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Slightly simplify the queue settings code to help reduce the risk of problems (#12976)
Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: techknowlogick <techknowlogick@gitea.io>
This commit is contained in:
parent
e374bb7e2d
commit
c8f7a6b774
3 changed files with 46 additions and 28 deletions
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@ -9,25 +9,56 @@ import (
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"reflect"
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)
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// Mappable represents an interface that can MapTo another interface
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type Mappable interface {
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MapTo(v interface{}) error
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}
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// toConfig will attempt to convert a given configuration cfg into the provided exemplar type.
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//
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// It will tolerate the cfg being passed as a []byte or string of a json representation of the
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// exemplar or the correct type of the exemplar itself
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func toConfig(exemplar, cfg interface{}) (interface{}, error) {
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// First of all check if we've got the same type as the exemplar - if so it's all fine.
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if reflect.TypeOf(cfg).AssignableTo(reflect.TypeOf(exemplar)) {
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return cfg, nil
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}
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// Now if not - does it provide a MapTo function we can try?
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if mappable, ok := cfg.(Mappable); ok {
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newVal := reflect.New(reflect.TypeOf(exemplar))
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if err := mappable.MapTo(newVal.Interface()); err == nil {
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return newVal.Elem().Interface(), nil
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}
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// MapTo has failed us ... let's try the json route ...
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}
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// OK we've been passed a byte array right?
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configBytes, ok := cfg.([]byte)
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if !ok {
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configStr, ok := cfg.(string)
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if !ok {
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return nil, ErrInvalidConfiguration{cfg: cfg}
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}
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// oh ... it's a string then?
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var configStr string
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configStr, ok = cfg.(string)
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configBytes = []byte(configStr)
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}
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if !ok {
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// hmm ... can we marshal it to json?
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var err error
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configBytes, err = json.Marshal(cfg)
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ok = (err == nil)
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}
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if !ok {
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// no ... we've tried hard enough at this point - throw an error!
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return nil, ErrInvalidConfiguration{cfg: cfg}
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}
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// OK unmarshal the byte array into a new copy of the exemplar
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newVal := reflect.New(reflect.TypeOf(exemplar))
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if err := json.Unmarshal(configBytes, newVal.Interface()); err != nil {
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// If we can't unmarshal it then return an error!
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return nil, ErrInvalidConfiguration{cfg: cfg, err: err}
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}
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return newVal.Elem().Interface(), nil
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@ -27,27 +27,10 @@ func validType(t string) (Type, error) {
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func getQueueSettings(name string) (setting.QueueSettings, []byte) {
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q := setting.GetQueueSettings(name)
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opts := make(map[string]interface{})
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opts["Name"] = name
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opts["QueueLength"] = q.Length
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opts["BatchLength"] = q.BatchLength
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opts["DataDir"] = q.DataDir
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opts["Addresses"] = q.Addresses
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opts["Network"] = q.Network
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opts["Password"] = q.Password
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opts["DBIndex"] = q.DBIndex
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opts["QueueName"] = q.QueueName
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opts["SetName"] = q.SetName
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opts["Workers"] = q.Workers
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opts["MaxWorkers"] = q.MaxWorkers
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opts["BlockTimeout"] = q.BlockTimeout
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opts["BoostTimeout"] = q.BoostTimeout
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opts["BoostWorkers"] = q.BoostWorkers
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opts["ConnectionString"] = q.ConnectionString
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cfg, err := json.Marshal(opts)
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cfg, err := json.Marshal(q)
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if err != nil {
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log.Error("Unable to marshall generic options: %v Error: %v", opts, err)
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log.Error("Unable to marshall generic options: %v Error: %v", q, err)
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log.Error("Unable to create queue for %s", name, err)
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return q, []byte{}
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}
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@ -75,7 +58,7 @@ func CreateQueue(name string, handle HandlerFunc, exemplar interface{}) Queue {
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Timeout: q.Timeout,
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MaxAttempts: q.MaxAttempts,
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Config: cfg,
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QueueLength: q.Length,
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QueueLength: q.QueueLength,
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Name: name,
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}, exemplar)
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}
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@ -114,7 +97,7 @@ func CreateUniqueQueue(name string, handle HandlerFunc, exemplar interface{}) Un
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Timeout: q.Timeout,
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MaxAttempts: q.MaxAttempts,
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Config: cfg,
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QueueLength: q.Length,
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QueueLength: q.QueueLength,
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}, exemplar)
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}
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if err != nil {
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@ -16,8 +16,9 @@ import (
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// QueueSettings represent the settings for a queue from the ini
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type QueueSettings struct {
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Name string
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DataDir string
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Length int
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QueueLength int `ini:"LENGTH"`
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BatchLength int
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ConnectionString string
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Type string
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@ -44,6 +45,8 @@ var Queue = QueueSettings{}
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func GetQueueSettings(name string) QueueSettings {
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q := QueueSettings{}
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sec := Cfg.Section("queue." + name)
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q.Name = name
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// DataDir is not directly inheritable
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q.DataDir = filepath.Join(Queue.DataDir, name)
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// QueueName is not directly inheritable either
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@ -65,8 +68,9 @@ func GetQueueSettings(name string) QueueSettings {
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q.DataDir = filepath.Join(AppDataPath, q.DataDir)
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}
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_, _ = sec.NewKey("DATADIR", q.DataDir)
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// The rest are...
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q.Length = sec.Key("LENGTH").MustInt(Queue.Length)
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q.QueueLength = sec.Key("LENGTH").MustInt(Queue.QueueLength)
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q.BatchLength = sec.Key("BATCH_LENGTH").MustInt(Queue.BatchLength)
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q.ConnectionString = sec.Key("CONN_STR").MustString(Queue.ConnectionString)
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q.Type = sec.Key("TYPE").MustString(Queue.Type)
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@ -91,7 +95,7 @@ func NewQueueService() {
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if !filepath.IsAbs(Queue.DataDir) {
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Queue.DataDir = filepath.Join(AppDataPath, Queue.DataDir)
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}
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Queue.Length = sec.Key("LENGTH").MustInt(20)
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Queue.QueueLength = sec.Key("LENGTH").MustInt(20)
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Queue.BatchLength = sec.Key("BATCH_LENGTH").MustInt(20)
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Queue.ConnectionString = sec.Key("CONN_STR").MustString("")
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Queue.Type = sec.Key("TYPE").MustString("persistable-channel")
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