|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".
Most of the IoT Gateway scenarios involve collecting data from machines/processing and pushing data upstream to cloud for further analytics. The gateway hardware varies from Raspberry Pi to Industrial PCs. The document states the process of allowing deploying polyglot data pipelining software with the clear notion of supporting immutability. In his session at @ThingsExpo, Shashank Jain, a development architect for SAP Labs, discussed the objective, which is to automate the IoT deployment process from development to production scenarios using Docker containers.
Nov. 30, 2015 03:30 PM EST
We all know that data growth is exploding and storage budgets are shrinking. Instead of showing you charts on about how much data there is, in his General Session at 17th Cloud Expo, Scott Cleland, Senior Director of Product Marketing at HGST, showed how to capture all of your data in one place. After you have your data under control, you can then analyze it in one place, saving time and resources.
Nov. 30, 2015 03:15 PM EST Reads: 239
The Internet of Things (IoT) is growing rapidly by extending current technologies, products and networks. By 2020, Cisco estimates there will be 50 billion connected devices. Gartner has forecast revenues of over $300 billion, just to IoT suppliers. Now is the time to figure out how you’ll make money – not just create innovative products. With hundreds of new products and companies jumping into the IoT fray every month, there’s no shortage of innovation. Despite this, McKinsey/VisionMobile data shows "less than 10 percent of IoT developers are making enough to support a reasonably sized team....
Nov. 30, 2015 03:00 PM EST Reads: 492
Just over a week ago I received a long and loud sustained applause for a presentation I delivered at this year’s Cloud Expo in Santa Clara. I was extremely pleased with the turnout and had some very good conversations with many of the attendees. Over the next few days I had many more meaningful conversations and was not only happy with the results but also learned a few new things. Here is everything I learned in those three days distilled into three short points.
Nov. 30, 2015 02:00 PM EST Reads: 366
DevOps is about increasing efficiency, but nothing is more inefficient than building the same application twice. However, this is a routine occurrence with enterprise applications that need both a rich desktop web interface and strong mobile support. With recent technological advances from Isomorphic Software and others, rich desktop and tuned mobile experiences can now be created with a single codebase – without compromising functionality, performance or usability. In his session at DevOps Summit, Charles Kendrick, CTO and Chief Architect at Isomorphic Software, demonstrated examples of com...
Nov. 30, 2015 01:45 PM EST Reads: 429
As organizations realize the scope of the Internet of Things, gaining key insights from Big Data, through the use of advanced analytics, becomes crucial. However, IoT also creates the need for petabyte scale storage of data from millions of devices. A new type of Storage is required which seamlessly integrates robust data analytics with massive scale. These storage systems will act as “smart systems” provide in-place analytics that speed discovery and enable businesses to quickly derive meaningful and actionable insights. In his session at @ThingsExpo, Paul Turner, Chief Marketing Officer at...
Nov. 30, 2015 01:45 PM EST Reads: 434
In his keynote at @ThingsExpo, Chris Matthieu, Director of IoT Engineering at Citrix and co-founder and CTO of Octoblu, focused on building an IoT platform and company. He provided a behind-the-scenes look at Octoblu’s platform, business, and pivots along the way (including the Citrix acquisition of Octoblu).
Nov. 30, 2015 01:00 PM EST Reads: 537
In his General Session at 17th Cloud Expo, Bruce Swann, Senior Product Marketing Manager for Adobe Campaign, explored the key ingredients of cross-channel marketing in a digital world. Learn how the Adobe Marketing Cloud can help marketers embrace opportunities for personalized, relevant and real-time customer engagement across offline (direct mail, point of sale, call center) and digital (email, website, SMS, mobile apps, social networks, connected objects).
Nov. 30, 2015 12:45 PM EST Reads: 342
Countless business models have spawned from the IaaS industry – resell Web hosting, blogs, public cloud, and on and on. With the overwhelming amount of tools available to us, it's sometimes easy to overlook that many of them are just new skins of resources we've had for a long time. In his general session at 17th Cloud Expo, Harold Hannon, Sr. Software Architect at SoftLayer, an IBM Company, broke down what we have to work with, discussed the benefits and pitfalls and how we can best use them to design hosted applications.
Nov. 30, 2015 11:45 AM EST
The Internet of Everything is re-shaping technology trends–moving away from “request/response” architecture to an “always-on” Streaming Web where data is in constant motion and secure, reliable communication is an absolute necessity. As more and more THINGS go online, the challenges that developers will need to address will only increase exponentially. In his session at @ThingsExpo, Todd Greene, Founder & CEO of PubNub, exploreed the current state of IoT connectivity and review key trends and technology requirements that will drive the Internet of Things from hype to reality.
Nov. 30, 2015 10:45 AM EST Reads: 462
Two weeks ago (November 3-5), I attended the Cloud Expo Silicon Valley as a speaker, where I presented on the security and privacy due diligence requirements for cloud solutions. Cloud security is a topical issue for every CIO, CISO, and technology buyer. Decision-makers are always looking for insights on how to mitigate the security risks of implementing and using cloud solutions. Based on the presentation topics covered at the conference, as well as the general discussions heard between sessions, I wanted to share some of my observations on emerging trends. As cyber security serves as a fou...
Nov. 30, 2015 10:30 AM EST Reads: 353
With all the incredible momentum behind the Internet of Things (IoT) industry, it is easy to forget that not a single CEO wakes up and wonders if “my IoT is broken.” What they wonder is if they are making the right decisions to do all they can to increase revenue, decrease costs, and improve customer experience – effectively the same challenges they have always had in growing their business. The exciting thing about the IoT industry is now these decisions can be better, faster, and smarter. Now all corporate assets – people, objects, and spaces – can share information about themselves and thei...
Nov. 30, 2015 10:00 AM EST Reads: 290
The cloud. Like a comic book superhero, there seems to be no problem it can’t fix or cost it can’t slash. Yet making the transition is not always easy and production environments are still largely on premise. Taking some practical and sensible steps to reduce risk can also help provide a basis for a successful cloud transition. A plethora of surveys from the likes of IDG and Gartner show that more than 70 percent of enterprises have deployed at least one or more cloud application or workload. Yet a closer inspection at the data reveals less than half of these cloud projects involve production...
Nov. 30, 2015 09:00 AM EST Reads: 506
Discussions of cloud computing have evolved in recent years from a focus on specific types of cloud, to a world of hybrid cloud, and to a world dominated by the APIs that make today's multi-cloud environments and hybrid clouds possible. In this Power Panel at 17th Cloud Expo, moderated by Conference Chair Roger Strukhoff, panelists addressed the importance of customers being able to use the specific technologies they need, through environments and ecosystems that expose their APIs to make true change and transformation possible.
Nov. 30, 2015 08:00 AM EST Reads: 565
Microservices are a very exciting architectural approach that many organizations are looking to as a way to accelerate innovation. Microservices promise to allow teams to move away from monolithic "ball of mud" systems, but the reality is that, in the vast majority of organizations, different projects and technologies will continue to be developed at different speeds. How to handle the dependencies between these disparate systems with different iteration cycles? Consider the "canoncial problem" in this scenario: microservice A (releases daily) depends on a couple of additions to backend B (re...
Nov. 30, 2015 07:00 AM EST Reads: 468
Too often with compelling new technologies market participants become overly enamored with that attractiveness of the technology and neglect underlying business drivers. This tendency, what some call the “newest shiny object syndrome” is understandable given that virtually all of us are heavily engaged in technology. But it is also mistaken. Without concrete business cases driving its deployment, IoT, like many other technologies before it, will fade into obscurity.
Nov. 30, 2015 07:00 AM EST Reads: 383
Container technology is shaping the future of DevOps and it’s also changing the way organizations think about application development. With the rise of mobile applications in the enterprise, businesses are abandoning year-long development cycles and embracing technologies that enable rapid development and continuous deployment of apps. In his session at DevOps Summit, Kurt Collins, Developer Evangelist at Built.io, examined how Docker has evolved into a highly effective tool for application delivery by allowing increasingly popular Mobile Backend-as-a-Service (mBaaS) platforms to quickly crea...
Nov. 30, 2015 06:00 AM EST Reads: 388
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists discussed what things are the most important, which will have the most profound effect on the world, and what should we expect to see over the next couple of years.
Nov. 30, 2015 05:30 AM EST Reads: 495
Growth hacking is common for startups to make unheard-of progress in building their business. Career Hacks can help Geek Girls and those who support them (yes, that's you too, Dad!) to excel in this typically male-dominated world. Get ready to learn the facts: Is there a bias against women in the tech / developer communities? Why are women 50% of the workforce, but hold only 24% of the STEM or IT positions? Some beginnings of what to do about it! In her Day 2 Keynote at 17th Cloud Expo, Sandy Carter, IBM General Manager Cloud Ecosystem and Developers, and a Social Business Evangelist, wil...
Nov. 30, 2015 04:00 AM EST Reads: 608
PubNub has announced the release of BLOCKS, a set of customizable microservices that give developers a simple way to add code and deploy features for realtime apps.PubNub BLOCKS executes business logic directly on the data streaming through PubNub’s network without splitting it off to an intermediary server controlled by the customer. This revolutionary approach streamlines app development, reduces endpoint-to-endpoint latency, and allows apps to better leverage the enormous scalability of PubNub’s Data Stream Network.
Nov. 30, 2015 04:00 AM EST Reads: 350