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Render binary data uploaded to /render via POST.
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This commit is contained in:
Manuel Friedli 2021-02-12 02:44:32 +01:00
parent a63d440de5
commit cd29c6fe75
3 changed files with 61 additions and 4 deletions
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2
labyrinth-server.iml
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@ -12,7 +12,7 @@
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" name="Maven: ch.fritteli.labyrinth:labyrinth-generator:0.0.1" level="project" />
<orderEntry type="module" module-name="labyrinth-generator" />
<orderEntry type="library" name="Maven: org.apache.pdfbox:pdfbox:2.0.20" level="project" />
<orderEntry type="library" name="Maven: org.apache.pdfbox:fontbox:2.0.20" level="project" />
<orderEntry type="library" name="Maven: commons-logging:commons-logging:1.2" level="project" />

2
pom.xml
View file

@ -18,7 +18,7 @@
<dependency>
<groupId>ch.fritteli.labyrinth</groupId>
<artifactId>labyrinth-generator</artifactId>
<version>0.0.1</version>
<version>0.0.2-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>io.vavr</groupId>

61
src/main/java/ch/fritteli/labyrinth/server/LabyrinthServer.java
View file

@ -4,10 +4,16 @@ import ch.fritteli.labyrinth.generator.model.Labyrinth;
import ch.fritteli.labyrinth.generator.renderer.html.HTMLRenderer;
import ch.fritteli.labyrinth.generator.renderer.pdf.PDFRenderer;
import ch.fritteli.labyrinth.generator.renderer.text.TextRenderer;
import ch.fritteli.labyrinth.generator.serialization.SerializerDeserializer;
import com.sun.net.httpserver.Headers;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpServer;
import io.vavr.collection.*;
import io.vavr.collection.HashMap;
import io.vavr.collection.HashSet;
import io.vavr.collection.List;
import io.vavr.collection.Map;
import io.vavr.collection.Set;
import io.vavr.collection.Stream;
import io.vavr.control.Option;
import io.vavr.control.Try;
import lombok.Getter;
@ -28,7 +34,12 @@ public class LabyrinthServer {
public LabyrinthServer(@NonNull final ServerConfig config) throws IOException {
this.httpServer = HttpServer.create(new InetSocketAddress(config.getAddress(), config.getPort()), 5);
this.httpServer.createContext("/", exchange -> {
exchange.getResponseHeaders().add("Location", "/create");
exchange.sendResponseHeaders(302, -1);
});
this.httpServer.createContext("/create", this::handleCreate);
this.httpServer.createContext("/render", this::handleRender);
}
public static Option<LabyrinthServer> createAndStartServer() {
@ -131,6 +142,51 @@ public class LabyrinthServer {
exchange.close();
}
private void handleRender(final HttpExchange exchange) throws IOException {
try {
log.debug("Handling request to {}", exchange.getRequestURI());
final String requestMethod = exchange.getRequestMethod();
if (!requestMethod.equals("POST")) {
exchange.getResponseBody().close();
exchange.sendResponseHeaders(405, -1);
return;
}
final byte[] bytes = exchange.getRequestBody().readAllBytes();
@NonNull final Labyrinth labyrinth;
try {
labyrinth = SerializerDeserializer.deserialize(bytes);
} catch (Exception e) {
e.printStackTrace();
throw e;
}
OutputType output = exchange.getRequestHeaders()
.get("Accept")
.contains("text/html") ?
OutputType.HTML :
OutputType.TEXT_PLAIN;
final byte[] render;
final Headers responseHeaders = exchange.getResponseHeaders();
try {
render = output.render(labyrinth);
} catch (Exception e) {
responseHeaders.add("Content-type", "text/plain; charset=UTF-8");
exchange.sendResponseHeaders(500, 0);
final OutputStream responseBody = exchange.getResponseBody();
responseBody.write(("Error: " + e).getBytes(StandardCharsets.UTF_8));
responseBody.flush();
return;
}
responseHeaders.add("Content-type", output.getContentType());
exchange.sendResponseHeaders(200, 0);
final OutputStream responseBody = exchange.getResponseBody();
responseBody.write(render);
responseBody.flush();
} finally {
exchange.close();
}
}
private enum RequestParameter {
WIDTH("w", "width"),
HEIGHT("h", "height"),
@ -154,7 +210,8 @@ public class LabyrinthServer {
private enum OutputType {
TEXT_PLAIN("text/plain; charset=UTF-8", labyrinth -> TextRenderer.newInstance().render(labyrinth).getBytes(StandardCharsets.UTF_8), "t", "text"),
HTML("text/html", labyrinth -> HTMLRenderer.newInstance().render(labyrinth).getBytes(StandardCharsets.UTF_8), "h", "html"),
PDF("application/pdf", labyrinth -> PDFRenderer.newInstance().render(labyrinth), "p", "pdf");
PDF("application/pdf", labyrinth -> PDFRenderer.newInstance().render(labyrinth), "p", "pdf"),
BINARY("application/octet-stream", SerializerDeserializer::serialize, "b", "binary");
@Getter
@NonNull
private final String contentType;