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全链路灰度

轻量级的灰度&配置平台｜得物技术

import java.util.*;
import java.util.stream.Collectors;

// 灰度数据类型枚举
enum GrayDataType {
    VERSION("version"),
    STRING("string"),
    SEGMENT("segment"),
    NUMBER("number"),
    NONE("none");

    private final String type;

    GrayDataType(String type) {
        this.type = type;
    }

    public String getType() {
        return type;
    }
}

// 灰度规则枚举
enum PredicateType {
    IS_IN("in"),
    IS_NOT_IN("notIn"),
    REGEX("regex"),
    NREGEX("nregex"),
    EQ("eq"),
    NEQ("neq"),
    EQUAL_TO("="),
    NOT_EQUAL_TO("!="),
    GREATER_THAN(">"),
    GREATER_OR_EQUAL(">="),
    LESS_THAN("<"),
    LESS_OR_EQUAL("<="),
    NONE("none");

    private final String predicate;

    PredicateType(String predicate) {
        this.predicate = predicate;
    }

    public String getPredicate() {
        return predicate;
    }
}

// 灰度条件
class Condition {
    private String type;
    private String subject;
    private String predicate;
    private List<Object> objects;

    // 省略构造函数、getter和setter
}

// 灰度规则
class Rule {
    private List<Condition> conditions;

    // 省略构造函数、getter和setter
}

// 灰度开关
class Toggle {
    private Integer fullGray;
    private Integer enabled;
    private List<Rule> rules;

    // 省略构造函数、getter和setter

    // 判断是否命中灰度
    public boolean hitGray(Map<String, Object> attrs) {
        // 这里只是一个简化示例，实际逻辑会更复杂
        return rules.stream().anyMatch(rule -> rule.conditions.stream().allMatch(condition -> {
            Object attrValue = attrs.get(condition.getSubject());
            switch (condition.getPredicate()) {
                case "eq":
                    return Objects.equals(attrValue, condition.objects.get(0));
                // 可以添加更多的case来处理不同的PredicateType
                default:
                    return false;
            }
        }));
    }
}

// 灰度服务接口
interface GrayService {
    boolean hitGray(String sceneKey, Map<String, Object> attrs);
}

// 简易Demo
public class GrayDemo {
    public static void main(String[] args) {
        Map<String, Object> attrs = new HashMap<>();
        attrs.put("userLevel", "VIP");
        attrs.put("version", "1.2.3");

        // 创建灰度开关示例
        Toggle toggle = new Toggle();
        toggle.setEnabled(1);
        toggle.setFullGray(0);
        List<Rule> rules = new ArrayList<>();
        Rule rule = new Rule();
        List<Condition> conditions = new ArrayList<>();
        Condition condition = new Condition();
        condition.setSubject("userLevel");
        condition.setPredicate("eq");
        condition.setObjects(Arrays.asList("VIP"));
        rules.add(rule);
        toggle.setRules(rules);

        // 判断是否命中灰度
        GrayService grayService = (sceneKey, attrsParam) -> toggle.hitGray(attrsParam);
        boolean isHit = grayService.hitGray("sceneKey1", attrs);
        System.out.println("Is hit gray: " + isHit);
    }
}