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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.configserver;
import java.net.URI;
import java.time.Duration;
import java.util.Optional;
/**
* Interface to execute basic HTTP/HTTPS request against config server(s)
*
* @author freva
*/
public interface ConfigServerApi extends AutoCloseable {
/**
* The result of sending a request to a config server results in a jackson response or exception. If a response
* is returned, an instance of this interface is conferred to discard the result and try the next config server,
* unless it was the last attempt.
*
* @param <T> the type of the returned jackson response
*/
interface RetryPolicy<T> {
boolean tryNextConfigServer(URI configServerEndpoint, T response);
}
class Params<T> {
private Optional<Duration> connectionTimeout = Optional.empty();
private RetryPolicy<T> retryPolicy = (configServerEndpoint, response) -> false;
public Params() {}
/** Set the socket connect and read timeouts. */
public Params<T> setConnectionTimeout(Duration connectionTimeout) {
this.connectionTimeout = Optional.of(connectionTimeout);
return this;
}
public Optional<Duration> getConnectionTimeout() { return connectionTimeout; }
/** Set the retry policy to use against the config servers. */
public Params<T> setRetryPolicy(RetryPolicy<T> retryPolicy) {
this.retryPolicy = retryPolicy;
return this;
}
public RetryPolicy<T> getRetryPolicy() { return retryPolicy; }
}
<T> T get(String path, Class<T> wantedReturnType, Params<T> params);
default <T> T get(String path, Class<T> wantedReturnType) {
return get(path, wantedReturnType, new Params<>());
}
<T> T post(String path, Object bodyJsonPojo, Class<T> wantedReturnType, Params<T> params);
default <T> T post(String path, Object bodyJsonPojo, Class<T> wantedReturnType) {
return post(path, bodyJsonPojo, wantedReturnType, new Params<>());
}
<T> T put(String path, Optional<Object> bodyJsonPojo, Class<T> wantedReturnType, Params<T> params);
default <T> T put(String path, Optional<Object> bodyJsonPojo, Class<T> wantedReturnType) {
return put(path, bodyJsonPojo, wantedReturnType, new Params<>());
}
<T> T patch(String path, Object bodyJsonPojo, Class<T> wantedReturnType, Params<T> params);
default <T> T patch(String path, Object bodyJsonPojo, Class<T> wantedReturnType) {
return patch(path, bodyJsonPojo, wantedReturnType, new Params<>());
}
<T> T delete(String path, Class<T> wantedReturnType, Params<T> params);
default <T> T delete(String path, Class<T> wantedReturnType) {
return delete(path, wantedReturnType, new Params<>());
}
/** Close the underlying HTTP client and any threads this class might have started. */
@Override
void close();
}
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