com.github.dockerjava.api.model.Ports Maven / Gradle / Ivy
package com.github.dockerjava.api.model;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonValue;
import lombok.EqualsAndHashCode;
import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.stream.Collectors;
import java.util.stream.Stream;
/**
* A container for port bindings, made available as a {@link Map} via its {@link #getBindings()} method.
*
* Note: This is an abstraction used for querying existing port bindings from a container configuration. It is not to be confused with
* the {@link PortBinding} abstraction used for adding new port bindings to a container.
*
* @see HostConfig#getPortBindings()
* @see NetworkSettings#getPorts()
*/
public class Ports implements Serializable {
private static final long serialVersionUID = 1L;
private final Map ports = new HashMap<>();
/**
* Creates a {@link Ports} object with no {@link PortBinding}s. Use {@link #bind(ExposedPort, Binding)} or {@link #add(PortBinding...)}
* to add {@link PortBinding}s.
*/
public Ports() {
}
/**
* Creates a {@link Ports} object with an initial {@link PortBinding} for the specified {@link ExposedPort} and {@link Binding}. Use
* {@link #bind(ExposedPort, Binding)} or {@link #add(PortBinding...)} to add more {@link PortBinding}s.
*/
public Ports(ExposedPort exposedPort, Binding host) {
bind(exposedPort, host);
}
public Ports(PortBinding... portBindings) {
add(portBindings);
}
/**
* Adds a new {@link PortBinding} for the specified {@link ExposedPort} and {@link Binding} to the current bindings.
*/
public void bind(ExposedPort exposedPort, Binding binding) {
if (ports.containsKey(exposedPort)) {
Binding[] bindings = ports.get(exposedPort);
Binding[] newBindings = new Binding[bindings.length + 1];
System.arraycopy(bindings, 0, newBindings, 0, bindings.length);
newBindings[newBindings.length - 1] = binding;
ports.put(exposedPort, newBindings);
} else {
if (binding == null) {
ports.put(exposedPort, null);
} else {
ports.put(exposedPort, new Binding[] {binding});
}
}
}
/**
* Adds the specified {@link PortBinding}(s) to the list of {@link PortBinding}s.
*/
public void add(PortBinding... portBindings) {
for (PortBinding binding : portBindings) {
bind(binding.getExposedPort(), binding.getBinding());
}
}
@Override
public String toString() {
return ports.toString();
}
/**
* Returns the port bindings in the format used by the Docker remote API, i.e. the {@link Binding}s grouped by {@link ExposedPort}.
*
* @return the port bindings as a {@link Map} that contains one or more {@link Binding}s per {@link ExposedPort}.
*/
public Map getBindings() {
return ports;
}
// public PortBinding[] getBindingsAsArray() {
// List bindings = new ArrayList<>();
// for(Map.Entry entry: ports.entrySet()) {
// for(Ports.Binding binding : entry.getValue()) {
// bindings.add(new PortBinding(binding, entry.getKey()));
// }
// }
// return bindings.toArray(new PortBinding[bindings.size()]);
// }
/**
* A {@link Binding} represents a socket on the Docker host that is used in a {@link PortBinding}. It is characterized by an
* {@link #getHostIp() IP address} and a {@link #getHostPortSpec() port spec}. Both properties may be null in order to
* let Docker assign them dynamically/using defaults.
*
* @see Ports#bind(ExposedPort, Binding)
* @see ExposedPort
*/
@EqualsAndHashCode
public static class Binding extends DockerObject implements Serializable {
private static final long serialVersionUID = 1L;
/**
* Creates a {@link Binding} for the given {@link #getHostPortSpec() port spec}, leaving the {@link #getHostIp() IP address}
* undefined.
*
* @see Ports#bind(ExposedPort, Binding)
* @see ExposedPort
*/
public static Binding bindPortSpec(String portSpec) {
return new Binding(null, portSpec);
}
/**
* Creates a {@link Binding} for the given {@link #getHostIp() IP address}, leaving the {@link #getHostPortSpec() port spec}
* undefined.
*/
public static Binding bindIp(String hostIp) {
return new Binding(hostIp, null);
}
/**
* Creates a {@link Binding} for the given {@link #getHostIp() IP address} and port number.
*/
public static Binding bindIpAndPort(String hostIp, int port) {
return new Binding(hostIp, "" + port);
}
/**
* Creates a {@link Binding} for the given {@link #getHostIp() IP address} and port range.
*/
public static Binding bindIpAndPortRange(String hostIp, int lowPort, int highPort) {
return new Binding(hostIp, lowPort + "-" + highPort);
}
/**
* Creates a {@link Binding} for the given port range, leaving the {@link #getHostIp() IP address}
* undefined.
*/
public static Binding bindPortRange(int lowPort, int highPort) {
return bindIpAndPortRange(null, lowPort, highPort);
}
/**
* Creates a {@link Binding} for the given port leaving the {@link #getHostIp() IP address}
* undefined.
*/
public static Binding bindPort(int port) {
return bindIpAndPort(null, port);
}
/**
* Creates an empty {@link Binding}.
*/
public static Binding empty() {
return new Binding(null, null);
}
private final String hostIp;
private final String hostPortSpec;
/**
* Creates a {@link Binding} for the given {@link #getHostIp() host IP address} and {@link #getHostPortSpec() host port spec}.
*
* @see Ports#bind(ExposedPort, Binding)
* @see ExposedPort
*/
public Binding(String hostIp, String hostPortSpec) {
this.hostIp = hostIp == null || hostIp.length() == 0 ? null : hostIp;
this.hostPortSpec = hostPortSpec;
}
/**
* @return the IP address on the Docker host. May be null, in which case Docker will bind the port to all interfaces (
* 0.0.0.0).
*/
public String getHostIp() {
return hostIp;
}
/**
* @return the port spec for the binding on the Docker host. May reference a single port ("1234"), a port range ("1234-2345") or
* null, in which case Docker will dynamically assign a port.
*/
public String getHostPortSpec() {
return hostPortSpec;
}
/**
* Parses a textual host and port specification (as used by the Docker CLI) to a {@link Binding}.
*
* Legal syntax: IP|IP:portSpec|portSpec where portSpec is either a single port or a port range
*
* @param serialized
* serialized the specification, e.g. 127.0.0.1:80
* @return a {@link Binding} matching the specification
* @throws IllegalArgumentException
* if the specification cannot be parsed
*/
public static Binding parse(String serialized) throws IllegalArgumentException {
try {
if (serialized.isEmpty()) {
return Binding.empty();
}
String[] parts = serialized.split(":");
switch (parts.length) {
case 2: {
return new Binding(parts[0], parts[1]);
}
case 1: {
return parts[0].contains(".") ? Binding.bindIp(parts[0]) : Binding.bindPortSpec(parts[0]);
}
default: {
throw new IllegalArgumentException();
}
}
} catch (Exception e) {
throw new IllegalArgumentException("Error parsing Binding '" + serialized + "'");
}
}
/**
* Returns a string representation of this {@link Binding} suitable for inclusion in a JSON message. The format is
* [IP:]Port, like the argument in {@link #parse(String)}.
*
* @return a string representation of this {@link Binding}
*/
@Override
public String toString() {
if (hostIp == null || hostIp.length() == 0) {
return hostPortSpec;
} else if (hostPortSpec == null) {
return hostIp;
} else {
return hostIp + ":" + hostPortSpec;
}
}
}
@JsonCreator
public static Ports fromPrimitive(Map>> map) {
Ports out = new Ports();
for (Entry>> entry : map.entrySet()) {
ExposedPort exposedPort = ExposedPort.parse(entry.getKey());
if (entry.getValue() == null) {
out.bind(exposedPort, null);
} else {
for (Map binding : entry.getValue()) {
out.bind(exposedPort, new Binding(binding.get("HostIp"), binding.get("HostPort")));
}
}
}
return out;
}
@JsonValue
public Map>> toPrimitive() {
// Use reduce-like collect to be able to put nulls into the values
return ports.entrySet().stream().collect(
HashMap::new,
(map, entry) -> {
List> value = entry.getValue() == null ? null : Stream.of(entry.getValue())
.map(binding -> {
Map result = new HashMap<>();
result.put("HostIp", binding.getHostIp() == null ? "" : binding.getHostIp());
result.put("HostPort", binding.getHostPortSpec() == null ? "" : binding.getHostPortSpec());
return result;
})
.collect(Collectors.toList());
map.put(entry.getKey().toString(), value);
},
HashMap::putAll
);
}
}