|By David Linthicum||
|November 4, 2006 03:00 PM EST||
Let's face it, WS-BPEL 1.1 was not a great standard, and left so much out that many end users and vendors found it useless. In response, the vendors put a ton of proprietary extensions in their BPEL 1.1-based products, thus diluting its value to the point of "Why bother?" This was a dirty little secret in the world of SOA. Considering that BPEL 2.0 is on the horizon, I think it's time we began to talk about what's really there, how you can fix it, and what you need to do to get from point A to point B.
What's most frustrating about the issues here is that orchestration is indeed a core feature of SOA...the configuration component that makes orchestration that part of the architecture providing agility. Orchestration, at least the notion, is a necessity if you are building an SOA. It's the layer that creates business solutions from the vast array of services and information flows found in new and existing systems. Orchestration is a god-like control mechanism that's able to put our SOA to work, as well as provide a point of control. Orchestration layers allow you to change the way your business functions, as needed, to define or redefine any business process on-the-fly. This provides the business with the flexibility and agility needed, and is the core value of SOA.
While I've been ranting and raving about this for some time, Dave Chappell does a much better job of explaining the limitations (from his blog www.davidchappell.com/blog/2005_11_01_weblog).
"Promoting BPEL's portability helps significantly in the first of these goals, since customers like the idea of not being locked in to a single vendor. But actually making customers successful has typically required extending BPEL in proprietary ways, which works against the language's promised portability. While BPEL purists might argue that all of these extensions should be provided via programming language-neutral web services interfaces, this isn't what's actually happening in the products."
With huge investments in BPEL by the larger SOA players out there, the dirty little secret is that BPEL 1.1 never really worked as advertised, and the amount of custom and proprietary extensions required to make the technology useful meant that the money, time, and effort was pretty much wasted if "standards and portability" were the goals.
The hype behind the standard, and the larger vendors supporting it, has really pushed the notion of BPEL in the last few years. However, those who have had to build solutions using the base 1.1 technology have run into many roadblocks, and thus the vendors have responded with their own unique extensions and toolsets. Are we employing a standard that's living and breathing, allowing us to protect our investment in our work, or just an instance of a vendor's tool? This is now a key question to answer.
Enter WS-BPEL 2.0, and another opportunity for vendors to get BPEL right. You can find the draft specification on the OASIS site (http://docs.oasis-open.org/wsbpel/2.0/wsbpel-specification-draft.pdf), which I read, and discovered that this spec was much improved, but many issues still remain. For instance, there are considerable differences in WS-BPEL 2.0 compared to its previous 1.1 version. The major differences include syntax changes to the language, the inclusion of new features including parallel for-each, and modifications to the semantics of existing constructions, such as compensation handling. There are a few more, and I urge you to read both the 1.1 and 2.0 specs before diving into BPEL, or assessing how deep you're in already.
What if I already implemented orchestrations using BPEL 1.1, what do I do now? In short, you purchased Beta and the world is moving to VHS. I thought that this article by BEA's Alexandre Alves (http://webservices.sys-con.com/read/155617_1.htm) did a good job of summing things up.
"For all but the simplest business processes, migration from BPEL 1.1 to BPEL 2.0 is not an easy task. Some of the syntactic changes can be automated as shown [in the Alexandre Alves article], however the semantic differences, especially when dealing with links, messaging, compensation handling, and data manipulation, will demand a comprehensive and time-consuming process."
What bothers me most about this issue is not the fact that the standard, at least in some respects, is letting SOA down, but that orchestration is such a powerful need within SOAs, and there are few other alternatives that offer a better approach, standardized or not. Thus, end users who are tasked with building solutions using emerging SOA standards such as BPEL should begin to lean on their vendors now, as well as get more involved with their respective standards organizations.
I suspect the BPEL sales guys will get some angry calls around Christmastime from their users, perhaps more so considering the use of many proprietary extensions to get around the limitations of BPEL 1.1. Not a good way to start a standard. I guess that's why my old boss told me never to buy products until release 3.0.
|Ron Ten-Hove 12/20/06 01:00:32 PM EST|
There is no such thing as WS-BPEL 1.1. There is a rather poor proprietary specification, called BPEL4WS 1.1, which was submitted to the OASIS WS-BPEL technical committee (I am a member of that committee). BPEL4WS 1.1 was a starting point; given its many limitations and ambiguities, backwards compatibility was never a realistic option. Also, backwards compatibility of a public standard with a proprietary specification is rather absurd, unless that specification enjoys "de facto" standard status, which certainly isn't the case for BPEL4WS 1.1.
The members of the WS-BPEL TC at OASIS put together a lot of experience in the world of business process and workflow automation. A lot of work was put into making WS-BPEL better defined that BPEL4WS, to ensure portability of process definitions, and no need to resort to vendor extensions to perform tasks beyond the "hello world" level of complexity. In the process, many features of BPEL4WS were revised or replaced, in order to make the language more useful. Alexandre Alves was absolutely correct when he observed that conversion from BPEL4WS 1.1 would be challenging.
There is no doubt many applications running in a services-based environment will feature orchestration; we see this already with the use of BPEL4WS 1.X and other proprietary process languages in production environments, today. In fact, there are those who claim that the very definition of ESB must include orchestration.
|Fred Holahan 11/13/06 04:15:39 PM EST|
You really need to develop some new material. This column is just a warmed over quacking of the two posts you made at InfoWorld back in September: http://weblog.infoworld.com/realworldsoa/archives/2006/09/wsbpel_20_not_... and http://weblog.infoworld.com/realworldsoa/archives/2006/09/more_on_the_bp....
Incidentally, citing Dave Chappell’s year-old blog post doesn’t help your credibility. Chappell’s assertion that “BPEL executable processes are likely to be of limited use” has already been proven wrong by numerous real world SOA applications that use BPEL for core orchestration.
BPEL is an open spec that is about to become a standard; it has no “dirty little secrets”. While it’s true that vendors have implemented extensions to make BPEL suitable for enterprise use, the same can be said for many (if not all) successful standards. Oracle extended SQL with PL/SQL, and Sybase did so with Stored Procedures, each of which is non-portable. Do those extensions render SQL itself worthless? Let me help you here … the correct answer is “no”. The essential value of any standard is knowledge portability. SOA Web Services Journal readers who made the investment to learn SQL will understand the enormous value of that investment, and the type of payback they can expect for the investment in learning BPEL.
With regard to migrating from BPEL 1.1 to 2.0, I will only say that we at Active Endpoints have made this migration automatic. You can open any 1.1 compliant process definition in the ActiveBPEL Designer and save it as a 2.0 process definition; all syntactic and semantic migration is handled automatically. The Designer is available for free download at http://www.active-endpoints.com/active-bpel-designer.htm.
Dave, you represent yourself as objective voice in the industry dialog surrounding BPEL. I find no such objectivity in your comments. The IT community deserves to have a complete, objective picture of BPEL as this critical standard reaches mainstream adoption. I’d suggest that you get on board to that reality.
|Steve Hoffman 11/06/06 08:51:56 AM EST|
Still spreadin' the FUD, eh, Dave?
Please elaborate on your claim that "the dirty little secret is that BPEL 1.1 never really worked as advertised". Is there a specific functionality that the spec describes but implementations don't, or can't, support?
And what about those "alternatives that offer a better approach"?
It sure would be nice to see a little constructive criticism. Otherwise, you're bound to dismissed as just another counter-productive "naysayer".
SYS-CON Events announced today that Windstream, a leading provider of advanced network and cloud communications, has been named “Silver Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9–11, 2015, at the Javits Center in New York, NY. Windstream (Nasdaq: WIN), a FORTUNE 500 and S&P 500 company, is a leading provider of advanced network communications, including cloud computing and managed services, to businesses nationwide. The company also offers broadband, phone and digital TV services to consumers primarily in rural areas.
Dec. 22, 2014 11:00 AM EST Reads: 3,025
The BPM world is going through some evolution or changes where traditional business process management solutions really have nowhere to go in terms of development of the road map. In this demo at 15th Cloud Expo, Kyle Hansen, Director of Professional Services at AgilePoint, shows AgilePoint’s unique approach to dealing with this market circumstance by developing a rapid application composition or development framework.
Dec. 22, 2014 11:00 AM EST Reads: 2,209
The Internet of Things is not new. Historically, smart businesses have used its basic concept of leveraging data to drive better decision making and have capitalized on those insights to realize additional revenue opportunities. So, what has changed to make the Internet of Things one of the hottest topics in tech? In his session at @ThingsExpo, Chris Gray, Director, Embedded and Internet of Things, discussed the underlying factors that are driving the economics of intelligent systems. Discover how hardware commoditization, the ubiquitous nature of connectivity, and the emergence of Big Data a...
Dec. 21, 2014 02:00 PM EST Reads: 3,157
"BSQUARE is in the business of selling software solutions for smart connected devices. It's obvious that IoT has moved from being a technology to being a fundamental part of business, and in the last 18 months people have said let's figure out how to do it and let's put some focus on it, " explained Dave Wagstaff, VP & Chief Architect, at BSQUARE Corporation, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 21, 2014 01:00 PM EST Reads: 2,655
The major cloud platforms defy a simple, side-by-side analysis. Each of the major IaaS public-cloud platforms offers their own unique strengths and functionality. Options for on-site private cloud are diverse as well, and must be designed and deployed while taking existing legacy architecture and infrastructure into account. Then the reality is that most enterprises are embarking on a hybrid cloud strategy and programs. In this Power Panel at 15th Cloud Expo (http://www.CloudComputingExpo.com), moderated by Ashar Baig, Research Director, Cloud, at Gigaom Research, Nate Gordon, Director of T...
Dec. 21, 2014 11:30 AM EST Reads: 3,185
SYS-CON Events announced today that IDenticard will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. IDenticard™ is the security division of Brady Corp (NYSE: BRC), a $1.5 billion manufacturer of identification products. We have small-company values with the strength and stability of a major corporation. IDenticard offers local sales, support and service to our customers across the United States and Canada. Our partner network encompasses some 300 of the world's leading systems integrators and security s...
Dec. 21, 2014 10:00 AM EST Reads: 2,781
ARMONK, N.Y., Nov. 20, 2014 /PRNewswire/ -- IBM (NYSE: IBM) today announced that it is bringing a greater level of control, security and flexibility to cloud-based application development and delivery with a single-tenant version of Bluemix, IBM's platform-as-a-service. The new platform enables developers to build ap...
Dec. 21, 2014 06:15 AM EST Reads: 3,330
“In the past year we've seen a lot of stabilization of WebRTC. You can now use it in production with a far greater degree of certainty. A lot of the real developments in the past year have been in things like the data channel, which will enable a whole new type of application," explained Peter Dunkley, Technical Director at Acision, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 20, 2014 08:00 AM EST Reads: 2,343
DevOps Summit 2015 New York, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that it is now accepting Keynote Proposals. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development cycles that produce software that is obsolete at launch. DevOps may be disruptive, but it is essential.
Dec. 18, 2014 09:45 PM EST Reads: 2,092
"People are a lot more knowledgeable about APIs now. There are two types of people who work with APIs - IT people who want to use APIs for something internal and the product managers who want to do something outside APIs for people to connect to them," explained Roberto Medrano, Executive Vice President at SOA Software, in this SYS-CON.tv interview at Cloud Expo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 18, 2014 09:00 AM EST Reads: 2,413
Nigeria has the largest economy in Africa, at more than US$500 billion, and ranks 23rd in the world. A recent re-evaluation of Nigeria's true economic size doubled the previous estimate, and brought it well ahead of South Africa, which is a member (unlike Nigeria) of the G20 club for political as well as economic reasons. Nigeria's economy can be said to be quite diverse from one point of view, but heavily dependent on oil and gas at the same time. Oil and natural gas account for about 15% of Nigera's overall economy, but traditionally represent more than 90% of the country's exports and as...
Dec. 18, 2014 06:00 AM EST Reads: 1,434
The Internet of Things is a misnomer. That implies that everything is on the Internet, and that simply should not be - especially for things that are blurring the line between medical devices that stimulate like a pacemaker and quantified self-sensors like a pedometer or pulse tracker. The mesh of things that we manage must be segmented into zones of trust for sensing data, transmitting data, receiving command and control administrative changes, and peer-to-peer mesh messaging. In his session at @ThingsExpo, Ryan Bagnulo, Solution Architect / Software Engineer at SOA Software, focused on desi...
Dec. 17, 2014 11:15 PM EST Reads: 2,352
"At our booth we are showing how to provide trust in the Internet of Things. Trust is where everything starts to become secure and trustworthy. Now with the scaling of the Internet of Things it becomes an interesting question – I've heard numbers from 200 billion devices next year up to a trillion in the next 10 to 15 years," explained Johannes Lintzen, Vice President of Sales at Utimaco, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 17, 2014 11:00 PM EST Reads: 2,354
"For over 25 years we have been working with a lot of enterprise customers and we have seen how companies create applications. And now that we have moved to cloud computing, mobile, social and the Internet of Things, we see that the market needs a new way of creating applications," stated Jesse Shiah, CEO, President and Co-Founder of AgilePoint Inc., in this SYS-CON.tv interview at 15th Cloud Expo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 17, 2014 08:00 PM EST Reads: 2,322
SYS-CON Events announced today that Gridstore™, the leader in hyper-converged infrastructure purpose-built to optimize Microsoft workloads, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Gridstore™ is the leader in hyper-converged infrastructure purpose-built for Microsoft workloads and designed to accelerate applications in virtualized environments. Gridstore’s hyper-converged infrastructure is the industry’s first all flash version of HyperConverged Appliances that include both compute and storag...
Dec. 17, 2014 06:30 PM EST Reads: 2,318
Today’s enterprise is being driven by disruptive competitive and human capital requirements to provide enterprise application access through not only desktops, but also mobile devices. To retrofit existing programs across all these devices using traditional programming methods is very costly and time consuming – often prohibitively so. In his session at @ThingsExpo, Jesse Shiah, CEO, President, and Co-Founder of AgilePoint Inc., discussed how you can create applications that run on all mobile devices as well as laptops and desktops using a visual drag-and-drop application – and eForms-buildi...
Dec. 17, 2014 11:45 AM EST Reads: 2,409
We certainly live in interesting technological times. And no more interesting than the current competing IoT standards for connectivity. Various standards bodies, approaches, and ecosystems are vying for mindshare and positioning for a competitive edge. It is clear that when the dust settles, we will have new protocols, evolved protocols, that will change the way we interact with devices and infrastructure. We will also have evolved web protocols, like HTTP/2, that will be changing the very core of our infrastructures. At the same time, we have old approaches made new again like micro-services...
Dec. 16, 2014 11:45 PM EST Reads: 2,311
Code Halos - aka "digital fingerprints" - are the key organizing principle to understand a) how dumb things become smart and b) how to monetize this dynamic. In his session at @ThingsExpo, Robert Brown, AVP, Center for the Future of Work at Cognizant Technology Solutions, outlined research, analysis and recommendations from his recently published book on this phenomena on the way leading edge organizations like GE and Disney are unlocking the Internet of Things opportunity and what steps your organization should be taking to position itself for the next platform of digital competition.
Dec. 15, 2014 11:45 PM EST Reads: 2,709
The 3rd International Internet of @ThingsExpo, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that its Call for Papers is now open. The Internet of Things (IoT) is the biggest idea since the creation of the Worldwide Web more than 20 years ago.
Dec. 15, 2014 10:30 AM EST Reads: 8,264
As the Internet of Things unfolds, mobile and wearable devices are blurring the line between physical and digital, integrating ever more closely with our interests, our routines, our daily lives. Contextual computing and smart, sensor-equipped spaces bring the potential to walk through a world that recognizes us and responds accordingly. We become continuous transmitters and receivers of data. In his session at @ThingsExpo, Andrew Bolwell, Director of Innovation for HP's Printing and Personal Systems Group, discussed how key attributes of mobile technology – touch input, sensors, social, and ...
Dec. 15, 2014 10:00 AM EST Reads: 3,379