continues to create and hone innovative products that help its customers get more from their computer applications, databases and infrastructure. To date, over one million users around the world have chosen Synametrics solutions to help power their accelerated business or per...
Dion Hinchcliffe is an internationally recognized digital expert, bestselling book author, frequent keynote speaker, analyst, futurist, and transformation expert based in Washington, DC. He is currently Chief Strategy Officer at the industry-leading digital strategy and online community solutions firm, 7Summits.
In an era of historic innovation fueled by unprecedented access to data and technology, the low cost and risk of entering new markets has leveled the playing field for business. Today, any ambitious innovator can easily introduce a new application or product that can reinvent business models and transform the client experience. In their Day 2 Keynote at 19th Cloud Expo, Mercer Rowe, IBM Vice President of Strategic Alliances, and Raejeanne Skillern, Intel Vice President of Data Center Group and ...
Founded in 2000, Chetu Inc. is a global provider of customized software development solutions and IT staff augmentation services for software technology providers. By providing clients with unparalleled niche technology expertise and industry experience, Chetu has become the premiere long-term, back-end software development partner for start-ups, SMBs, and Fortune 500 companies. Chetu is headquartered in Plantation, Florida, with thirteen offices throughout the U.S. and abroad.
Bill Schmarzo, author of "Big Data: Understanding How Data Powers Big Business" and "Big Data MBA: Driving Business Strategies with Data Science," is responsible for setting the strategy and defining the Big Data service offerings and capabilities for EMC Global Services Big Data Practice. As the CTO for the Big Data Practice, he is responsible for working with organizations to help them identify where and how to start their big data journeys. He's written several white papers, is an avid blogge...
"We are a well-established player in the application life cycle management market and we also have a very strong version control product," stated Flint Brenton, CEO of CollabNet,, in this SYS-CON.tv interview at 18th Cloud Expo at the Javits Center in New York City, NY.
It is of utmost importance for the future success of WebRTC to ensure that interoperability is operational between web browsers and any WebRTC-compliant client. To be guaranteed as operational and effective, interoperability must be tested extensively by establishing WebRTC data and media connections between different web browsers running on different devices and operating systems. In his session at WebRTC Summit at @ThingsExpo, Dr. Alex Gouaillard, CEO and Founder of CoSMo Software, presented ...
Most people haven’t heard the word, “gamification,” even though they probably, and perhaps unwittingly, participate in it every day. Gamification is “the process of adding games or game-like elements to something (as a task) so as to encourage participation.” Further, gamification is about bringing game mechanics – rules, constructs, processes, and methods – into the real world in an effort to engage people. In his session at @ThingsExpo, Robert Endo, owner and engagement manager of Intrepid D...