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add support for simple (non-Flux) types

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add objectToStringHttpMessageConverter

CompilerController accepts parameterized types
This commit is contained in:
markfisher
2017-02-20 10:31:22 -05:00
parent 22cab6a3f1
commit 19fd056a5e
30 changed files with 717 additions and 83 deletions
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38
spring-cloud-function-samples/spring-cloud-function-sample/src/main/java/com/example/SampleApplication.java
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@@ -23,22 +23,19 @@ import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.function.compiler.FunctionCompiler;
import org.springframework.cloud.function.compiler.proxy.LambdaCompilingFunction;
import org.springframework.cloud.function.context.FunctionScan;
import org.springframework.context.annotation.Bean;
import org.springframework.core.io.ByteArrayResource;
import reactor.core.publisher.Flux;
@FunctionScan
@SpringBootApplication
public class SampleApplication {
@Bean
public Function<Flux<String>, Flux<String>> uppercase() {
return flux -> flux.map(value -> value.toUpperCase());
}
@Bean
public Supplier<Flux<String>> words() {
return () -> Flux.fromArray(new String[] { "foo", "bar" });
public Function<String, String> uppercase() {
return value -> value.toUpperCase();
}
@Bean
@@ -47,18 +44,35 @@ public class SampleApplication {
}
@Bean
public <T, R> FunctionCompiler<T, R> compiler() {
return new FunctionCompiler<>();
public Supplier<String> hello() {
return () -> "hello";
}
@Bean
public Function<Flux<String>, Flux<String>> compiledUppercase(FunctionCompiler<Flux<String>, Flux<String>> compiler) {
String lambda = "f -> f.map(o -> o.toString().toUpperCase())";
public Supplier<Flux<String>> words() {
return () -> Flux.fromArray(new String[] { "foo", "bar" });
}
@Bean
public Function<String, String> compiledUppercase(FunctionCompiler<String, String> compiler) {
String lambda = "s -> s.toUpperCase()";
LambdaCompilingFunction<String, String> function = new LambdaCompilingFunction<>(new ByteArrayResource(lambda.getBytes()), compiler);
function.setTypeParameterizations("String", "String");
return function;
}
@Bean
public Function<Flux<String>, Flux<String>> compiledLowercase(FunctionCompiler<Flux<String>, Flux<String>> compiler) {
String lambda = "f->f.map(o->o.toString().toLowerCase())";
return new LambdaCompilingFunction<>(new ByteArrayResource(lambda.getBytes()), compiler);
}
@Bean
public <T, R> FunctionCompiler<T, R> compiler() {
return new FunctionCompiler<>();
}
public static void main(String[] args) throws Exception {
SpringApplication.run(SampleApplication.class, args);
}
}

30
spring-cloud-function-samples/spring-cloud-function-sample/src/main/java/com/example/functions/CharCounter.java Normal file
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@@ -0,0 +1,30 @@
/*
* Copyright 2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.functions;
import java.util.function.Function;
/**
* @author Mark Fisher
*/
public class CharCounter implements Function<String, Integer> {
@Override
public Integer apply(String word) {
return word.length();
}
}

32
spring-cloud-function-samples/spring-cloud-function-sample/src/main/java/com/example/functions/Exclaimer.java Normal file
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@@ -0,0 +1,32 @@
/*
* Copyright 2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.functions;
import java.util.function.Function;
import reactor.core.publisher.Flux;
/**
* @author Mark Fisher
*/
public class Exclaimer implements Function<Flux<String>, Flux<String>> {
@Override
public Flux<String> apply(Flux<String> words) {
return words.map(word->word+"!!!");
}
}

30
spring-cloud-function-samples/spring-cloud-function-sample/src/main/java/com/example/functions/Greeter.java Normal file
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@@ -0,0 +1,30 @@
/*
* Copyright 2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.functions;
import java.util.function.Function;
/**
* @author Mark Fisher
*/
public class Greeter implements Function<String, String> {
@Override
public String apply(String name) {
return "Hello " + name;
}
}

84
spring-cloud-function-samples/spring-cloud-function-sample/src/test/java/com/example/FunctionTests.java Normal file
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@@ -0,0 +1,84 @@
/*
* Copyright 2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example;
import static org.junit.Assert.assertEquals;
import java.util.List;
import org.junit.Test;
import com.example.functions.CharCounter;
import com.example.functions.Exclaimer;
import com.example.functions.Greeter;
import reactor.core.publisher.Flux;
public class FunctionTests {
private final SampleApplication functions = new SampleApplication();
@Test
public void testUppercase() {
String output = functions.uppercase().apply("foobar");
assertEquals("FOOBAR", output);
}
@Test
public void testLowercase() {
Flux<String> output = functions.lowercase().apply(Flux.just("FOO", "BAR"));
List<String> results = output.collectList().block();
assertEquals(2, results.size());
assertEquals("foo", results.get(0));
assertEquals("bar", results.get(1));
}
@Test
public void testHello() {
String output = functions.hello().get();
assertEquals("hello", output);
}
@Test
public void testWords() {
Flux<String> output = functions.words().get();
List<String> results = output.collectList().block();
assertEquals(2, results.size());
assertEquals("foo", results.get(0));
assertEquals("bar", results.get(1));
}
@Test
public void testGreeter() {
assertEquals("Hello World", new Greeter().apply("World"));
}
@Test
public void testExclaimer() {
Flux<String> input = Flux.just("foo", "bar");
Flux<String> output = new Exclaimer().apply(input);
List<String> results = output.collectList().block();
assertEquals(2, results.size());
assertEquals("foo!!!", results.get(0));
assertEquals("bar!!!", results.get(1));
}
@Test
public void testCharCounter() {
assertEquals((Integer) 21, new CharCounter().apply("this is 21 chars long"));
}
}

102
spring-cloud-function-samples/spring-cloud-function-sample/src/test/java/com/example/SampleApplicationTests.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2016 the original author or authors.
* Copyright 2016-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,44 +13,126 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example;
import static org.junit.Assert.assertEquals;
import java.util.List;
import java.util.function.Function;
import java.util.function.Supplier;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import reactor.core.publisher.Flux;
@RunWith(SpringRunner.class)
@SpringBootTest(properties = "spring.cloud.function.scan.packages=com.example.functions")
public class SampleApplicationTests {
private final SampleApplication functions = new SampleApplication();
@Test
public void contextLoads() {
}
@Autowired
private Function<String, String> uppercase;
@Test
public void testUppercase() {
Flux<String> output = functions.uppercase().apply(Flux.just("foo", "bar"));
List<String> results = output.collectList().block();
assertEquals(2, results.size());
assertEquals("FOO", results.get(0));
assertEquals("BAR", results.get(1));
String output = this.uppercase.apply("foobar");
assertEquals("FOOBAR", output);
}
@Autowired
private Function<Flux<String>, Flux<String>> lowercase;
@Test
public void testLowercase() {
Flux<String> output = functions.lowercase().apply(Flux.just("FOO", "BAR"));
Flux<String> output = this.lowercase.apply(Flux.just("FOO", "BAR"));
List<String> results = output.collectList().block();
assertEquals(2, results.size());
assertEquals("foo", results.get(0));
assertEquals("bar", results.get(1));
}
@Autowired
private Supplier<String> hello;
@Test
public void testHello() {
String output = this.hello.get();
assertEquals("hello", output);
}
@Autowired
private Supplier<Flux<String>> words;
@Test
public void testWords() {
Flux<String> output = functions.words().get();
Flux<String> output = this.words.get();
List<String> results = output.collectList().block();
assertEquals(2, results.size());
assertEquals("foo", results.get(0));
assertEquals("bar", results.get(1));
}
}
@Autowired
private Function<String, String> compiledUppercase;
@Test
public void testCompiledUppercase() {
String output = this.compiledUppercase.apply("foobar");
assertEquals("FOOBAR", output);
}
@Autowired
private Function<Flux<String>, Flux<String>> compiledLowercase;
@Test
public void testCompiledLowercase() {
Flux<String> input = Flux.just("FOO", "BAR");
Flux<String> output = this.compiledLowercase.apply(input);
List<String> results = output.collectList().block();
assertEquals(2, results.size());
assertEquals("foo", results.get(0));
assertEquals("bar", results.get(1));
}
// the following are contributed via @FunctionScan:
@Autowired
private Function<String, String> greeter;
@Test
public void testGreeter() {
String greeting = this.greeter.apply("World");
assertEquals("Hello World", greeting);
}
@Autowired
private Function<Flux<String>, Flux<String>> exclaimer;
@Test
public void testExclaimer() {
Flux<String> input = Flux.just("foo", "bar");
Flux<String> output = this.exclaimer.apply(input);
List<String> results = output.collectList().block();
assertEquals(2, results.size());
assertEquals("foo!!!", results.get(0));
assertEquals("bar!!!", results.get(1));
}
@Autowired
private Function<String, Integer> charCounter;
@Test
public void testCharCounter() {
Integer length = this.charCounter.apply("the quick brown fox");
assertEquals(new Integer(19), length);
}
}