diff --git a/microprofile/pom.xml b/microprofile/pom.xml new file mode 100644 index 0000000000..ce8a2d13ca --- /dev/null +++ b/microprofile/pom.xml @@ -0,0 +1,87 @@ + + + 4.0.0 + + com.baeldung + microprofile + 1.0-SNAPSHOT + war + + + UTF-8 + UTF-8 + 1.8 + 1.8 + library + ${project.build.directory}/${app.name}-service.jar + runnable + + + + + org.eclipse.microprofile + microprofile + 1.2 + provided + pom + + + + + + + maven-war-plugin + + false + pom.xml + + + + net.wasdev.wlp.maven.plugins + liberty-maven-plugin + 2.1.2 + + + io.openliberty + openliberty-runtime + 17.0.0.4 + zip + + ${basedir}/src/main/liberty/config/server.xml + ${package.file} + ${packaging.type} + false + project + + / + ${project.artifactId}-${project.version}.war + 9080 + 9443 + + + + + install-server + prepare-package + + install-server + create-server + install-feature + + + + package-server-with-apps + package + + install-apps + package-server + + + + + + + + diff --git a/microprofile/src/main/java/com/baeldung/microprofile/LibraryApplication.java b/microprofile/src/main/java/com/baeldung/microprofile/LibraryApplication.java new file mode 100644 index 0000000000..f5eccf969e --- /dev/null +++ b/microprofile/src/main/java/com/baeldung/microprofile/LibraryApplication.java @@ -0,0 +1,8 @@ +package com.baeldung.microprofile; + +import javax.ws.rs.ApplicationPath; +import javax.ws.rs.core.Application; + +@ApplicationPath("/library") +public class LibraryApplication extends Application { +} diff --git a/microprofile/src/main/java/com/baeldung/microprofile/model/Book.java b/microprofile/src/main/java/com/baeldung/microprofile/model/Book.java new file mode 100644 index 0000000000..44b7f5428d --- /dev/null +++ b/microprofile/src/main/java/com/baeldung/microprofile/model/Book.java @@ -0,0 +1,50 @@ +package com.baeldung.microprofile.model; + +public class Book { + + private String id; + private String isbn; + private String name; + private String author; + private Integer pages; + + public String getId() { + return id; + } + + public void setId(String id) { + this.id = id; + } + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public String getIsbn() { + return isbn; + } + + public void setIsbn(String isbn) { + this.isbn = isbn; + } + + public String getAuthor() { + return author; + } + + public void setAuthor(String author) { + this.author = author; + } + + public Integer getPages() { + return pages; + } + + public void setPages(Integer pages) { + this.pages = pages; + } +} diff --git a/microprofile/src/main/java/com/baeldung/microprofile/providers/BookListMessageBodyWriter.java b/microprofile/src/main/java/com/baeldung/microprofile/providers/BookListMessageBodyWriter.java new file mode 100644 index 0000000000..f7d0bfc5f7 --- /dev/null +++ b/microprofile/src/main/java/com/baeldung/microprofile/providers/BookListMessageBodyWriter.java @@ -0,0 +1,42 @@ +package com.baeldung.microprofile.providers; + +import com.baeldung.microprofile.model.Book; +import com.baeldung.microprofile.util.BookMapper; + +import javax.json.Json; +import javax.json.JsonArray; +import javax.json.JsonWriter; +import javax.ws.rs.Produces; +import javax.ws.rs.WebApplicationException; +import javax.ws.rs.core.MediaType; +import javax.ws.rs.core.MultivaluedMap; +import javax.ws.rs.ext.MessageBodyWriter; +import javax.ws.rs.ext.Provider; +import java.io.IOException; +import java.io.OutputStream; +import java.lang.annotation.Annotation; +import java.lang.reflect.Type; +import java.util.List; + +@Provider +@Produces(MediaType.APPLICATION_JSON) +public class BookListMessageBodyWriter implements MessageBodyWriter> { + + @Override + public boolean isWriteable(Class clazz, Type genericType, Annotation[] annotations, MediaType mediaType) { + return true; + } + + @Override + public long getSize(List books, Class type, Type genericType, Annotation[] annotations, MediaType mediaType) { + return 0; + } + + @Override + public void writeTo(List books, Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException { + JsonWriter jsonWriter = Json.createWriter(entityStream); + JsonArray jsonArray = BookMapper.map(books); + jsonWriter.writeArray(jsonArray); + jsonWriter.close(); + } +} diff --git a/microprofile/src/main/java/com/baeldung/microprofile/providers/BookMessageBodyReader.java b/microprofile/src/main/java/com/baeldung/microprofile/providers/BookMessageBodyReader.java new file mode 100644 index 0000000000..26ce4c1b64 --- /dev/null +++ b/microprofile/src/main/java/com/baeldung/microprofile/providers/BookMessageBodyReader.java @@ -0,0 +1,30 @@ +package com.baeldung.microprofile.providers; + +import com.baeldung.microprofile.model.Book; +import com.baeldung.microprofile.util.BookMapper; + +import javax.ws.rs.Consumes; +import javax.ws.rs.WebApplicationException; +import javax.ws.rs.core.MediaType; +import javax.ws.rs.core.MultivaluedMap; +import javax.ws.rs.ext.MessageBodyReader; +import javax.ws.rs.ext.Provider; +import java.io.IOException; +import java.io.InputStream; +import java.lang.annotation.Annotation; +import java.lang.reflect.Type; + +@Provider +@Consumes(MediaType.APPLICATION_JSON) +public class BookMessageBodyReader implements MessageBodyReader { + + @Override + public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) { + return type.equals(Book.class); + } + + @Override + public Book readFrom(Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, InputStream entityStream) throws IOException, WebApplicationException { + return BookMapper.map(entityStream); + } +} \ No newline at end of file diff --git a/microprofile/src/main/java/com/baeldung/microprofile/providers/BookMessageBodyWriter.java b/microprofile/src/main/java/com/baeldung/microprofile/providers/BookMessageBodyWriter.java new file mode 100644 index 0000000000..9bc6e89958 --- /dev/null +++ b/microprofile/src/main/java/com/baeldung/microprofile/providers/BookMessageBodyWriter.java @@ -0,0 +1,57 @@ +package com.baeldung.microprofile.providers; + +import com.baeldung.microprofile.model.Book; +import com.baeldung.microprofile.util.BookMapper; + +import javax.json.Json; +import javax.json.JsonObject; +import javax.json.JsonWriter; +import javax.ws.rs.Produces; +import javax.ws.rs.WebApplicationException; +import javax.ws.rs.core.MediaType; +import javax.ws.rs.core.MultivaluedMap; +import javax.ws.rs.ext.MessageBodyWriter; +import javax.ws.rs.ext.Provider; +import java.io.IOException; +import java.io.OutputStream; +import java.lang.annotation.Annotation; +import java.lang.reflect.Type; + +@Provider +@Produces(MediaType.APPLICATION_JSON) +public class BookMessageBodyWriter implements MessageBodyWriter { + @Override + public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) { + return type.equals(Book.class); + } + + /* + Deprecated in JAX RS 2.0 + */ + @Override + public long getSize(Book book, Class type, Type genericType, Annotation[] annotations, MediaType mediaType) { + return 0; + } + + /** + * Marsahl Book to OutputStream + * + * @param book + * @param type + * @param genericType + * @param annotations + * @param mediaType + * @param httpHeaders + * @param entityStream + * @throws IOException + * @throws WebApplicationException + */ + @Override + public void writeTo(Book book, Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException { + JsonWriter jsonWriter = Json.createWriter(entityStream); + JsonObject jsonObject = BookMapper.map(book); + jsonWriter.writeObject(jsonObject); + jsonWriter.close(); + } + +} diff --git a/microprofile/src/main/java/com/baeldung/microprofile/repo/BookManager.java b/microprofile/src/main/java/com/baeldung/microprofile/repo/BookManager.java new file mode 100644 index 0000000000..924cf0ce71 --- /dev/null +++ b/microprofile/src/main/java/com/baeldung/microprofile/repo/BookManager.java @@ -0,0 +1,53 @@ +package com.baeldung.microprofile.repo; + +import com.baeldung.microprofile.model.Book; + +import javax.enterprise.context.ApplicationScoped; +import java.time.LocalDate; +import java.time.format.DateTimeFormatter; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentMap; +import java.util.concurrent.atomic.AtomicInteger; + +@ApplicationScoped +public class BookManager { + + private DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMM"); + private AtomicInteger bookIdGenerator = new AtomicInteger(0); + + private ConcurrentMap inMemoryStore = new ConcurrentHashMap<>(); + + public BookManager() { + Book book = new Book(); + book.setId(getNextId()); + book.setName("Building Microservice With Eclipse MicroProfile"); + book.setIsbn("1"); + book.setAuthor("baeldung"); + book.setPages(420); + inMemoryStore.put(book.getId(), book); + } + + private String getNextId() { + String date = LocalDate.now().format(formatter); + return String.format("%04d-%s", bookIdGenerator.incrementAndGet(), date); + } + + public String add(Book book) { + String id = getNextId(); + book.setId(id); + inMemoryStore.put(id, book); + return id; + } + + public Book get(String id) { + return inMemoryStore.get(id); + } + + public List getAll() { + List books = new ArrayList<>(); + books.addAll(inMemoryStore.values()); + return books; + } +} diff --git a/microprofile/src/main/java/com/baeldung/microprofile/util/BookMapper.java b/microprofile/src/main/java/com/baeldung/microprofile/util/BookMapper.java new file mode 100644 index 0000000000..861b172299 --- /dev/null +++ b/microprofile/src/main/java/com/baeldung/microprofile/util/BookMapper.java @@ -0,0 +1,72 @@ +package com.baeldung.microprofile.util; + +import com.baeldung.microprofile.model.Book; + +import javax.json.*; +import java.io.InputStream; +import java.util.List; + +public class BookMapper { + + public static JsonObject map(Book book) { + JsonObjectBuilder builder = Json.createObjectBuilder(); + addValue(builder, "id", book.getId()); + addValue(builder, "isbn", book.getIsbn()); + addValue(builder, "name", book.getName()); + addValue(builder, "author", book.getAuthor()); + addValue(builder, "pages", book.getPages()); + return builder.build(); + } + + private static void addValue(JsonObjectBuilder builder, String key, Object value) { + if (value != null) { + builder.add(key, value.toString()); + } else { + builder.addNull(key); + } + } + + public static JsonArray map(List books) { + final JsonArrayBuilder arrayBuilder = Json.createArrayBuilder(); + books.forEach(book -> { + JsonObject jsonObject = map(book); + arrayBuilder.add(jsonObject); + }); + return arrayBuilder.build(); + } + + public static Book map(InputStream is) { + try(JsonReader jsonReader = Json.createReader(is)) { + JsonObject jsonObject = jsonReader.readObject(); + Book book = new Book(); + book.setId(getStringFromJson("id", jsonObject)); + book.setIsbn(getStringFromJson("isbn", jsonObject)); + book.setName(getStringFromJson("name", jsonObject)); + book.setAuthor(getStringFromJson("author", jsonObject)); + book.setPages(getIntFromJson("pages",jsonObject)); + return book; + } + } + + private static String getStringFromJson(String key, JsonObject json) { + String returnedString = null; + if (json.containsKey(key)) { + JsonString value = json.getJsonString(key); + if (value != null) { + returnedString = value.getString(); + } + } + return returnedString; + } + + private static Integer getIntFromJson(String key, JsonObject json) { + Integer returnedValue = null; + if (json.containsKey(key)) { + JsonNumber value = json.getJsonNumber(key); + if (value != null) { + returnedValue = value.intValue(); + } + } + return returnedValue; + } +} diff --git a/microprofile/src/main/java/com/baeldung/microprofile/web/BookEndpoint.java b/microprofile/src/main/java/com/baeldung/microprofile/web/BookEndpoint.java new file mode 100644 index 0000000000..13143a5644 --- /dev/null +++ b/microprofile/src/main/java/com/baeldung/microprofile/web/BookEndpoint.java @@ -0,0 +1,42 @@ +package com.baeldung.microprofile.web; + +import com.baeldung.microprofile.model.Book; +import com.baeldung.microprofile.repo.BookManager; + +import javax.enterprise.context.RequestScoped; +import javax.inject.Inject; +import javax.ws.rs.*; +import javax.ws.rs.core.MediaType; +import javax.ws.rs.core.Response; +import javax.ws.rs.core.UriBuilder; + +@Path("books") +@RequestScoped +public class BookEndpoint { + + @Inject + private BookManager bookManager; + + @GET + @Path("{id}") + @Produces(MediaType.APPLICATION_JSON) + public Response getBook(@PathParam("id") String id) { + Book book = bookManager.get(id); + return Response.ok(book).build(); + } + + @GET + @Produces(MediaType.APPLICATION_JSON) + public Response getAllBooks() { + return Response.ok(bookManager.getAll()).build(); + } + + @POST + @Consumes(MediaType.APPLICATION_JSON) + public Response add(Book book) { + String bookId = bookManager.add(book); + return Response.created( + UriBuilder.fromResource(this.getClass()).path(bookId).build()) + .build(); + } +} diff --git a/microprofile/src/main/liberty/config/server.xml b/microprofile/src/main/liberty/config/server.xml new file mode 100644 index 0000000000..2b855bee05 --- /dev/null +++ b/microprofile/src/main/liberty/config/server.xml @@ -0,0 +1,11 @@ + + + jaxrs-2.0 + cdi-1.2 + jsonp-1.0 + + + + +