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element-set.go
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element-set.go
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package wsHandler
import (
"context"
"errors"
"github.com/pixlise/core/v4/api/dbCollections"
"github.com/pixlise/core/v4/api/ws/wsHelpers"
"github.com/pixlise/core/v4/core/errorwithstatus"
"github.com/pixlise/core/v4/core/utils"
protos "github.com/pixlise/core/v4/generated-protos"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/mongo/readconcern"
"go.mongodb.org/mongo-driver/mongo/writeconcern"
)
func HandleElementSetDeleteReq(req *protos.ElementSetDeleteReq, hctx wsHelpers.HandlerContext) (*protos.ElementSetDeleteResp, error) {
return wsHelpers.DeleteUserObject[protos.ElementSetDeleteResp](req.Id, protos.ObjectType_OT_ELEMENT_SET, dbCollections.ElementSetsName, hctx)
}
func HandleElementSetGetReq(req *protos.ElementSetGetReq, hctx wsHelpers.HandlerContext) (*protos.ElementSetGetResp, error) {
dbItem, owner, err := wsHelpers.GetUserObjectById[protos.ElementSet](false, req.Id, protos.ObjectType_OT_ELEMENT_SET, dbCollections.ElementSetsName, hctx)
if err != nil {
return nil, err
}
dbItem.Owner = wsHelpers.MakeOwnerSummary(owner, hctx.SessUser, hctx.Svcs.MongoDB, hctx.Svcs.TimeStamper)
return &protos.ElementSetGetResp{
ElementSet: dbItem,
}, nil
}
func HandleElementSetListReq(req *protos.ElementSetListReq, hctx wsHelpers.HandlerContext) (*protos.ElementSetListResp, error) {
idToOwner, err := wsHelpers.ListAccessibleIDs(false, protos.ObjectType_OT_ELEMENT_SET, hctx.Svcs, hctx.SessUser)
if err != nil {
return nil, err
}
ids := utils.GetMapKeys(idToOwner)
filter := bson.M{"_id": bson.M{"$in": ids}}
opts := options.Find()
cursor, err := hctx.Svcs.MongoDB.Collection(dbCollections.ElementSetsName).Find(context.TODO(), filter, opts)
if err != nil {
return nil, err
}
items := []*protos.ElementSet{}
err = cursor.All(context.TODO(), &items)
if err != nil {
return nil, err
}
// Transform to map of output values
itemMap := map[string]*protos.ElementSetSummary{}
for _, item := range items {
z := []int32{}
for _, l := range item.Lines {
z = append(z, l.Z)
}
summary := &protos.ElementSetSummary{
Id: item.Id,
Name: item.Name,
AtomicNumbers: z,
ModifiedUnixSec: item.ModifiedUnixSec,
}
if owner, ok := idToOwner[item.Id]; ok {
summary.Owner = wsHelpers.MakeOwnerSummary(owner, hctx.SessUser, hctx.Svcs.MongoDB, hctx.Svcs.TimeStamper)
}
itemMap[item.Id] = summary
}
return &protos.ElementSetListResp{
ElementSets: itemMap,
}, nil
}
func validateElementSet(elementSet *protos.ElementSet) error {
if err := wsHelpers.CheckStringField(&elementSet.Name, "Name", 1, 50); err != nil {
return err
}
return wsHelpers.CheckFieldLength(elementSet.Lines, "Lines", 1, 118 /*Max Z*/)
}
func createElementSet(elementSet *protos.ElementSet, hctx wsHelpers.HandlerContext) (*protos.ElementSet, error) {
ctx := context.TODO()
// It's a new item, check these fields...
err := validateElementSet(elementSet)
if err != nil {
return nil, errorwithstatus.MakeBadRequestError(err)
}
// Generate a new id
id := hctx.Svcs.IDGen.GenObjectID()
elementSet.Id = id
// We need to create an ownership item along with it
ownerItem := wsHelpers.MakeOwnerForWrite(id, protos.ObjectType_OT_ELEMENT_SET, hctx.SessUser.User.Id, hctx.Svcs.TimeStamper.GetTimeNowSec())
elementSet.ModifiedUnixSec = ownerItem.CreatedUnixSec
wc := writeconcern.New(writeconcern.WMajority())
rc := readconcern.Snapshot()
txnOpts := options.Transaction().SetWriteConcern(wc).SetReadConcern(rc)
sess, err := hctx.Svcs.MongoDB.Client().StartSession()
if err != nil {
return nil, err
}
defer sess.EndSession(ctx)
// Write the 2 items in a single transaction
callback := func(sessCtx mongo.SessionContext) (interface{}, error) {
_, _err := hctx.Svcs.MongoDB.Collection(dbCollections.ElementSetsName).InsertOne(sessCtx, elementSet)
if _err != nil {
return nil, _err
}
_, _err = hctx.Svcs.MongoDB.Collection(dbCollections.OwnershipName).InsertOne(sessCtx, ownerItem)
if _err != nil {
return nil, _err
}
return nil, nil
}
_, err = sess.WithTransaction(ctx, callback, txnOpts)
if err != nil {
return nil, err
}
elementSet.Owner = wsHelpers.MakeOwnerSummary(ownerItem, hctx.SessUser, hctx.Svcs.MongoDB, hctx.Svcs.TimeStamper)
return elementSet, nil
}
func updateElementSet(elementSet *protos.ElementSet, hctx wsHelpers.HandlerContext) (*protos.ElementSet, error) {
ctx := context.TODO()
dbItem, owner, err := wsHelpers.GetUserObjectById[protos.ElementSet](true, elementSet.Id, protos.ObjectType_OT_ELEMENT_SET, dbCollections.ElementSetsName, hctx)
if err != nil {
return nil, err
}
// Update fields
update := bson.D{}
if len(elementSet.Name) > 0 {
dbItem.Name = elementSet.Name
update = append(update, bson.E{Key: "name", Value: elementSet.Name})
}
if len(elementSet.Lines) > 0 {
dbItem.Lines = elementSet.Lines
update = append(update, bson.E{Key: "lines", Value: elementSet.Lines})
}
// Validate it
err = validateElementSet(dbItem)
if err != nil {
return nil, errorwithstatus.MakeBadRequestError(err)
}
// Update modified time
dbItem.ModifiedUnixSec = uint32(hctx.Svcs.TimeStamper.GetTimeNowSec())
update = append(update, bson.E{Key: "modifiedunixsec", Value: dbItem.ModifiedUnixSec})
// It's valid, update the DB
result, err := hctx.Svcs.MongoDB.Collection(dbCollections.ElementSetsName).UpdateByID(ctx, elementSet.Id, bson.D{{Key: "$set", Value: update}})
if err != nil {
return nil, err
}
if result.MatchedCount != 1 {
hctx.Svcs.Log.Errorf("Element Set UpdateByID result had unexpected counts %+v id: %v", result, elementSet.Id)
}
// Return the merged item we validated, which in theory is in the DB now
dbItem.Owner = wsHelpers.MakeOwnerSummary(owner, hctx.SessUser, hctx.Svcs.MongoDB, hctx.Svcs.TimeStamper)
return dbItem, nil
}
func HandleElementSetWriteReq(req *protos.ElementSetWriteReq, hctx wsHelpers.HandlerContext) (*protos.ElementSetWriteResp, error) {
// Owner should never be accepted from API
if req.ElementSet.Owner != nil {
return nil, errorwithstatus.MakeBadRequestError(errors.New("Owner must be empty for write messages"))
}
var item *protos.ElementSet
var err error
if len(req.ElementSet.Id) <= 0 {
item, err = createElementSet(req.ElementSet, hctx)
} else {
item, err = updateElementSet(req.ElementSet, hctx)
}
if err != nil {
return nil, err
}
return &protos.ElementSetWriteResp{
ElementSet: item,
}, nil
}