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https://gitee.com/mateos/mateclaw.git
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feat(system): add runtime-toggleable feature flag store
This commit is contained in:
matevip
parent
d0706239ea
commit
4f96a46900
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package vip.mate.system.featureflag;
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import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
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import jakarta.validation.constraints.Max;
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import jakarta.validation.constraints.Min;
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import jakarta.validation.constraints.NotBlank;
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import lombok.Data;
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import lombok.RequiredArgsConstructor;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.PutMapping;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import vip.mate.common.result.R;
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import vip.mate.system.featureflag.repository.FeatureFlagMapper;
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import java.util.List;
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/**
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* Admin endpoints for runtime feature-flag toggling.
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*
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* <p>Authn / authz are delegated to the global security configuration:
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* the JWT filter populates the principal, and the controller method runs
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* inside the standard admin-role guard. Edit access should be restricted
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* to operators; everyday users have no business toggling these.
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*
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* @author MateClaw Team
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*/
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@RestController
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@RequestMapping("/api/v1/feature-flags")
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@RequiredArgsConstructor
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public class FeatureFlagController {
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private final FeatureFlagService service;
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private final FeatureFlagMapper mapper;
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/** Lists every flag currently registered, including disabled and whitelisted ones. */
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@GetMapping
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public R<List<FeatureFlagEntity>> list() {
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return R.ok(mapper.selectList(null));
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}
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/**
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* Updates one flag in place. Only fields explicitly set in the request
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* body are touched; unspecified fields preserve their current values.
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*/
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@PutMapping("/{flagKey}")
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public R<Void> update(@PathVariable @NotBlank String flagKey,
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@RequestBody UpdateRequest req) {
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FeatureFlagEntity flag = mapper.selectOne(
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new LambdaQueryWrapper<FeatureFlagEntity>()
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.eq(FeatureFlagEntity::getFlagKey, flagKey));
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if (flag == null) {
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return R.fail("Unknown flag: " + flagKey);
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}
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if (req.getEnabled() != null) {
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flag.setEnabled(req.getEnabled());
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}
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if (req.getDescription() != null) {
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flag.setDescription(req.getDescription());
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}
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if (req.getWhitelistKbIds() != null) {
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flag.setWhitelistKbIds(req.getWhitelistKbIds());
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}
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if (req.getWhitelistUserIds() != null) {
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flag.setWhitelistUserIds(req.getWhitelistUserIds());
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}
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if (req.getRolloutPercent() != null) {
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flag.setRolloutPercent(req.getRolloutPercent());
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}
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mapper.updateById(flag);
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service.invalidate();
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return R.ok();
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}
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/** Body for {@link #update(String, UpdateRequest)}. */
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@Data
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public static class UpdateRequest {
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private Boolean enabled;
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private String description;
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private String whitelistKbIds;
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private String whitelistUserIds;
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@Min(0)
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@Max(100)
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private Integer rolloutPercent;
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}
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}
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package vip.mate.system.featureflag;
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import com.baomidou.mybatisplus.annotation.FieldFill;
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import com.baomidou.mybatisplus.annotation.IdType;
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import com.baomidou.mybatisplus.annotation.TableField;
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import com.baomidou.mybatisplus.annotation.TableId;
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import com.baomidou.mybatisplus.annotation.TableLogic;
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import com.baomidou.mybatisplus.annotation.TableName;
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import lombok.Data;
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import java.time.LocalDateTime;
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/**
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* One row in the runtime feature-flag store.
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*
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* <p>Backed by {@code mate_feature_flag}. Read/write paths go through
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* {@link FeatureFlagService}; no service should query the table directly.
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*
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* @author MateClaw Team
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*/
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@Data
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@TableName("mate_feature_flag")
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public class FeatureFlagEntity {
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@TableId(type = IdType.AUTO)
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private Long id;
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/** Stable identifier; convention is {@code <module>.<capability>.enabled}. */
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private String flagKey;
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/** Master switch. When false, all evaluations short-circuit to false. */
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private Boolean enabled;
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private String description;
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/** Comma-separated KB ids; null/blank = applies to all KBs. */
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private String whitelistKbIds;
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/** Comma-separated user ids; null/blank = applies to all users. */
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private String whitelistUserIds;
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/** Percentage rollout (0..100). Only consulted when both whitelists are blank. */
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private Integer rolloutPercent;
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@TableField(fill = FieldFill.INSERT)
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private LocalDateTime createTime;
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@TableField(fill = FieldFill.INSERT_UPDATE)
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private LocalDateTime updateTime;
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@TableLogic
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private Integer deleted;
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}
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package vip.mate.system.featureflag;
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import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
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import jakarta.annotation.PostConstruct;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.scheduling.annotation.Scheduled;
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import org.springframework.stereotype.Service;
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import vip.mate.system.featureflag.repository.FeatureFlagMapper;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.stream.Collectors;
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/**
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* Runtime-toggleable feature-flag store with in-memory caching.
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*
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* <p>Reads are O(1) once the cache is warm; the cache refreshes on a
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* configurable timer (default 30 s) and immediately on admin write via
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* {@link #invalidate()}. Multi-instance deployments converge within one
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* refresh tick; admin writes from one instance are not pushed to peers
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* (acceptable for a coarse-grained flag system).
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*
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* <p>Evaluation order:
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* <ol>
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* <li>If {@code enabled == false}, return false.</li>
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* <li>If {@code whitelist_kb_ids} is set and the context has a kbId,
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* require kb membership; absence in the whitelist returns false.</li>
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* <li>Same for {@code whitelist_user_ids}.</li>
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* <li>If both whitelists are blank and {@code rollout_percent} is in
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* (0, 100), use a deterministic hash of the context's keying value
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* to gate.</li>
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* <li>Otherwise return true.</li>
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* </ol>
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*
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* <p>Unknown flags evaluate to false (fail-closed). This makes it safe to
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* remove a flag from the seed list: callers see the feature as disabled
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* until the flag is re-introduced.
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*
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* @author MateClaw Team
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*/
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@Slf4j
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@Service
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@RequiredArgsConstructor
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public class FeatureFlagService {
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private static final FeatureFlagEntity MISSING = new FeatureFlagEntity();
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private final FeatureFlagMapper mapper;
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/** flagKey → resolved entity. {@link #MISSING} sentinel marks "not in DB". */
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private final ConcurrentHashMap<String, FeatureFlagEntity> cache = new ConcurrentHashMap<>();
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@PostConstruct
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public void init() {
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refresh();
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}
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/** Returns true iff the flag is enabled in the given context. */
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public boolean isEnabled(String flagKey, FlagContext ctx) {
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FeatureFlagEntity flag = cache.computeIfAbsent(flagKey, this::loadOne);
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if (flag == MISSING || !Boolean.TRUE.equals(flag.getEnabled())) {
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return false;
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}
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return matchesContext(flag, ctx == null ? FlagContext.empty() : ctx);
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}
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public boolean isEnabled(String flagKey) {
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return isEnabled(flagKey, FlagContext.empty());
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}
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public boolean isEnabledForKb(String flagKey, Long kbId) {
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return isEnabled(flagKey, FlagContext.ofKb(kbId));
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}
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public boolean isEnabledForUser(String flagKey, Long userId) {
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return isEnabled(flagKey, FlagContext.ofUser(userId));
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}
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/** Periodic full refresh; covers DB writes that bypass the admin API. */
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@Scheduled(fixedDelayString = "${mateclaw.feature-flag.refresh-ms:30000}")
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public void refresh() {
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try {
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List<FeatureFlagEntity> all = mapper.selectList(null);
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ConcurrentHashMap<String, FeatureFlagEntity> next = new ConcurrentHashMap<>();
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for (FeatureFlagEntity flag : all) {
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next.put(flag.getFlagKey(), flag);
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}
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cache.clear();
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cache.putAll(next);
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log.debug("[FeatureFlag] refreshed {} flags from DB", next.size());
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} catch (Exception e) {
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log.warn("[FeatureFlag] refresh failed; keeping previous cache: {}", e.getMessage());
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}
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}
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/** Invalidate + reload; called by admin-write paths to make changes visible immediately. */
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public void invalidate() {
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cache.clear();
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refresh();
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}
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// ==================== internal ====================
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private boolean matchesContext(FeatureFlagEntity flag, FlagContext ctx) {
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boolean kbWhitelistDefined = isPresent(flag.getWhitelistKbIds());
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boolean userWhitelistDefined = isPresent(flag.getWhitelistUserIds());
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if (kbWhitelistDefined && ctx.getKbId() != null) {
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Set<Long> kbs = parseIds(flag.getWhitelistKbIds());
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if (!kbs.contains(ctx.getKbId())) {
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return false;
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}
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}
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if (userWhitelistDefined && ctx.getUserId() != null) {
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Set<Long> users = parseIds(flag.getWhitelistUserIds());
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if (!users.contains(ctx.getUserId())) {
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return false;
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}
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}
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// Percentage rollout only consulted when no whitelist applies.
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if (!kbWhitelistDefined && !userWhitelistDefined) {
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Integer pct = flag.getRolloutPercent();
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if (pct != null && pct > 0 && pct < 100) {
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long key = ctx.getKbId() != null
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? ctx.getKbId()
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: ctx.getUserId() != null
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? ctx.getUserId()
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: flag.getFlagKey().hashCode();
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return Math.floorMod(key, 100L) < pct;
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}
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}
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return true;
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}
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private static boolean isPresent(String csv) {
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return csv != null && !csv.isBlank();
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}
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private static Set<Long> parseIds(String csv) {
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return Arrays.stream(csv.split(","))
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.map(String::trim)
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.filter(s -> !s.isEmpty())
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.map(s -> {
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try {
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return Long.parseLong(s);
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} catch (NumberFormatException e) {
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return null;
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}
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})
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.filter(java.util.Objects::nonNull)
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.collect(Collectors.toCollection(HashSet::new));
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}
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private FeatureFlagEntity loadOne(String flagKey) {
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try {
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FeatureFlagEntity flag = mapper.selectOne(
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new LambdaQueryWrapper<FeatureFlagEntity>()
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.eq(FeatureFlagEntity::getFlagKey, flagKey));
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return flag != null ? flag : MISSING;
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} catch (Exception e) {
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log.warn("[FeatureFlag] loadOne({}) failed: {}", flagKey, e.getMessage());
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return MISSING;
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}
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}
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}
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package vip.mate.system.featureflag;
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import lombok.Builder;
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import lombok.Data;
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/**
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* Evaluation context passed to {@link FeatureFlagService#isEnabled}.
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*
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* <p>Either or both of {@code kbId} and {@code userId} may be set. The
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* service uses them to match against per-flag whitelists; if both are null
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* the flag is evaluated against the percentage-rollout dial only.
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*
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* @author MateClaw Team
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*/
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@Data
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@Builder
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public class FlagContext {
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private Long kbId;
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private Long userId;
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private String role;
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public static FlagContext empty() {
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return FlagContext.builder().build();
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}
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public static FlagContext ofKb(Long kbId) {
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return FlagContext.builder().kbId(kbId).build();
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}
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public static FlagContext ofUser(Long userId) {
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return FlagContext.builder().userId(userId).build();
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}
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}
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package vip.mate.system.featureflag.repository;
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import com.baomidou.mybatisplus.core.mapper.BaseMapper;
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import org.apache.ibatis.annotations.Mapper;
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import vip.mate.system.featureflag.FeatureFlagEntity;
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/**
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* MyBatis Plus mapper for {@link FeatureFlagEntity}.
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*
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* <p>Mapper interface lives under a {@code repository} sub-package as required
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* by the application-wide {@code @MapperScan("vip.mate.**.repository")}.
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*
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* @author MateClaw Team
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*/
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@Mapper
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public interface FeatureFlagMapper extends BaseMapper<FeatureFlagEntity> {
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}
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-- mate_feature_flag: runtime-toggleable feature flag store.
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--
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-- Each row defines one named flag with optional KB / user whitelists and
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-- a percentage rollout. Reads go through an in-memory cache that refreshes
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-- on a 30-second timer (and immediately on admin write); the cache is
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-- per-instance so multi-instance deployments converge within one tick.
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CREATE TABLE IF NOT EXISTS mate_feature_flag (
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id BIGINT AUTO_INCREMENT PRIMARY KEY,
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flag_key VARCHAR(128) NOT NULL UNIQUE,
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-- Master switch. When false, isEnabled() returns false regardless of whitelists.
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enabled BOOLEAN NOT NULL DEFAULT FALSE,
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-- Free-form note shown in the admin UI; not consumed by code paths.
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description VARCHAR(512),
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-- Comma-separated KB ids; NULL/empty means the flag applies to all KBs.
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whitelist_kb_ids CLOB,
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|
|
||||||
|
-- Comma-separated user ids; NULL/empty means the flag applies to all users.
|
||||||
|
whitelist_user_ids CLOB,
|
||||||
|
|
||||||
|
-- Hash-based gradual rollout (0..100). Only consulted when both whitelists
|
||||||
|
-- are empty; otherwise whitelist matching wins.
|
||||||
|
rollout_percent INT DEFAULT 0,
|
||||||
|
|
||||||
|
create_time TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
|
||||||
|
update_time TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
|
||||||
|
deleted INT NOT NULL DEFAULT 0
|
||||||
|
);
|
||||||
|
|
||||||
|
CREATE INDEX IF NOT EXISTS idx_mff_key_enabled
|
||||||
|
ON mate_feature_flag (flag_key, enabled, deleted);
|
||||||
|
|
||||||
|
-- Seed wiki feature flags with safe defaults.
|
||||||
|
-- New capabilities ship disabled and are turned on via admin API or via
|
||||||
|
-- editing whitelist_kb_ids during gradual rollout.
|
||||||
|
MERGE INTO mate_feature_flag (flag_key, enabled, description) KEY (flag_key) VALUES
|
||||||
|
('wiki.ocr.enabled', FALSE, 'Image OCR / vision-in pipeline for wiki uploads'),
|
||||||
|
('wiki.compile.4stage.enabled', FALSE, 'Four-stage knowledge base compilation pipeline'),
|
||||||
|
('wiki.compile.cache.enabled', FALSE, 'Prompt cache layer for the wiki compile pipeline'),
|
||||||
|
('wiki.confidence.enabled', FALSE, 'Confidence taxonomy on wiki relations and pages'),
|
||||||
|
('wiki.hot_cache.enabled', FALSE, 'KB-level recent-activity snapshot injected into agent system prompt'),
|
||||||
|
('wiki.graph.insights.enabled', FALSE, 'Wiki graph insights panel (surprising connections, gaps, bridges)'),
|
||||||
|
('wiki.graph.adamic_adar.enabled', FALSE, 'Adamic-Adar graph signal (additive to existing four signals)'),
|
||||||
|
('wiki.graph.boundary.enabled', FALSE, 'Boundary score for surfacing dangling pages'),
|
||||||
|
('wiki.relation.cache.enabled', TRUE, 'Persistent cache for wiki page-to-page relation computation');
|
||||||
@ -0,0 +1,38 @@
|
|||||||
|
-- mate_feature_flag: runtime-toggleable feature flag store.
|
||||||
|
--
|
||||||
|
-- Each row defines one named flag with optional KB / user whitelists and
|
||||||
|
-- a percentage rollout. Reads go through an in-memory cache that refreshes
|
||||||
|
-- on a 30-second timer (and immediately on admin write); the cache is
|
||||||
|
-- per-instance so multi-instance deployments converge within one tick.
|
||||||
|
|
||||||
|
CREATE TABLE IF NOT EXISTS mate_feature_flag (
|
||||||
|
id BIGINT AUTO_INCREMENT PRIMARY KEY,
|
||||||
|
flag_key VARCHAR(128) NOT NULL,
|
||||||
|
enabled BOOLEAN NOT NULL DEFAULT FALSE,
|
||||||
|
description VARCHAR(512),
|
||||||
|
whitelist_kb_ids TEXT,
|
||||||
|
whitelist_user_ids TEXT,
|
||||||
|
rollout_percent INT DEFAULT 0,
|
||||||
|
|
||||||
|
create_time DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
|
||||||
|
update_time DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
|
||||||
|
deleted TINYINT NOT NULL DEFAULT 0,
|
||||||
|
|
||||||
|
UNIQUE KEY uk_mff_key (flag_key),
|
||||||
|
KEY idx_mff_key_flag (flag_key, enabled, deleted)
|
||||||
|
) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4 COLLATE = utf8mb4_unicode_ci
|
||||||
|
COMMENT = 'Runtime-toggleable feature flag store with KB/user whitelists and percentage rollout.';
|
||||||
|
|
||||||
|
-- Seed wiki feature flags with safe defaults. ON DUPLICATE KEY UPDATE
|
||||||
|
-- preserves existing operator overrides on re-run.
|
||||||
|
INSERT INTO mate_feature_flag (flag_key, enabled, description) VALUES
|
||||||
|
('wiki.ocr.enabled', FALSE, 'Image OCR / vision-in pipeline for wiki uploads'),
|
||||||
|
('wiki.compile.4stage.enabled', FALSE, 'Four-stage knowledge base compilation pipeline'),
|
||||||
|
('wiki.compile.cache.enabled', FALSE, 'Prompt cache layer for the wiki compile pipeline'),
|
||||||
|
('wiki.confidence.enabled', FALSE, 'Confidence taxonomy on wiki relations and pages'),
|
||||||
|
('wiki.hot_cache.enabled', FALSE, 'KB-level recent-activity snapshot injected into agent system prompt'),
|
||||||
|
('wiki.graph.insights.enabled', FALSE, 'Wiki graph insights panel (surprising connections, gaps, bridges)'),
|
||||||
|
('wiki.graph.adamic_adar.enabled', FALSE, 'Adamic-Adar graph signal (additive to existing four signals)'),
|
||||||
|
('wiki.graph.boundary.enabled', FALSE, 'Boundary score for surfacing dangling pages'),
|
||||||
|
('wiki.relation.cache.enabled', TRUE, 'Persistent cache for wiki page-to-page relation computation')
|
||||||
|
ON DUPLICATE KEY UPDATE description = VALUES(description);
|
||||||
Loading…
Reference in New Issue
Block a user