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Extract FPD Merge To Separate Package #3533

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merged 4 commits into from
Mar 11, 2024
Merged

Extract FPD Merge To Separate Package #3533

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75d64a0
Extract OpenRTB Merge Functions From FPD
SyntaxNode Feb 22, 2024
9bdfd66
Pure Signatures
SyntaxNode Feb 22, 2024
3e0ad37
Revert Go 1.20 Function
SyntaxNode Feb 22, 2024
723fb23
Simply Resolve Code
SyntaxNode Mar 5, 2024
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170 changes: 27 additions & 143 deletions firstpartydata/first_party_data.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,18 +2,22 @@ package firstpartydata

import (
"encoding/json"
"errors"
"fmt"

"github.com/prebid/openrtb/v20/openrtb2"
jsonpatch "gopkg.in/evanphx/json-patch.v4"

"github.com/prebid/prebid-server/v2/errortypes"
"github.com/prebid/prebid-server/v2/openrtb_ext"
"github.com/prebid/prebid-server/v2/ortb"
"github.com/prebid/prebid-server/v2/util/jsonutil"
"github.com/prebid/prebid-server/v2/ortb/merge"
"github.com/prebid/prebid-server/v2/util/ptrutil"
)

var (
ErrBadFPD = errors.New("invalid first party data ext")
)

const (
siteKey = "site"
appKey = "app"
Expand Down Expand Up @@ -195,42 +199,18 @@ func resolveUser(fpdConfig *openrtb_ext.ORTB2, bidRequestUser *openrtb2.User, gl
newUser.Data = openRtbGlobalFPD[userDataKey]
}
if fpdConfigUser != nil {
if err := mergeUser(newUser, fpdConfigUser); err != nil {
var err error
if newUser, err = merge.User(newUser, fpdConfigUser); err != nil {
if err == merge.ErrBadOverride {
return nil, ErrBadFPD
}
return nil, err
}
}

return newUser, nil
}

func mergeUser(v *openrtb2.User, overrideJSON json.RawMessage) error {
*v = *ortb.CloneUser(v)

// Track EXTs
// It's not necessary to track `ext` fields in array items because the array
// items will be replaced entirely with the override JSON, so no merge is required.
var ext, extGeo extMerger
ext.Track(&v.Ext)
if v.Geo != nil {
extGeo.Track(&v.Geo.Ext)
}

// Merge
if err := jsonutil.Unmarshal(overrideJSON, &v); err != nil {
return err
}

// Merge EXTs
if err := ext.Merge(); err != nil {
return err
}
if err := extGeo.Merge(); err != nil {
return err
}

return nil
}

func resolveSite(fpdConfig *openrtb_ext.ORTB2, bidRequestSite *openrtb2.Site, globalFPD map[string][]byte, openRtbGlobalFPD map[string][]openrtb2.Data, bidderName string) (*openrtb2.Site, error) {
var fpdConfigSite json.RawMessage

Expand Down Expand Up @@ -278,70 +258,22 @@ func resolveSite(fpdConfig *openrtb_ext.ORTB2, bidRequestSite *openrtb2.Site, gl
newSite.Content.Data = openRtbGlobalFPD[siteContentDataKey]
}
if fpdConfigSite != nil {
if err := mergeSite(newSite, fpdConfigSite, bidderName); err != nil {
var err error
if newSite, err = merge.Site(newSite, fpdConfigSite, bidderName); err != nil {
if err == merge.ErrBadOverride {
return nil, ErrBadFPD
}
return nil, err
}
}
return newSite, nil
}

func mergeSite(v *openrtb2.Site, overrideJSON json.RawMessage, bidderName string) error {
*v = *ortb.CloneSite(v)

// Track EXTs
// It's not necessary to track `ext` fields in array items because the array
// items will be replaced entirely with the override JSON, so no merge is required.
var ext, extPublisher, extContent, extContentProducer, extContentNetwork, extContentChannel extMerger
ext.Track(&v.Ext)
if v.Publisher != nil {
extPublisher.Track(&v.Publisher.Ext)
}
if v.Content != nil {
extContent.Track(&v.Content.Ext)
}
if v.Content != nil && v.Content.Producer != nil {
extContentProducer.Track(&v.Content.Producer.Ext)
}
if v.Content != nil && v.Content.Network != nil {
extContentNetwork.Track(&v.Content.Network.Ext)
}
if v.Content != nil && v.Content.Channel != nil {
extContentChannel.Track(&v.Content.Channel.Ext)
}

// Merge
if err := jsonutil.Unmarshal(overrideJSON, &v); err != nil {
return err
}

// Merge EXTs
if err := ext.Merge(); err != nil {
return err
}
if err := extPublisher.Merge(); err != nil {
return err
}
if err := extContent.Merge(); err != nil {
return err
}
if err := extContentProducer.Merge(); err != nil {
return err
}
if err := extContentNetwork.Merge(); err != nil {
return err
}
if err := extContentChannel.Merge(); err != nil {
return err
}

// Re-Validate Site
if v.ID == "" && v.Page == "" {
return &errortypes.BadInput{
Message: fmt.Sprintf("incorrect First Party Data for bidder %s: Site object cannot set empty page if req.site.id is empty", bidderName),
// Re-Validate Site
if newSite.ID == "" && newSite.Page == "" {
return nil, &errortypes.BadInput{
Message: fmt.Sprintf("incorrect First Party Data for bidder %s: Site object cannot set empty page if req.site.id is empty", bidderName),
}
}
}

return nil
return newSite, nil
}

func resolveApp(fpdConfig *openrtb_ext.ORTB2, bidRequestApp *openrtb2.App, globalFPD map[string][]byte, openRtbGlobalFPD map[string][]openrtb2.Data, bidderName string) (*openrtb2.App, error) {
Expand Down Expand Up @@ -394,66 +326,18 @@ func resolveApp(fpdConfig *openrtb_ext.ORTB2, bidRequestApp *openrtb2.App, globa
}

if fpdConfigApp != nil {
if err := mergeApp(newApp, fpdConfigApp); err != nil {
var err error
if newApp, err = merge.App(newApp, fpdConfigApp); err != nil {
if err == merge.ErrBadOverride {
return nil, ErrBadFPD
}
return nil, err
}
}

return newApp, nil
}

func mergeApp(v *openrtb2.App, overrideJSON json.RawMessage) error {
*v = *ortb.CloneApp(v)

// Track EXTs
// It's not necessary to track `ext` fields in array items because the array
// items will be replaced entirely with the override JSON, so no merge is required.
var ext, extPublisher, extContent, extContentProducer, extContentNetwork, extContentChannel extMerger
ext.Track(&v.Ext)
if v.Publisher != nil {
extPublisher.Track(&v.Publisher.Ext)
}
if v.Content != nil {
extContent.Track(&v.Content.Ext)
}
if v.Content != nil && v.Content.Producer != nil {
extContentProducer.Track(&v.Content.Producer.Ext)
}
if v.Content != nil && v.Content.Network != nil {
extContentNetwork.Track(&v.Content.Network.Ext)
}
if v.Content != nil && v.Content.Channel != nil {
extContentChannel.Track(&v.Content.Channel.Ext)
}

// Merge
if err := jsonutil.Unmarshal(overrideJSON, &v); err != nil {
return err
}

// Merge EXTs
if err := ext.Merge(); err != nil {
return err
}
if err := extPublisher.Merge(); err != nil {
return err
}
if err := extContent.Merge(); err != nil {
return err
}
if err := extContentProducer.Merge(); err != nil {
return err
}
if err := extContentNetwork.Merge(); err != nil {
return err
}
if err := extContentChannel.Merge(); err != nil {
return err
}

return nil
}

func buildExtData(data []byte) []byte {
res := make([]byte, 0, len(data)+len(`"{"data":}"`))
res = append(res, []byte(`{"data":`)...)
Expand Down
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