ratpack.server.ServerConfig Maven / Gradle / Ivy
/*
* Copyright 2014 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 ratpack.server;
import com.google.common.collect.ImmutableSet;
import ratpack.api.Nullable;
import ratpack.config.ConfigData;
import ratpack.config.ConfigObject;
import ratpack.file.FileSystemBinding;
import ratpack.func.Action;
import ratpack.server.internal.DefaultServerConfigBuilder;
import ratpack.server.internal.ServerEnvironment;
import javax.net.ssl.SSLContext;
import java.net.InetAddress;
import java.net.URI;
import java.util.Optional;
/**
* The configuration of the server.
*
* This object represents the basic information needed to bootstrap the server (e.g. {@link #getPort()}),
* but also provides access to any externalised config objects to be used by the application via {@link #get(String, Class)}
* (see also: {@link #getRequiredConfig()}).
* A server config object is-a {@link ConfigData} object.
*
* Server config objects are programmatically built via a {@link ServerConfigBuilder}, which can be obtained via the static methods {@link #builder()}} and {@link #embedded()}.
*/
public interface ServerConfig extends ConfigData {
/**
* The default port for Ratpack applications, {@value}.
*/
int DEFAULT_PORT = 5050;
/**
* The default max content length.
*/
int DEFAULT_MAX_CONTENT_LENGTH = 1048576;
/**
* The default number of threads an application should use.
*
* Calculated as {@code Runtime.getRuntime().availableProcessors() * 2}.
*/
int DEFAULT_THREADS = Runtime.getRuntime().availableProcessors() * 2;
/**
* Creates a builder configured for development mode and an ephemeral port.
*
* @return a server config builder
*/
static ServerConfigBuilder embedded() {
return builder().development(true).port(0);
}
static ServerConfigBuilder builder() {
return new DefaultServerConfigBuilder(ServerEnvironment.env());
}
static ServerConfig of(Action action) throws Exception {
return action.with(builder()).build();
}
/**
* The port that the application should listen to requests on.
*
* Defaults to {@value #DEFAULT_PORT}.
*
* @return The port that the application should listen to requests on.
*/
int getPort();
/**
* The address of the interface that the application should bind to.
*
* A value of null causes all interfaces to be bound. Defaults to null.
*
* @return The address of the interface that the application should bind to.
*/
@Nullable
InetAddress getAddress();
/**
* The config objects that were declared as required when this server config was built.
*
* Required config is declared via the {@link ServerConfigBuilder#require(String, Class)} when building.
* All required config is made part of the base registry (which the server registry joins with),
* which automatically makes the config objects available to the server registry.
*
*
* @return the declared required config
* @see ServerConfigBuilder#require(String, Class)
*/
ImmutableSet> getRequiredConfig();
/**
* Whether or not the server is in "development" mode.
*
* A flag for indicating to Ratpack internals that the app is under development; diagnostics and reloading are more important than performance and security.
*
* In development mode Ratpack will leak internal information through diagnostics and stacktraces by sending them to the response.
*
* @return {@code true} if the server is in "development" mode
*/
boolean isDevelopment();
/**
* The number of threads for handling application requests.
*
* If the value is greater than 0, a thread pool (of this size) will be created for servicing requests and doing computation.
* If the value is 0 (default) or less, a thread pool of size {@link Runtime#availableProcessors()} {@code * 2} will be used.
*
* This effectively sizes the {@link ratpack.exec.ExecController#getExecutor()} thread pool size.
*
* @return the number of threads for handling application requests.
*/
int getThreads();
/**
* The public address of the site used for redirects.
*
* @return The url of the public address
*/
URI getPublicAddress();
/**
* The SSL context to use if the application will serve content over HTTPS.
*
* @return The SSL context or null if the application does not use SSL.
*/
@Nullable
SSLContext getSslContext();
/**
* Whether or not the server needs client SSL authentication {@link javax.net.ssl.SSLEngine#setNeedClientAuth(boolean)}.
*
* @return whether or not the server needs client SSL authentication
*/
boolean isRequireClientSslAuth();
/**
* The max content length to use for the HttpObjectAggregator.
*
* @return The max content length as an int.
*/
int getMaxContentLength();
/**
* The connect timeout of the channel.
*
* @return The connect timeout in milliseconds
* @see setConnectTimeoutMillis
*/
Optional getConnectTimeoutMillis();
/**
* The maximum number of messages to read per read loop.
*
* If this value is greater than 1, an event loop might attempt to read multiple times to procure multiple messages.
*
* @return The maximum number of messages to read
* @see setMaxMessagesPerRead
*/
Optional getMaxMessagesPerRead();
/**
* The StandardSocketOptions.SO_RCVBUF option.
*
* @return The receive buffer size
* @see setReceiveBufferSize
*/
Optional getReceiveBufferSize();
/**
* The maximum loop count for a write operation until WritableByteChannel.write(ByteBuffer) returns a non-zero value.
*
* It is similar to what a spin lock is used for in concurrency programming. It improves memory utilization and write throughput depending on the platform that JVM runs on.
*
* @return The write spin count
* @see setWriteSpinCount
*/
Optional getWriteSpinCount();
/**
* Whether or not the base dir of the application has been set.
*
* @return whether or not the base dir of the application has been set.
*/
boolean isHasBaseDir();
/**
* The base dir of the application, which is also the initial {@link ratpack.file.FileSystemBinding}.
*
* @return The base dir of the application.
* @throws NoBaseDirException if this launch config has no base dir set.
*/
FileSystemBinding getBaseDir() throws NoBaseDirException;
}