harness-drone/router/middleware/cache/repos.go

44 lines
870 B
Go

package cache
import (
"fmt"
"github.com/drone/drone/model"
"github.com/gin-gonic/gin"
)
// Repos is a middleware function that attempts to cache the
// user's list of remote repositories (ie in GitHub) to minimize
// remote calls that might be expensive, slow or rate-limited.
func Repos(c *gin.Context) {
var user, _ = c.Get("user")
if user == nil {
c.Next()
return
}
key := fmt.Sprintf("repos/%s",
user.(*model.User).Login,
)
// if the item already exists in the cache
// we can continue the middleware chain and
// exit afterwards.
v, _ := get(key)
if v != nil {
c.Set("repos", v)
c.Next()
return
}
// otherwise, if the item isn't cached we execute
// the middleware chain and then cache the permissions
// after the request is processed.
c.Next()
repos, ok := c.Get("repos")
if ok {
set(key, repos, 86400) // 24 hours
}
}