Details
Major - P3 Description
I'm having problems when I try to save a struct with a interface property
package main
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import (
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"context"
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"log"
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"time"
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)
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const MAX_INSERT_TIMEOUT = time.Second * 10
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type Scannable interface {
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GetValue() int
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IsOpen() bool
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}
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type Port struct {
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Value int `bson:"value"`
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Open bool `bson:"open"`
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}
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type MongoDBPort struct {
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Port `bson:",inline"`
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}
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type Scanner struct {
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Value string `bson:"value"`
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Scannables []Scannable `bson:"scannable"`
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Parallelism int `bson:"-"`
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}
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func NewPort(n int) Scannable {
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if n == 27017 {
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return &MongoDBPort{
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Port{
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Value: n,
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},
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}
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}
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return &Port{
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Value: n,
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}
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}
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func (p Port) IsOpen() bool {
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return p.Open
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}
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func (p Port) GetValue() int {
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return p.Value
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}
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func (s *Scanner) Save(ctx context.Context) {
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var err error
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db := Get("issues")
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col := db.Collection("scanners")
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ctxt, cancel := context.WithTimeout(ctx, MAX_INSERT_TIMEOUT)
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defer cancel()
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_, err = col.InsertOne(ctxt, s)
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if err != nil {
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log.Printf("Error on insert. %s", err.Error())
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return
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}
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log.Println("Saved!")
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}
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This is the output when I try to save a Scanner:
Error on insert. no encoder found for main.Scannable |
I found a solution. But, in my opinion, is not the best solution. I used "gopkg.in/mgo.v2/bson" package for marshalling the object and It is working fine. I tried with "go.mongodb.org/mongo-driver/bson" package but the error persist.
o, err := bson.Marshal(s)
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if err != nil {
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log.Printf("Error on marshal. %s", err.Error())
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return
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}
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_, err = col.InsertOne(ctxt, o)
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