57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
package configser
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import (
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"fmt"
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"sync"
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"time"
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"videoweb/app/service/upstream"
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"videoweb/pub/common/log"
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"github.com/gin-gonic/gin"
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)
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const (
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configInfoPath = "/api/app/config/info"
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configInfoCacheTTL = 60 * time.Second
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)
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var (
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configMu sync.Mutex
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configCache *AppConfigVM
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configAt time.Time
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)
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// FetchConfigInfo 拉取 APP 公共配置。
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func FetchConfigInfo(c *gin.Context) (*ConfigInfoResp, error) {
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var env APIEnvelope[ConfigInfoResp]
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if err := upstream.GetPublicJSON(c, configInfoPath, &env); err != nil {
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return nil, err
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}
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if env.Code != 200 {
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return nil, fmt.Errorf("config info code=%d msg=%s", env.Code, env.Msg)
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}
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return &env.Data, nil
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}
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// FetchAppConfigVMOrEmpty 带短缓存；刷新失败时优先返回最近一次成功配置。
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func FetchAppConfigVMOrEmpty(c *gin.Context) AppConfigVM {
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configMu.Lock()
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defer configMu.Unlock()
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if configCache != nil && time.Since(configAt) < configInfoCacheTTL {
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return *configCache
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}
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info, err := FetchConfigInfo(c)
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if err != nil {
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log.Error("fetch app config info failed", log.E(err))
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if configCache != nil {
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return *configCache
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}
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return ApplyTrackerFallback(AppConfigVM{})
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}
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vm := ApplyTrackerFallback(BuildAppConfigVM(info))
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configCache = &vm
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configAt = time.Now()
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return vm
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}
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