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hooks.go
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hooks.go
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package callbacks
import (
"bytes"
"encoding/json"
"io"
"log"
"net/http"
"github.com/Datosystem/go_api_core/app"
"github.com/Datosystem/go_api_core/controller"
"github.com/gin-gonic/gin"
"gorm.io/gorm"
)
func logError(hook app.Webhook, prefix string, err error) {
log.Println("Webhook " + hook.TYPE + " " + hook.CONTEXT + ": " + err.Error())
}
func LoadWebhooks(db *gorm.DB) {
var modelWebhooks []app.Webhook
db.Raw(`
IF (EXISTS(SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'dbo' AND TABLE_NAME = 'WEBHOOKS'))
BEGIN
SELECT * FROM WEBHOOKS WHERE TYPE IN ('AfterUpdate')
END
`).Scan(&modelWebhooks)
for _, hook := range modelWebhooks {
app.AddModelHook(hook.CONTEXT, hook.TYPE, func(db *gorm.DB) {
c := db.Statement.Context.Value("gin").(*gin.Context)
model := db.Statement.Model
primaries := map[string]any{}
if len(hook.QUERY_ARGS) != 0 {
fields := controller.GetPrimaryFields(db.Statement.Schema.ModelType)
for _, field := range fields {
primaries[field] = db.Statement.ReflectValue.FieldByName(field).Interface()
}
}
go func(hook app.Webhook) {
controller.Recover(c)
body := model
if len(hook.QUERY_ARGS) != 0 {
args := controller.QueryMapArgs{
Primaries: primaries,
}
json.Unmarshal([]byte(hook.QUERY_ARGS), &args)
args.Model = model
err := controller.QueryMap(c, app.DB, &args, controller.QueryMapConfig{SkipValidation: true})
if err != nil {
logError(hook, "", err)
}
if args.Count != 1 {
return
}
}
client := &http.Client{}
headers := http.Header{}
headers.Set("Authorization", c.GetHeader("Authorization"))
var reader io.Reader
if hook.METHOD == http.MethodPost || hook.METHOD == http.MethodPatch || hook.METHOD == http.MethodPut {
if hook.BODY != "" {
reader = bytes.NewBufferString(hook.BODY)
} else {
data, err := json.Marshal(body)
if err == nil {
reader = bytes.NewBuffer(data)
}
headers.Set("Content-Type", "application/json")
}
}
req, _ := http.NewRequest(hook.METHOD, hook.URL, reader)
req.Header = headers
res, err := client.Do(req)
if err != nil {
logError(hook, "call "+hook.URL+" error:", err)
return
}
defer res.Body.Close()
}(hook)
})
}
}