io.appform.ranger.http.servicefinder.HttpNodeDataSource Maven / Gradle / Ivy

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/*
 * Copyright 2024 Authors, Flipkart Internet Pvt. Ltd.
 *
 * 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 io.appform.ranger.http.servicefinder;

import io.appform.ranger.core.model.NodeDataSource;
import io.appform.ranger.core.model.Service;
import io.appform.ranger.core.model.ServiceNode;
import io.appform.ranger.http.common.HttpNodeDataStoreConnector;
import io.appform.ranger.http.config.HttpClientConfig;
import io.appform.ranger.http.serde.HTTPResponseDataDeserializer;
import lombok.extern.slf4j.Slf4j;

import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;

/**
 *
 */
@Slf4j
public class HttpNodeDataSource> extends HttpNodeDataStoreConnector implements NodeDataSource {

    private final Service service;
    private final AtomicBoolean upstreamAvailable = new AtomicBoolean(true);
    private final ScheduledExecutorService resetter = Executors.newSingleThreadScheduledExecutor();

    public HttpNodeDataSource(
            final Service service,
            final HttpClientConfig config,
            final HttpCommunicator httpCommunicator) {
        super(config, httpCommunicator);
        Objects.requireNonNull(config, "client config has not been set for node data");
        Objects.requireNonNull(httpCommunicator, "http communicator has not been set for node data");
        this.service = service;
        resetter.scheduleWithFixedDelay(() -> upstreamAvailable.set(true), 0, 60, TimeUnit.SECONDS);
    }

    @Override
    public Optional>> refresh(D deserializer) {
        return Optional.of(httpCommunicator.listNodes(service, deserializer));
    }

    @Override
    public boolean isActive() {
        return upstreamAvailable.get();
    }
}