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DefaultLimitsConfig.java
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DefaultLimitsConfig.java
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/*
* Copyright (c) 2019 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.base.service.config.limits;
import java.util.Objects;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.internal.utils.config.ConfigWithFallback;
import org.eclipse.ditto.internal.utils.config.WithConfigPath;
import com.typesafe.config.Config;
/**
* This class is the default implementation of {@link LimitsConfig}.
*/
@Immutable
public final class DefaultLimitsConfig implements LimitsConfig, WithConfigPath {
/**
* Path of the limits configuration settings.
*/
public static final String CONFIG_PATH = "limits";
private final long thingsMaxSize;
private final long policiesMaxSize;
private final long messagesMaxSize;
private final int thingsSearchDefaultPageSize;
private final int thingsSearchMaxPageSize;
private final int policyImportsLimit;
private DefaultLimitsConfig(final ConfigWithFallback config) {
thingsMaxSize = config.getNonNegativeBytesOrThrow(LimitsConfigValue.THINGS_MAX_SIZE);
policiesMaxSize = config.getNonNegativeBytesOrThrow(LimitsConfigValue.POLICIES_MAX_SIZE);
messagesMaxSize = config.getNonNegativeBytesOrThrow(LimitsConfigValue.MESSAGES_MAX_SIZE);
thingsSearchDefaultPageSize = config.getPositiveIntOrThrow(LimitsConfigValue.THINGS_SEARCH_DEFAULT_PAGE_SIZE);
thingsSearchMaxPageSize = config.getPositiveIntOrThrow(LimitsConfigValue.THINGS_SEARCH_MAX_PAGE_SIZE);
policyImportsLimit = config.getPositiveIntOrThrow(LimitsConfigValue.POLICY_IMPORTS_LIMIT);
}
/**
* Returns an instance of {@code DefaultLimitsConfig} based on the settings of the specified Config.
*
* @param config is supposed to provide the settings of the limits config at {@value #CONFIG_PATH}.
* @return the instance.
* @throws org.eclipse.ditto.internal.utils.config.DittoConfigError if {@code config} is invalid.
*/
public static DefaultLimitsConfig of(final Config config) {
return new DefaultLimitsConfig(ConfigWithFallback.newInstance(config, CONFIG_PATH, LimitsConfigValue.values()));
}
@Override
public long getThingsMaxSize() {
return thingsMaxSize;
}
@Override
public long getPoliciesMaxSize() {
return policiesMaxSize;
}
@Override
public long getMessagesMaxSize() {
return messagesMaxSize;
}
@Override
public int getThingsSearchDefaultPageSize() {
return thingsSearchDefaultPageSize;
}
@Override
public int getThingsSearchMaxPageSize() {
return thingsSearchMaxPageSize;
}
/**
* @return always {@value #CONFIG_PATH}.
*/
@Override
public String getConfigPath() {
return CONFIG_PATH;
}
@Override
public int getPolicyImportsLimit() {
return policyImportsLimit;
}
@Override
public boolean equals(@Nullable final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final DefaultLimitsConfig that = (DefaultLimitsConfig) o;
return thingsMaxSize == that.thingsMaxSize &&
policiesMaxSize == that.policiesMaxSize &&
messagesMaxSize == that.messagesMaxSize &&
thingsSearchDefaultPageSize == that.thingsSearchDefaultPageSize &&
thingsSearchMaxPageSize == that.thingsSearchMaxPageSize &&
policyImportsLimit == that.policyImportsLimit;
}
@Override
public int hashCode() {
return Objects.hash(thingsMaxSize, policiesMaxSize, messagesMaxSize, thingsSearchDefaultPageSize,
thingsSearchMaxPageSize);
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" +
", thingsMaxSize=" + thingsMaxSize +
", policiesMaxSize=" + policiesMaxSize +
", messagesMaxSize=" + messagesMaxSize +
", thingsSearchDefaultPageSize=" + thingsSearchDefaultPageSize +
", thingsSearchMaxPageSize=" + thingsSearchMaxPageSize +
", policyImportsLimit=" + policyImportsLimit +
"]";
}
}