forked from TIBCOSoftware/flogo-contrib
/
activity.go
166 lines (139 loc) · 3.97 KB
/
activity.go
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package mongodb
import (
"context"
"fmt"
"strings"
"github.com/mongodb/mongo-go-driver/bson"
"github.com/mongodb/mongo-go-driver/mongo"
"github.com/TIBCOSoftware/flogo-lib/core/activity"
"github.com/TIBCOSoftware/flogo-lib/logger"
)
// ActivityLog is the default logger for the Log Activity
var activityLog = logger.GetLogger("activity-flogo-mongodb")
const (
methodGet = "GET"
methodDelete = "DELETE"
methodInsert = "INSERT"
methodReplace = "REPLACE"
methodUpdate = "UPDATE"
ivConnectionURI = "uri"
ivDbName = "dbName"
ivCollection = "collection"
ivMethod = "method"
ivKeyName = "keyName"
ivKeyValue = "keyValue"
ivData = "data"
ovOutput = "output"
ovCount = "count"
)
func init() {
activityLog.SetLogLevel(logger.InfoLevel)
}
/*
Integration with MongoDb
inputs: {uri, dbName, collection, method, [keyName, keyValue, value]}
outputs: {output, count}
*/
type MongoDbActivity struct {
metadata *activity.Metadata
}
// NewActivity creates a new AppActivity
func NewActivity(metadata *activity.Metadata) activity.Activity {
return &MongoDbActivity{metadata: metadata}
}
// Metadata returns the activity's metadata
func (a *MongoDbActivity) Metadata() *activity.Metadata {
return a.metadata
}
// Eval implements api.Activity.Eval - MongoDb integration
func (a *MongoDbActivity) Eval(ctx activity.Context) (done bool, err error) {
//mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database][?options]]
connectionURI, _ := ctx.GetInput(ivConnectionURI).(string)
dbName, _ := ctx.GetInput(ivDbName).(string)
collectionName, _ := ctx.GetInput(ivCollection).(string)
method, _ := ctx.GetInput(ivMethod).(string)
keyName, _ := ctx.GetInput(ivKeyName).(string)
keyValue, _ := ctx.GetInput(ivKeyValue).(string)
value := ctx.GetInput(ivData)
//todo implement shared sessions
// client, err := mongo.NewClient(connectionURI)
/*
The above function was giving below error;
"data not inserted topology is closed"
*/
client, err := mongo.Connect(context.Background(), connectionURI, nil)
defer client.Disconnect(context.Background())
if err != nil {
activityLog.Errorf("Connection error: %v", err)
return false, err
}
db := client.Database(dbName)
coll := db.Collection(collectionName)
switch strings.ToUpper(method) {
case methodGet:
result := coll.FindOne(context.Background(), bson.NewDocument(bson.EC.String(keyName, keyValue)))
val := make(map[string]interface{})
err := result.Decode(val)
if err != nil {
return false, err
}
activityLog.Debugf("Get Results $#v", result)
ctx.SetOutput(ovOutput, val)
case methodDelete:
result, err := coll.DeleteMany(
context.Background(),
bson.NewDocument(
bson.EC.String(keyName, keyValue),
),
)
if err != nil {
return false, err
}
activityLog.Debugf("Delete Results $#v", result)
ctx.SetOutput(ovCount, result.DeletedCount)
case methodInsert:
result, err := coll.InsertOne(
context.Background(),
value,
)
if err != nil {
return false, err
}
activityLog.Debugf("Insert Results $#v", result)
ctx.SetOutput(ovOutput, result.InsertedID)
case methodReplace:
result, err := coll.ReplaceOne(
context.Background(),
bson.NewDocument(
bson.EC.String(keyName, keyValue),
),
value,
)
if err != nil {
return false, err
}
activityLog.Debugf("Replace Results $#v", result)
ctx.SetOutput(ovOutput, result.UpsertedID)
ctx.SetOutput(ovCount, result.ModifiedCount)
case methodUpdate:
result, err := coll.UpdateOne(
context.Background(),
bson.NewDocument(
bson.EC.String(keyName, keyValue),
),
bson.NewDocument(
bson.EC.Interface("$set", value),
),
)
if err != nil {
return false, err
}
activityLog.Debugf("Update Results $#v", result)
ctx.SetOutput(ovOutput, result.UpsertedID)
ctx.SetOutput(ovCount, result.ModifiedCount)
default:
activityLog.Errorf("unsupported method '%s'", method)
return false, fmt.Errorf("unsupported method '%s'", method)
}
return true, nil
}