Introducing Spring Framework

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Chapter 20 ■ Your First Spring XD Application Figure 20-8. RabbitMQ Web Console Figure 20-8 shows the RabbitMQ web console and the queues. Take a closer look and you will find that Spring XD has just created a particular queue with an ID as its name and a docs-pdf.0 queue that will be used for your counter. Let’s Do Analytics Now you are ready to start sending documents through RabbitMQ and see another Spring XD feature: analytics! Spring XD provides analytics to support real-time analysis using metrics such as counters and gauges. For your Spring application you are going to use the counter that was declared on the tap. The name of your counter is “pdfcount”. You can open any browser and go to http://localhost:9393/metrics. This will show you JSON data, as shown in Figure 20-9. 283
Chapter 20 ■ Your First Spring XD Application Figure 20-9. Spring XD’s Metrics at http://localhost:9393/metrics Figure 20-9 shows the Spring XD’s metrics; the counter you care about is counter.status.200.streams.docs-pdf. Also, you can go to http://localhost:9393/metrics/counters and see the name of the actual counter. In your case, it’s “pdfcount”. Next, you are going to start by sending a few documents to the RabbitMQ. (You can use the RabbitMQ web console under the queues and select docs-pdf > Publish Message section.) Look at the metric reported by Spring XD; you should have the number of messages sent. Also, you can send document messages using one of the producers from other chapters. After sending the PDF document messages, you can open any browser and go to http://localhost:9393/metrics/counters/pdfcount (see Figure 20-10). 284
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THE EXPERT’S VOICE ® IN SPRING
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Contents at a Glance About the Auth
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Introduction This book is an introd
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Part I Spring Framework Basics The
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Chapter 1 ■ Your First Spring App
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Chapter 2 ■ Working with Classes
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Chapter 3 Applying Different Config
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Chapter 3 ■ Applying Different Co
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Spring Stereotypes Chapter 3 ■ Ap
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Chapter 4 ■ Using Beans Scopes pu
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Chapter 4 ■ Using Beans Scopes Th
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Chapter 4 ■ Using Beans Scopes @A
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Chapter 4 ■ Using Beans Scopes do
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Chapter 5 ■ Working with Collecti
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Chapter 6 ■ Using Resource Files
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Chapter 7 Testing Your Spring Appli
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Chapter 7 ■ Testing Your Spring A
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Chapter 8 Give Advice to Your Sprin
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Chapter 8 ■ Give Advice to Your S
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Chapter 9 ■ Adding Persistence to
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Chapter 10 ■ Showing Your Spring
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Chapter 11 ■ Integrating Your Spr
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Chapter 12 Exposing a REST API Nowa
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Chapter 12 ■ Exposing a REST API
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HTTP-DELETE Chapter 12 ■ Exposing
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Chapter 13 Adding E-mail and Schedu
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Chapter 13 ■ Adding E-mail and Sc
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Part III Spring Framework Advanced
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Chapter 14 ■ Using Dynamic Langua
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Chapter 16 ■ Messaging with Your
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Page 317 and 318: ■ index Spring application (cont.
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Page 323 and 324: ■ Contents ■■Chapter 3: Apply
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About the Author Felipe Gutierrez i
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Acknowledgments I would like to exp
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Introducing Spring Framework

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