de.flapdoodle.embed.process.config.ImmutableTimeoutConfig Maven / Gradle / Ivy
package de.flapdoodle.embed.process.config;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
/**
* Immutable implementation of {@link TimeoutConfig}.
*
* Use the builder to create immutable instances:
* {@code ImmutableTimeoutConfig.builder()}.
*/
@SuppressWarnings({"all"})
public final class ImmutableTimeoutConfig implements TimeoutConfig {
private final int connectionTimeout;
private final int readTimeout;
private ImmutableTimeoutConfig(ImmutableTimeoutConfig.Builder builder) {
if (builder.connectionTimeoutIsSet()) {
initShim.connectionTimeout(builder.connectionTimeout);
}
if (builder.readTimeoutIsSet()) {
initShim.readTimeout(builder.readTimeout);
}
this.connectionTimeout = initShim.getConnectionTimeout();
this.readTimeout = initShim.getReadTimeout();
this.initShim = null;
}
private ImmutableTimeoutConfig(int connectionTimeout, int readTimeout) {
this.connectionTimeout = connectionTimeout;
this.readTimeout = readTimeout;
this.initShim = null;
}
private static final byte STAGE_INITIALIZING = -1;
private static final byte STAGE_UNINITIALIZED = 0;
private static final byte STAGE_INITIALIZED = 1;
private transient volatile InitShim initShim = new InitShim();
private final class InitShim {
private byte connectionTimeoutBuildStage = STAGE_UNINITIALIZED;
private int connectionTimeout;
int getConnectionTimeout() {
if (connectionTimeoutBuildStage == STAGE_INITIALIZING) throw new IllegalStateException(formatInitCycleMessage());
if (connectionTimeoutBuildStage == STAGE_UNINITIALIZED) {
connectionTimeoutBuildStage = STAGE_INITIALIZING;
this.connectionTimeout = getConnectionTimeoutInitialize();
connectionTimeoutBuildStage = STAGE_INITIALIZED;
}
return this.connectionTimeout;
}
void connectionTimeout(int connectionTimeout) {
this.connectionTimeout = connectionTimeout;
connectionTimeoutBuildStage = STAGE_INITIALIZED;
}
private byte readTimeoutBuildStage = STAGE_UNINITIALIZED;
private int readTimeout;
int getReadTimeout() {
if (readTimeoutBuildStage == STAGE_INITIALIZING) throw new IllegalStateException(formatInitCycleMessage());
if (readTimeoutBuildStage == STAGE_UNINITIALIZED) {
readTimeoutBuildStage = STAGE_INITIALIZING;
this.readTimeout = getReadTimeoutInitialize();
readTimeoutBuildStage = STAGE_INITIALIZED;
}
return this.readTimeout;
}
void readTimeout(int readTimeout) {
this.readTimeout = readTimeout;
readTimeoutBuildStage = STAGE_INITIALIZED;
}
private String formatInitCycleMessage() {
List attributes = new ArrayList<>();
if (connectionTimeoutBuildStage == STAGE_INITIALIZING) attributes.add("connectionTimeout");
if (readTimeoutBuildStage == STAGE_INITIALIZING) attributes.add("readTimeout");
return "Cannot build TimeoutConfig, attribute initializers form cycle " + attributes;
}
}
private int getConnectionTimeoutInitialize() {
return TimeoutConfig.super.getConnectionTimeout();
}
private int getReadTimeoutInitialize() {
return TimeoutConfig.super.getReadTimeout();
}
/**
* @return The value of the {@code connectionTimeout} attribute
*/
@Override
public int getConnectionTimeout() {
InitShim shim = this.initShim;
return shim != null
? shim.getConnectionTimeout()
: this.connectionTimeout;
}
/**
* @return The value of the {@code readTimeout} attribute
*/
@Override
public int getReadTimeout() {
InitShim shim = this.initShim;
return shim != null
? shim.getReadTimeout()
: this.readTimeout;
}
/**
* Copy the current immutable object by setting a value for the {@link TimeoutConfig#getConnectionTimeout() connectionTimeout} attribute.
* A value equality check is used to prevent copying of the same value by returning {@code this}.
* @param value A new value for connectionTimeout
* @return A modified copy of the {@code this} object
*/
public final ImmutableTimeoutConfig withConnectionTimeout(int value) {
if (this.connectionTimeout == value) return this;
return new ImmutableTimeoutConfig(value, this.readTimeout);
}
/**
* Copy the current immutable object by setting a value for the {@link TimeoutConfig#getReadTimeout() readTimeout} attribute.
* A value equality check is used to prevent copying of the same value by returning {@code this}.
* @param value A new value for readTimeout
* @return A modified copy of the {@code this} object
*/
public final ImmutableTimeoutConfig withReadTimeout(int value) {
if (this.readTimeout == value) return this;
return new ImmutableTimeoutConfig(this.connectionTimeout, value);
}
/**
* This instance is equal to all instances of {@code ImmutableTimeoutConfig} that have equal attribute values.
* @return {@code true} if {@code this} is equal to {@code another} instance
*/
@Override
public boolean equals(Object another) {
if (this == another) return true;
return another instanceof ImmutableTimeoutConfig
&& equalTo(0, (ImmutableTimeoutConfig) another);
}
private boolean equalTo(int synthetic, ImmutableTimeoutConfig another) {
return connectionTimeout == another.connectionTimeout
&& readTimeout == another.readTimeout;
}
/**
* Computes a hash code from attributes: {@code connectionTimeout}, {@code readTimeout}.
* @return hashCode value
*/
@Override
public int hashCode() {
int h = 5381;
h += (h << 5) + connectionTimeout;
h += (h << 5) + readTimeout;
return h;
}
/**
* Prints the immutable value {@code TimeoutConfig} with attribute values.
* @return A string representation of the value
*/
@Override
public String toString() {
return "TimeoutConfig{"
+ "connectionTimeout=" + connectionTimeout
+ ", readTimeout=" + readTimeout
+ "}";
}
/**
* Creates an immutable copy of a {@link TimeoutConfig} value.
* Uses accessors to get values to initialize the new immutable instance.
* If an instance is already immutable, it is returned as is.
* @param instance The instance to copy
* @return A copied immutable TimeoutConfig instance
*/
public static ImmutableTimeoutConfig copyOf(TimeoutConfig instance) {
if (instance instanceof ImmutableTimeoutConfig) {
return (ImmutableTimeoutConfig) instance;
}
return ImmutableTimeoutConfig.builder()
.from(instance)
.build();
}
/**
* Creates a builder for {@link ImmutableTimeoutConfig ImmutableTimeoutConfig}.
*
* ImmutableTimeoutConfig.builder()
* .connectionTimeout(int) // optional {@link TimeoutConfig#getConnectionTimeout() connectionTimeout}
* .readTimeout(int) // optional {@link TimeoutConfig#getReadTimeout() readTimeout}
* .build();
*
* @return A new ImmutableTimeoutConfig builder
*/
public static ImmutableTimeoutConfig.Builder builder() {
return new ImmutableTimeoutConfig.Builder();
}
/**
* Builds instances of type {@link ImmutableTimeoutConfig ImmutableTimeoutConfig}.
* Initialize attributes and then invoke the {@link #build()} method to create an
* immutable instance.
* {@code Builder} is not thread-safe and generally should not be stored in a field or collection,
* but instead used immediately to create instances.
*/
public static final class Builder {
private static final long OPT_BIT_CONNECTION_TIMEOUT = 0x1L;
private static final long OPT_BIT_READ_TIMEOUT = 0x2L;
private long optBits;
private int connectionTimeout;
private int readTimeout;
private Builder() {
}
/**
* Fill a builder with attribute values from the provided {@code TimeoutConfig} instance.
* Regular attribute values will be replaced with those from the given instance.
* Absent optional values will not replace present values.
* @param instance The instance from which to copy values
* @return {@code this} builder for use in a chained invocation
*/
public final Builder from(TimeoutConfig instance) {
Objects.requireNonNull(instance, "instance");
this.connectionTimeout(instance.getConnectionTimeout());
this.readTimeout(instance.getReadTimeout());
return this;
}
/**
* Initializes the value for the {@link TimeoutConfig#getConnectionTimeout() connectionTimeout} attribute.
*
If not set, this attribute will have a default value as returned by the initializer of {@link TimeoutConfig#getConnectionTimeout() connectionTimeout}.
* @param connectionTimeout The value for connectionTimeout
* @return {@code this} builder for use in a chained invocation
*/
public final Builder connectionTimeout(int connectionTimeout) {
this.connectionTimeout = connectionTimeout;
optBits |= OPT_BIT_CONNECTION_TIMEOUT;
return this;
}
/**
* Initializes the value for the {@link TimeoutConfig#getReadTimeout() readTimeout} attribute.
*
If not set, this attribute will have a default value as returned by the initializer of {@link TimeoutConfig#getReadTimeout() readTimeout}.
* @param readTimeout The value for readTimeout
* @return {@code this} builder for use in a chained invocation
*/
public final Builder readTimeout(int readTimeout) {
this.readTimeout = readTimeout;
optBits |= OPT_BIT_READ_TIMEOUT;
return this;
}
/**
* Builds a new {@link ImmutableTimeoutConfig ImmutableTimeoutConfig}.
* @return An immutable instance of TimeoutConfig
* @throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableTimeoutConfig build() {
return new ImmutableTimeoutConfig(this);
}
private boolean connectionTimeoutIsSet() {
return (optBits & OPT_BIT_CONNECTION_TIMEOUT) != 0;
}
private boolean readTimeoutIsSet() {
return (optBits & OPT_BIT_READ_TIMEOUT) != 0;
}
}
}