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A Sneak Peek at Spring Boot 2.0
By Madhura Bhave / Phil Webb
@madhurabhave23 / @phillip_webb
1
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Agenda
• What’s New• Infrastructure upgrades
• Spring Framework 5
• What’s Changed• Configuration properties
• Gradle plugin
• Actuator endpoints
• What’s Evolving• Security
• Metrics
2
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What’s New
• Infrastructure upgrades
• Spring Framework 5
3
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What’s New
• Infrastructure upgrades
• Spring Framework 5
4
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Infrastructure Upgrades
5
8+ 8+
5.23
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What’s New
• Infrastructure Upgrades
• Spring Framework 5
6
Unless o therwise ind ica ted, these s l ides a re © 2013 -2017 P ivo ta l So f tware , Inc . and l i censed under a Crea t ive Commons
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Spring Framework 5
• Reactive Spring
• Functional APIs
• Kotlin support
7
Unless o therwise ind ica ted, these s l ides a re © 2013 -2017 P ivo ta l So f tware , Inc . and l i censed under a Crea t ive Commons
At t r ibu t ion -NonCommerc ia l l i cense : h t tp : / / c rea t ivecommons.org/ l i censes/by -nc /3 .0 /
Spring Framework 5
• Reactive Spring
• Functional APIs
• Kotlin support
8
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Reactive Spring
9
😀
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Reactive Spring
10
😱 🐌
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Reactive Spring
Blocking
• Large thread pool required
• Each request gets its own thread
Non-Blocking
• Small thread pool
• Worker threads process events
11
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Reactive SpringServlet Stack
• Servlet container
• Servlet API
• Spring MVC
Reactive Stack
• Netty, Servlet 3.1, Undertow
• Reactive HTTP layer (Reactive Streams)
• Spring WebFlux
12
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Reactive Spring
13
Mono<T> Flux<T>
Reactive Streams
Project Reactor
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Demo
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Reactive Spring
• Non-blocking
• Event driven at the center
• More for scalability than speed
• You can still use Spring MVC
15
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Spring Framework 5
• Reactive Spring
• Functional APIs
• Kotlin support
16
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Functional APIs
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RouterFunction<?> route = route(GET("/person/{id}"),
request -> {
Mono<Person> person = Mono.justOrEmpty(request.pathVariable("id"))
.map(Integer::valueOf)
.then(repository::getPerson);
return ServerResponse.ok().body(fromPublisher(person, Person.class));
})
.and(route(GET("/person"),
request -> {
Flux<Person> people = repository.allPeople();
return ServerResponse.ok().body(fromPublisher(people, Person.class));
}))
.and(route(POST("/person"),
request -> {
Mono<Person> person = request.body(toMono(Person.class));
return ServerResponse.ok().build(repository.savePerson(person));
}));
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Spring Framework 5
• Reactive Spring
• Functional APIs
• Kotlin Support
18
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What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
19
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What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
20
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Configuration Properties• Relaxed binding rules stay the same
• Uniform format for reading properties from the environment• Elements separated by dots
• Must be alpha-numeric
• Must be lowercase
• Hyphen can be used to separate words
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my.foo.hello-worldmy.foo.helloWorldmy.foo.hello_world
my.foo.helloworld
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Configuration Properties
• Indices in environment variables
MY_VAR_1=a my.var[1]
MY_VAR_1_2=b my.var[1][2]
• Consistent behavior for Collections
• Better types, e.g. Duration “1s” “2m” “5d”
• Origin support
22
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Demo
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What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
24
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Gradle Plugin•bootRepackage replaced by bootJar & bootWar
• Tasks do not figure out what to do
• Plugin configures the tasks with sensible defaults
• Reacts to other plugins
• Explicit dependency management
25
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What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
26
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Actuator Endpoints
• Endpoint annotations
•@Endpoint, @WebEndpoint, @JmxEndpoint
• Tech independent operations
•@ReadOperation, @WriteOperation, @DeleteOperation
• Tech specific extensions
•@EndpointWebExtension, @EndpointJmxExtension
27
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Actuator Endpoints
• Works with:
• Spring MVC
• Jersey
• Spring WebFlux
• Reactive health indicators
28
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What’s Evolving
• Metrics
• Security
29
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What’s Evolving
• Metrics
• Security
30
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Metrics
• Auto-configuration for metrics instrumentation by Micrometer *
• Hierarchical metrics replaced by dimensional metrics
• Facade over multiple monitoring systems
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* Introducing Micrometer Application Metrics - (Thursday 10:30am)
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What’s Evolving
• Metrics
• Security
32
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Security
• Simpler security auto-configuration
• Auto-configuration backs-off easily
• Adding custom security is easy
• No ordering issues with WebSecurityConfigurerAdapter
• RequestMatchers for static resources and actuators
• Web actuator endpoints have consistent behavior
33
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Security
• OAuth 2.0
• Moving to Spring Security 5.0
• Support for multiple client registrations
• Authorization server/Resource server support
34
Questions?
@madhurabhave23
@phillip_webb
#springone@s1p
https://github.com/mbhave/webflux-demo
https://github.com/mbhave/actuator-demo
https://github.com/mbhave/configuration-properties-demo
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