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Intro to OSGi – the Microservices kernel - P Kriens & T Ward
- 1. OSGi – TheµServices Kernel A high level technical introduction to OSGi
- 2. Once upon atime in 1998 …
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- 4. A JSR wasborn …
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- 7. the OSGi ServiceFrameworkService
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- 11. To prevent confusion,we coined the term …
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- 15. they did itagain …
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- 17. because we areworth it …
- 18. Let’s go backto the beginning
- 19. Modularity • modules havea private space and share a public space • modules limit their visibility and exposure • complexity ∷ parts2 A B C D
- 20. Modularity • modules havea private space and share a public space • modules limit their visibility and exposure • complexity ∷ parts2 A B C D Pub
- 21. Modularity • modules havea private space and share a public space • modules limit their visibility and exposure • complexity ∷ parts2 A B C D Pub
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- 30. package com.api packagecom.provider.implpackage com.consumer.impl User Class Implementer Class Interface Interfaces/API
- 31. package com.api packagecom.provider.implpackage com.consumer.impl DocumentBuilderYour App Xerces User Class Implementer Class Interface Interfaces/API
- 32. package com.api packagecom.provider.implpackage com.consumer.impl User Class Implementer Class Interface Interfaces/API
- 33. package com.api packagecom.provider.implpackage com.consumer.impl User Class Implementer Class Interface Interfaces/API
- 34. package com.api packagecom.provider.implpackage com.consumer.impl User Class Implementer Class Interface private Interfaces/API
- 35.
- 36. package com.api packagecom.provider.implpackage com.consumer.impl
- 37. package com.api packagecom.provider.implpackage com.consumer.impl Listen
- 38. package com.api packagecom.provider.implpackage com.consumer.impl Register Listen
- 39. package com.api packagecom.provider.implpackage com.consumer.impl Register GetListen
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- 42. µService call ≡Method call
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- 44. Closer with lessirritation …
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- 50. OSGi • Adaptive • Flexible •Contracts • Robust • Secure • Evolution • Distributed D G B E H C F I
- 51. OSGi • Adaptive • Flexible •Contracts • Robust • Secure • Evolution • Distributed D A G B E H C F I
- 52. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C F I B
- 53. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C F I
- 54. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C F I
- 55. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C F I
- 56. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution D A G E H C F I
- 57. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution D A G E H C FF
- 58. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C FF
- 59. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C FF Ba Bb D A G E H C F
- 60. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C FF
- 61. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C FF I v2.0
- 62. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C FF I v2.0 S;1.1.0 F
- 63. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C FF I v2.0 S;1.1.0 F
- 64. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C FF I v2.0 S;1.1.0 F
- 65. Ba Bb OSGi • Adaptive •Flexible • Contracts • Robust • Secure • Evolution • Distributed D A G E H C FF I v2.0 S;1.1.0 F REST
- 66. Service Patterns • Factory •Listener • Discovery • Distribution • Dependencies
- 67. Service Patterns • Factory •Listener • Discovery • Distribution • Dependencies
- 68. Service Patterns • Factory •Listener • Discovery • Distribution • Dependencies
- 69. Service Patterns • Factory •Listener • Discovery • Distribution • Dependencies
- 70. Service Patterns • Factory •Listener • Discovery • Distribution • Dependencies
- 71. Service Patterns • Factory •Listener • Discovery • Distribution • Dependencies
- 72. But OSGi isso complicated!
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- 74. Complexity is inthe eye of the beholder
- 75. Complexity is inthe eye of the beholder
- 77. The right toolfor the job …
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- 81. bnd(tools) • DS ComponentAnnotation support • Access to maven central and more • Based on Capability model • Extensive debugging with dynamic updating • Executable JARs • Release tool with semantic versioning • Baselining • Integration with Continuous Integration
- 82. bnd(tools) • DS ComponentAnnotation support • Access to maven central and more • Based on Capability model • Extensive debugging with dynamic updating • Executable JARs • Release tool with semantic versioning • Baselining • Integration with Continuous Integration See N eil B ar tlett’s talk o n B n d to o ls n ext
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- 90. In the end, OSGiis inevitable …
- 91. OSGi Release 6 •June 2nd the OSGi Core Release 6 Specification received its final approval and will be available this week to the public for downloading. • http://www.osgi.org/Specifications/HomePage • The OSGi Board of Directors also approved the publication of an Early Draft Specification of OSGi Enterprise Release 6 for downloading. • http://www.osgi.org/Specifications/Drafts
- 92. OSGi Release 6 •June 2nd the OSGi Core Release 6 Specification received its final approval and will be available this week to the public for downloading. • http://www.osgi.org/Specifications/HomePage • The OSGi Board of Directors also approved the publication of an Early Draft Specification of OSGi Enterprise Release 6 for downloading. • http://www.osgi.org/Specifications/Drafts NEW