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package org.zodiac.sentinel.base.cluster.parser;

import com.alibaba.csp.sentinel.cluster.ClusterStateManager;
import com.alibaba.csp.sentinel.datasource.Converter;
import com.alibaba.csp.sentinel.log.RecordLog;
import com.alibaba.csp.sentinel.util.AppNameUtil;

import java.util.Set;

import org.zodiac.commons.json.JsonTypeReference;
import org.zodiac.commons.util.serialize.JsonUtil;
import org.zodiac.sdk.toolkit.util.AssertUtil;
import org.zodiac.sentinel.base.constants.SentinelBaseConstants;

public class ClusterStateAssignParser implements Converter {

    private final String namespacePrefix;

    public ClusterStateAssignParser() {
        this(SentinelBaseConstants.NS_PREFIX);
    }

    public ClusterStateAssignParser(String namespacePrefix) {
        this.namespacePrefix = AssertUtil.notBlank(namespacePrefix, "namespace prefix % is blank", namespacePrefix);
    }

    @Override
    public Integer convert(String source) {
        if (source == null) {
            return null;
        }
        RecordLog.info("[ClusterAssignStateParser] Get data: {}", source);
        Set nameSpaceList = JsonUtil.jsonToObjectWithType(source, new JsonTypeReference>() {});
        if (nameSpaceList == null || nameSpaceList.isEmpty()) {
            return ClusterStateManager.CLUSTER_NOT_STARTED;
        }
        return extractMode(nameSpaceList);
    }

    protected final String getNamespacePrefix() {
        return namespacePrefix;
    }

    private int extractMode(Set nameSpaceList) {
        if (nameSpaceList == null || nameSpaceList.isEmpty()) {
            return ClusterStateManager.CLUSTER_NOT_STARTED;
        }
        String projectName = AppNameUtil.getAppName();
        if (nameSpaceList.contains(getNamespacePrefix() + projectName)) {
            return ClusterStateManager.CLUSTER_CLIENT;
        }
        return ClusterStateManager.CLUSTER_NOT_STARTED;
    }

}