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/**
* Copyright 2016 2015-2016 ZTE, Inc. and others. All rights reserved.
*
* 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.
*/
/**
* Copyright (C) 2016 ZTE, Inc. and others. All rights reserved. (ZTE)
*
* 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 org.openo.msb.wrapper.consul.option;
import static com.google.common.base.Preconditions.checkArgument;
import static org.openo.msb.wrapper.consul.option.Options.optionallyAdd;
import java.math.BigInteger;
import javax.ws.rs.client.WebTarget;
import com.google.common.base.Optional;
/**
* Container for common query options used by the Consul API.
*/
public abstract class QueryOptions implements ParamAdder {
public static final QueryOptions BLANK = ImmutableQueryOptions.builder().build();
public abstract Optional<String> getWait();
public abstract Optional<String> getToken();
public abstract Optional<BigInteger> getIndex();
public abstract Optional<String> getNear();
public ConsistencyMode getConsistencyMode() {
return ConsistencyMode.DEFAULT;
}
public boolean isBlocking() {
return getWait().isPresent();
}
public boolean hasToken() {
return getToken().isPresent();
}
void validate() {
if (isBlocking()) {
checkArgument(getIndex().isPresent(), "If wait is specified, index must also be specified");
}
}
public static ImmutableQueryOptions.Builder blockSeconds(int seconds, BigInteger index) {
return blockBuilder("s", seconds, index);
}
public static ImmutableQueryOptions.Builder blockMinutes(int minutes, BigInteger index) {
return blockBuilder("m", minutes, index);
}
private static ImmutableQueryOptions.Builder blockBuilder(String identifier, int qty, BigInteger index) {
return ImmutableQueryOptions.builder()
.wait(String.format("%s%s", qty, identifier))
.index(index);
}
@Override
public WebTarget apply(WebTarget input) {
WebTarget added = input;
switch (getConsistencyMode()) {
case CONSISTENT:
added = added.queryParam("consistent", "");
break;
case STALE:
added = added.queryParam("stale", "");
break;
}
if (isBlocking()) {
added = added.queryParam("wait", getWait().get())
.queryParam("index", String.valueOf(getIndex().get()));
}
added = optionallyAdd(added, "token", getToken());
added = optionallyAdd(added, "near", getToken());
return added;
}
}
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