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Mike Schwörer 2023-06-06 21:18:40 +02:00
parent 1fbae343a4
commit c338d23070
Signed by: Mikescher
GPG Key ID: D3C7172E0A70F8CF
14 changed files with 1076 additions and 9 deletions

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@ -5,4 +5,36 @@ A collection of general & useful library methods
This should not have any heavy dependencies (gin, mongo, etc) and add missing basic language features...
Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
### Packages:
| Name | Maintainer | Description |
|-------------|------------|---------------------------------------------------------------------------------------------------------------|
| langext | Mike | General uttility/helper functions, (everything thats missing from go standard library) |
| mathext | Mike | Utility/Helper functions for math |
| cryptext | Mike | Utility/Helper functions for encryption |
| syncext | Mike | Utility/Helper funtions for multi-threading / mutex / channels |
| dataext | Mike | Various useful data structures |
| zipext | Mike | Utility for zip/gzip/tar etc |
| | | |
| mongoext | Mike | Utility/Helper functions for mongodb |
| cursortoken | Mike | MongoDB cursortoken implementation |
| | | |
| totpext | Mike | Implementation of TOTP (2-Factor-Auth) |
| termext | Mike | Utilities for terminals (mostly color output) |
| confext | Mike | Parses environment configuration into structs |
| cmdext | Mike | Runner for external commands/processes |
| | | |
| sq | Mike | Utility functions for sql based databases |
| tst | Mike | Utility functions for unit tests |
| | | |
| rfctime | Mike | Classes for time seriallization, with different marshallign method for mongo and json |
| gojson | Mike | Same interface for marshalling/unmarshalling as go/json, except with proper serialization of null arrays/maps |
| | | |
| bfcodegen | Mike | Various codegen tools (run via go generate) |
| | | |
| rext | Mike | Regex Wrapper, wraps regexp with a better interface |
| wmo | Mike | Mongo Wrapper, wraps mongodb with a better interface |
| | | |

13
TODO.md Normal file
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@ -0,0 +1,13 @@
- cronext
- cursortoken
- typed/geenric mongo wrapper
- error package
- rfctime.DateOnly
- rfctime.HMSTimeOnly
- rfctime.NanoTimeOnly

8
cursortoken/direction.go Normal file
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@ -0,0 +1,8 @@
package cursortoken
type SortDirection string //@enum:type
const (
SortASC SortDirection = "ASC"
SortDESC SortDirection = "DESC"
)

10
cursortoken/filter.go Normal file
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@ -0,0 +1,10 @@
package cursortoken
import (
"go.mongodb.org/mongo-driver/mongo"
)
type Filter interface {
FilterQuery() mongo.Pipeline
Pagination() (string, SortDirection, *string, *SortDirection)
}

184
cursortoken/token.go Normal file
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@ -0,0 +1,184 @@
package cursortoken
import (
"encoding/base32"
"encoding/json"
"errors"
"go.mongodb.org/mongo-driver/bson/primitive"
"strings"
"time"
)
type Mode string
const (
CTMStart Mode = "START"
CTMNormal Mode = "NORMAL"
CTMEnd Mode = "END"
)
type Extra struct {
Timestamp *time.Time
Id *string
Page *int
PageSize *int
}
type CursorToken struct {
Mode Mode
ValuePrimary string
ValueSecondary string
Direction SortDirection
DirectionSecondary SortDirection
PageSize int
Extra Extra
}
type cursorTokenSerialize struct {
ValuePrimary *string `json:"v1,omitempty"`
ValueSecondary *string `json:"v2,omitempty"`
Direction *SortDirection `json:"dir,omitempty"`
DirectionSecondary *SortDirection `json:"dir2,omitempty"`
PageSize *int `json:"size,omitempty"`
ExtraTimestamp *time.Time `json:"ts,omitempty"`
ExtraId *string `json:"id,omitempty"`
ExtraPage *int `json:"pg,omitempty"`
ExtraPageSize *int `json:"sz,omitempty"`
}
func Start() CursorToken {
return CursorToken{
Mode: CTMStart,
ValuePrimary: "",
ValueSecondary: "",
Direction: "",
DirectionSecondary: "",
PageSize: 0,
Extra: Extra{},
}
}
func End() CursorToken {
return CursorToken{
Mode: CTMEnd,
ValuePrimary: "",
ValueSecondary: "",
Direction: "",
DirectionSecondary: "",
PageSize: 0,
Extra: Extra{},
}
}
func (c *CursorToken) Token() string {
if c.Mode == CTMStart {
return "@start"
}
if c.Mode == CTMEnd {
return "@end"
}
// We kinda manually implement omitempty for the CursorToken here
// because omitempty does not work for time.Time and otherwise we would always
// get weird time values when decoding a token that initially didn't have an Timestamp set
// For this usecase we treat Unix=0 as an empty timestamp
sertok := cursorTokenSerialize{}
if c.ValuePrimary != "" {
sertok.ValuePrimary = &c.ValuePrimary
}
if c.ValueSecondary != "" {
sertok.ValueSecondary = &c.ValueSecondary
}
if c.Direction != "" {
sertok.Direction = &c.Direction
}
if c.DirectionSecondary != "" {
sertok.DirectionSecondary = &c.DirectionSecondary
}
if c.PageSize != 0 {
sertok.PageSize = &c.PageSize
}
sertok.ExtraTimestamp = c.Extra.Timestamp
sertok.ExtraId = c.Extra.Id
sertok.ExtraPage = c.Extra.Page
sertok.ExtraPageSize = c.Extra.PageSize
body, err := json.Marshal(sertok)
if err != nil {
panic(err)
}
return "tok_" + base32.StdEncoding.EncodeToString(body)
}
func Decode(tok string) (CursorToken, error) {
if tok == "" {
return Start(), nil
}
if strings.ToLower(tok) == "@start" {
return Start(), nil
}
if strings.ToLower(tok) == "@end" {
return End(), nil
}
if !strings.HasPrefix(tok, "tok_") {
return CursorToken{}, errors.New("could not decode token, missing prefix")
}
body, err := base32.StdEncoding.DecodeString(tok[len("tok_"):])
if err != nil {
return CursorToken{}, err
}
var tokenDeserialize cursorTokenSerialize
err = json.Unmarshal(body, &tokenDeserialize)
if err != nil {
return CursorToken{}, err
}
token := CursorToken{Mode: CTMNormal}
if tokenDeserialize.ValuePrimary != nil {
token.ValuePrimary = *tokenDeserialize.ValuePrimary
}
if tokenDeserialize.ValueSecondary != nil {
token.ValueSecondary = *tokenDeserialize.ValueSecondary
}
if tokenDeserialize.Direction != nil {
token.Direction = *tokenDeserialize.Direction
}
if tokenDeserialize.DirectionSecondary != nil {
token.DirectionSecondary = *tokenDeserialize.DirectionSecondary
}
if tokenDeserialize.PageSize != nil {
token.PageSize = *tokenDeserialize.PageSize
}
token.Extra.Timestamp = tokenDeserialize.ExtraTimestamp
token.Extra.Id = tokenDeserialize.ExtraId
token.Extra.Page = tokenDeserialize.ExtraPage
token.Extra.PageSize = tokenDeserialize.ExtraPageSize
return token, nil
}
func (c *CursorToken) ValuePrimaryObjectId() (primitive.ObjectID, bool) {
if oid, err := primitive.ObjectIDFromHex(c.ValuePrimary); err == nil {
return oid, true
} else {
return primitive.ObjectID{}, false
}
}
func (c *CursorToken) ValueSecondaryObjectId() (primitive.ObjectID, bool) {
if oid, err := primitive.ObjectIDFromHex(c.ValueSecondary); err == nil {
return oid, true
} else {
return primitive.ObjectID{}, false
}
}

16
go.mod
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@ -3,12 +3,22 @@ module gogs.mikescher.com/BlackForestBytes/goext
go 1.19
require (
github.com/jmoiron/sqlx v1.3.5
go.mongodb.org/mongo-driver v1.11.1
golang.org/x/crypto v0.4.0
golang.org/x/sys v0.3.0
golang.org/x/term v0.3.0
)
require (
github.com/jmoiron/sqlx v1.3.5 // indirect
go.mongodb.org/mongo-driver v1.11.1 // indirect
golang.org/x/crypto v0.4.0 // indirect
github.com/golang/snappy v0.0.1 // indirect
github.com/klauspost/compress v1.13.6 // indirect
github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/xdg-go/pbkdf2 v1.0.0 // indirect
github.com/xdg-go/scram v1.1.1 // indirect
github.com/xdg-go/stringprep v1.0.3 // indirect
github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
golang.org/x/text v0.5.0 // indirect
)

27
go.sum
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@ -1,25 +1,43 @@
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=
github.com/klauspost/compress v1.13.6 h1:P76CopJELS0TiO2mebmnzgWaajssP/EszplttgQxcgc=
github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/lib/pq v1.2.0 h1:LXpIM/LZ5xGFhOpXAQUIMM1HdyqzVYM13zNdjCEEcA0=
github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
github.com/mattn/go-sqlite3 v1.14.6 h1:dNPt6NO46WmLVt2DLNpwczCmdV5boIZ6g/tlDrlRUbg=
github.com/mattn/go-sqlite3 v1.14.6/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe h1:iruDEfMl2E6fbMZ9s0scYfZQ84/6SPL6zC8ACM2oIL0=
github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
github.com/xdg-go/scram v1.1.1 h1:VOMT+81stJgXW3CpHyqHN3AXDYIMsx56mEFrB37Mb/E=
github.com/xdg-go/scram v1.1.1/go.mod h1:RaEWvsqvNKKvBPvcKeFjrG2cJqOkHTiyTpzz23ni57g=
github.com/xdg-go/stringprep v1.0.3 h1:kdwGpVNwPFtjs98xCGkHjQtGKh86rDcRZN17QEMCOIs=
github.com/xdg-go/stringprep v1.0.3/go.mod h1:W3f5j4i+9rC0kuIEJL0ky1VpHXQU3ocBgklLGvcBnW8=
github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d h1:splanxYIlg+5LfHAM6xpdFEAYOk8iySO56hMFq6uLyA=
github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d/go.mod h1:rHwXgn7JulP+udvsHwJoVG1YGAP6VLg4y9I5dyZdqmA=
go.mongodb.org/mongo-driver v1.11.1 h1:QP0znIRTuL0jf1oBQoAoM0C6ZJfBK4kx0Uumtv1A7w8=
go.mongodb.org/mongo-driver v1.11.1/go.mod h1:s7p5vEtfbeR1gYi6pnj3c3/urpbLv2T5Sfd6Rp2HBB8=
@ -27,24 +45,25 @@ golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0
golang.org/x/crypto v0.4.0 h1:UVQgzMY87xqpKNgb+kDsll2Igd33HszWHFLmpaRMq/8=
golang.org/x/crypto v0.4.0/go.mod h1:3quD/ATkf6oY+rnes5c3ExXTbLc8mueNue5/DoinL80=
golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.3.0 h1:w8ZOecv6NaNa/zC8944JTU3vz4u6Lagfk4RPQxv92NQ=
golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.1.0 h1:g6Z6vPFA9dYBAF7DWcH6sCcOntplXsDKcliusYijMlw=
golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.3.0 h1:qoo4akIqOcDME5bhc/NgxUdovd6BSS2uMsVjB56q1xI=
golang.org/x/term v0.3.0/go.mod h1:q750SLmJuPmVoN1blW3UFBPREJfb1KmY3vwxfr+nFDA=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.5.0 h1:OLmvp0KP+FVG99Ct/qFiL/Fhk4zp4QQnZ7b2U+5piUM=
golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

View File

@ -4,7 +4,7 @@ import (
"reflect"
)
var reflectBasicTypes = []reflect.Type{
var reflectBasicTypes = map[reflect.Kind]reflect.Type{
reflect.Bool: reflect.TypeOf(false),
reflect.Int: reflect.TypeOf(int(0)),
reflect.Int8: reflect.TypeOf(int8(0)),
@ -109,3 +109,28 @@ func TryCast[T any](v any) (T, bool) {
return r4, true
}
func TryCastType(v any, dest reflect.Type) (any, bool) {
underlying := Underlying(reflect.TypeOf(v))
if underlying != Underlying(dest) {
return nil, false
}
r1 := reflect.ValueOf(v)
if !r1.CanConvert(underlying) {
return nil, false
}
r2 := r1.Convert(underlying)
if !r2.CanConvert(dest) {
return nil, false
}
r4 := r2.Convert(dest)
return r4.Interface(), true
}

View File

@ -1,6 +1,7 @@
package rfctime
import (
"gogs.mikescher.com/BlackForestBytes/goext/tst"
"testing"
"time"
)

11
wmo/mongo.go Normal file
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@ -0,0 +1,11 @@
package wmo
import "go.mongodb.org/mongo-driver/mongo"
func W[TData any](collection *mongo.Collection) *Coll[TData] {
c := Coll[TData]{coll: collection}
c.init()
return &c
}

69
wmo/pagination.go Normal file
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@ -0,0 +1,69 @@
package wmo
import (
"go.mongodb.org/mongo-driver/bson"
ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
)
func CreatePagination[TData any](coll *Coll[TData], token ct.CursorToken, fieldPrimary string, sortPrimary ct.SortDirection, fieldSecondary *string, sortSecondary *ct.SortDirection, pageSize *int) ([]bson.D, error) {
cond := bson.A{}
sort := bson.D{}
valuePrimary, err := coll.getTokenValueAsMongoType(token.ValuePrimary, fieldPrimary)
if err != nil {
return nil, err
}
if sortPrimary == ct.SortASC {
// We sort ASC on <field> - so we want all entries newer ($gt) than the $primary
cond = append(cond, bson.M{fieldPrimary: bson.M{"$gt": valuePrimary}})
sort = append(sort, bson.E{Key: fieldPrimary, Value: +1})
} else if sortPrimary == ct.SortDESC {
// We sort DESC on <field> - so we want all entries older ($lt) than the $primary
cond = append(cond, bson.M{fieldPrimary: bson.M{"$lt": valuePrimary}})
sort = append(sort, bson.E{Key: fieldPrimary, Value: -1})
}
if fieldSecondary != nil && sortSecondary != nil && *fieldSecondary != fieldPrimary {
valueSecondary, err := coll.getTokenValueAsMongoType(token.ValueSecondary, *fieldSecondary)
if err != nil {
return nil, err
}
if *sortSecondary == ct.SortASC {
// the conflict-resolution condition, for entries with the _same_ <field> as the $primary we take the ones with a greater $secondary (= newer)
cond = append(cond, bson.M{"$and": bson.A{
bson.M{fieldPrimary: valuePrimary},
bson.M{*fieldSecondary: bson.M{"$gt": valueSecondary}},
}})
sort = append(sort, bson.E{Key: fieldPrimary, Value: +1})
} else if *sortSecondary == ct.SortDESC {
// the conflict-resolution condition, for entries with the _same_ <field> as the $primary we take the ones with a smaller $secondary (= older)
cond = append(cond, bson.M{"$and": bson.A{
bson.M{fieldPrimary: valuePrimary},
bson.M{*fieldSecondary: bson.M{"$lt": valueSecondary}},
}})
sort = append(sort, bson.E{Key: fieldPrimary, Value: -1})
}
}
pipeline := make([]bson.D, 0, 3)
pipeline = append(pipeline, bson.D{{Key: "$match", Value: bson.M{"$or": cond}}})
pipeline = append(pipeline, bson.D{{Key: "$sort", Value: sort}})
if pageSize != nil {
pipeline = append(pipeline, bson.D{{Key: "$limit", Value: int64(*pageSize + 1)}})
}
return pipeline, nil
}

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package wmo
import (
"errors"
"fmt"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
"reflect"
"strconv"
"time"
)
func (c *Coll[TData]) init() {
c.dataTypeMap = make(map[string]fullTypeRef[TData])
example := *new(TData)
v := reflect.ValueOf(example)
c.initFields("", v, make([]int, 0))
}
func (c *Coll[TData]) initFields(prefix string, rval reflect.Value, idxarr []int) {
rtyp := rval.Type()
for i := 0; i < rtyp.NumField(); i++ {
rsfield := rtyp.Field(i)
rvfield := rval.Field(i)
if !rsfield.IsExported() {
continue
}
bsonkey, found := rsfield.Tag.Lookup("bson")
if !found || bsonkey == "-" {
continue
}
fullKey := prefix + bsonkey
newIdxArr := langext.ArrCopy(idxarr)
newIdxArr = append(newIdxArr, i)
if rvfield.Type().Kind() == reflect.Pointer {
c.dataTypeMap[fullKey] = fullTypeRef[TData]{
IsPointer: true,
Kind: rvfield.Type().Elem().Kind(),
Type: rvfield.Type().Elem(),
UnderlyingType: langext.Underlying(rvfield.Type().Elem()),
Name: rsfield.Name,
Index: newIdxArr,
}
} else {
c.dataTypeMap[fullKey] = fullTypeRef[TData]{
IsPointer: false,
Kind: rvfield.Type().Kind(),
Type: rvfield.Type(),
UnderlyingType: langext.Underlying(rvfield.Type()),
Name: rsfield.Name,
Index: newIdxArr,
}
}
if rvfield.Kind() == reflect.Struct {
c.initFields(fullKey+".", rvfield, newIdxArr)
}
}
}
func (c *Coll[TData]) getTokenValueAsMongoType(value string, fieldName string) (any, error) {
fref := c.dataTypeMap[fieldName]
if fref.IsPointer && value == "" {
pointertype := reflect.New(fref.Type).Type()
nilvalue := reflect.Zero(pointertype)
outvalue := nilvalue.Interface()
return outvalue, nil
}
pointerize := func(v any) any {
if !fref.IsPointer {
return v
}
rval1 := reflect.ValueOf(v)
rval2 := rval1.Convert(fref.Type)
rval3 := reflect.New(fref.Type)
rval3.Elem().Set(rval2)
return rval3.Interface()
}
if fref.UnderlyingType == reflect.TypeOf("") {
rt, ok := langext.TryCastType(value, fref.Type)
if !ok {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from string to %s", fieldName, fref.Type.String()))
}
return pointerize(rt), nil
}
if fref.UnderlyingType == reflect.TypeOf(time.Time{}) {
t, err := time.Parse(time.RFC3339Nano, value)
if err != nil {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as time.Time ('%s')", fieldName, value))
}
rt, ok := langext.TryCastType(t, fref.Type)
if !ok {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from time.Time to %s", fieldName, fref.Type.String()))
}
return pointerize(rt), nil
}
if fref.UnderlyingType == reflect.TypeOf(int(0)) {
t, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as int64 ('%s')", fieldName, value))
}
rt, ok := langext.TryCastType(int(t), fref.Type)
if !ok {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from int to %s", fieldName, fref.Type.String()))
}
return pointerize(rt), nil
}
if fref.UnderlyingType == reflect.TypeOf(int32(0)) {
t, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as int32 ('%s')", fieldName, value))
}
rt, ok := langext.TryCastType(int32(t), fref.Type)
if !ok {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from int32 to %s", fieldName, fref.Type.String()))
}
return pointerize(rt), nil
}
if fref.UnderlyingType == reflect.TypeOf(int64(0)) {
t, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as int64 ('%s')", fieldName, value))
}
rt, ok := langext.TryCastType(int64(t), fref.Type)
if !ok {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from int64 to %s", fieldName, fref.Type.String()))
}
return pointerize(rt), nil
}
if fref.UnderlyingType == reflect.TypeOf(float32(0)) {
t, err := strconv.ParseFloat(value, 64)
if err != nil {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as float32 ('%s')", fieldName, value))
}
rt, ok := langext.TryCastType(float32(t), fref.Type)
if !ok {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from float32 to %s", fieldName, fref.Type.String()))
}
return pointerize(rt), nil
}
if fref.UnderlyingType == reflect.TypeOf(float64(0)) {
t, err := strconv.ParseFloat(value, 64)
if err != nil {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as float64 ('%s')", fieldName, value))
}
rt, ok := langext.TryCastType(float64(t), fref.Type)
if !ok {
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from float64 to %s", fieldName, fref.Type.String()))
}
return pointerize(rt), nil
}
return nil, errors.New(fmt.Sprintf("failed to parse field '%s' of type %s (%s)", fieldName, fref.Type.String(), fref.UnderlyingType.String()))
}
func (c *Coll[TData]) getFieldValueAsTokenString(entity TData, fieldName string) (string, error) {
fref := c.dataTypeMap[fieldName]
realValue := c.getFieldValue(entity, fieldName)
if langext.IsNil(realValue) {
return "", nil
}
reflValue := reflect.ValueOf(realValue)
if reflValue.Kind() == reflect.Pointer {
reflValue = reflValue.Elem()
realValue = reflValue.Interface()
}
if fref.UnderlyingType == reflect.TypeOf("") {
rt, ok := langext.TryCastType(realValue, reflect.TypeOf(""))
if !ok {
return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to string", fieldName, fref.Type.String()))
}
return rt.(string), nil
}
if fref.UnderlyingType == reflect.TypeOf(time.Time{}) {
rt, ok := langext.TryCastType(realValue, reflect.TypeOf(time.Time{}))
if !ok {
return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to time.Time", fieldName, fref.Type.String()))
}
return rt.(time.Time).Format(time.RFC3339Nano), nil
}
if fref.UnderlyingType == reflect.TypeOf(int(0)) {
rt, ok := langext.TryCastType(realValue, reflect.TypeOf(int(0)))
if !ok {
return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to int", fieldName, fref.Type.String()))
}
return strconv.Itoa(rt.(int)), nil
}
if fref.UnderlyingType == reflect.TypeOf(int32(0)) {
rt, ok := langext.TryCastType(realValue, reflect.TypeOf(int32(0)))
if !ok {
return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to int32", fieldName, fref.Type.String()))
}
return strconv.FormatInt(int64(rt.(int32)), 10), nil
}
if fref.UnderlyingType == reflect.TypeOf(int64(0)) {
rt, ok := langext.TryCastType(realValue, reflect.TypeOf(int64(0)))
if !ok {
return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to int64", fieldName, fref.Type.String()))
}
return strconv.FormatInt(rt.(int64), 10), nil
}
if fref.UnderlyingType == reflect.TypeOf(float32(0)) {
rt, ok := langext.TryCastType(realValue, reflect.TypeOf(float32(0)))
if !ok {
return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to float32", fieldName, fref.Type.String()))
}
return strconv.FormatFloat(float64(rt.(float32)), 'f', -1, 32), nil
}
if fref.UnderlyingType == reflect.TypeOf(float64(0)) {
rt, ok := langext.TryCastType(realValue, reflect.TypeOf(float64(0)))
if !ok {
return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to float64", fieldName, fref.Type.String()))
}
return strconv.FormatFloat(rt.(float64), 'f', -1, 64), nil
}
return "", errors.New(fmt.Sprintf("failed to parse field '%s' of type %s (%s)", fieldName, fref.Type.String(), fref.UnderlyingType.String()))
}
func (c *Coll[TData]) getFieldType(fieldName string) fullTypeRef[TData] {
return c.dataTypeMap[fieldName]
}
func (c *Coll[TData]) getFieldValue(data TData, fieldName string) any {
fref := c.dataTypeMap[fieldName]
rval := reflect.ValueOf(data)
return rval.FieldByIndex(fref.Index).Interface()
}

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package wmo
import (
"go.mongodb.org/mongo-driver/mongo"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
"gogs.mikescher.com/BlackForestBytes/goext/tst"
"testing"
"time"
)
func TestReflectionGetFieldType(t *testing.T) {
type IDType string
type TestData struct {
ID IDType `bson:"_id"`
CDate time.Time `bson:"cdate"`
Sub struct {
A string `bson:"a"`
} `bson:"sub"`
Str string `bson:"str"`
Ptr *int `bson:"ptr"`
}
coll := W[TestData](&mongo.Collection{})
coll.init()
t0 := time.Now()
d := TestData{
ID: "1",
CDate: t0,
Sub: struct {
A string `bson:"a"`
}{
A: "2",
},
Str: "3",
Ptr: langext.Ptr(4),
}
tst.AssertEqual(t, coll.getFieldType("_id").Kind.String(), "string")
tst.AssertEqual(t, coll.getFieldType("_id").Type.String(), "wmo.IDType")
tst.AssertEqual(t, coll.getFieldType("_id").Name, "ID")
tst.AssertEqual(t, coll.getFieldType("_id").IsPointer, false)
tst.AssertEqual(t, coll.getFieldValue(d, "_id").(IDType), "1")
tst.AssertEqual(t, coll.getFieldType("cdate").Kind.String(), "struct")
tst.AssertEqual(t, coll.getFieldType("cdate").Type.String(), "time.Time")
tst.AssertEqual(t, coll.getFieldType("cdate").Name, "CDate")
tst.AssertEqual(t, coll.getFieldType("cdate").IsPointer, false)
tst.AssertEqual(t, coll.getFieldValue(d, "cdate").(time.Time), t0)
tst.AssertEqual(t, coll.getFieldType("sub.a").Kind.String(), "string")
tst.AssertEqual(t, coll.getFieldType("sub.a").Type.String(), "string")
tst.AssertEqual(t, coll.getFieldType("sub.a").Name, "A")
tst.AssertEqual(t, coll.getFieldType("sub.a").IsPointer, false)
tst.AssertEqual(t, coll.getFieldValue(d, "sub.a").(string), "2")
tst.AssertEqual(t, coll.getFieldType("str").Kind.String(), "string")
tst.AssertEqual(t, coll.getFieldType("str").Type.String(), "string")
tst.AssertEqual(t, coll.getFieldType("str").Name, "Str")
tst.AssertEqual(t, coll.getFieldType("str").IsPointer, false)
tst.AssertEqual(t, coll.getFieldValue(d, "str").(string), "3")
tst.AssertEqual(t, coll.getFieldType("ptr").Kind.String(), "int")
tst.AssertEqual(t, coll.getFieldType("ptr").Type.String(), "int")
tst.AssertEqual(t, coll.getFieldType("ptr").Name, "Ptr")
tst.AssertEqual(t, coll.getFieldType("ptr").IsPointer, true)
tst.AssertEqual(t, *coll.getFieldValue(d, "ptr").(*int), 4)
}
func TestReflectionGetTokenValueAsMongoType(t *testing.T) {
type IDType string
type TestData struct {
ID IDType `bson:"_id"`
CDate time.Time `bson:"cdate"`
Sub struct {
A string `bson:"a"`
} `bson:"sub"`
Str string `bson:"str"`
Ptr *int `bson:"ptr"`
Num int `bson:"num"`
}
coll := W[TestData](&mongo.Collection{})
coll.init()
gtvasmt := func(value string, fieldName string) any {
v, err := coll.getTokenValueAsMongoType(value, fieldName)
if err != nil {
t.Errorf("%s", "failed to getTokenValueAsMongoType")
}
return v
}
tst.AssertEqual(t, gtvasmt("hello", "str").(string), "hello")
tst.AssertEqual(t, gtvasmt("4", "num").(int), 4)
tst.AssertEqual(t, gtvasmt("asdf", "_id").(IDType), "asdf")
tst.AssertEqual(t, gtvasmt("", "ptr").(*int), nil)
tst.AssertEqual(t, *(gtvasmt("123", "ptr").(*int)), 123)
}
func TestReflectionGetFieldValueAsTokenString(t *testing.T) {
type IDType string
type TestData struct {
ID IDType `bson:"_id"`
CDate time.Time `bson:"cdate"`
Sub struct {
A string `bson:"a"`
} `bson:"sub"`
Str string `bson:"str"`
Ptr *int `bson:"ptr"`
Num int `bson:"num"`
Ptr2 *int `bson:"ptr2"`
FFF float64 `bson:"fff"`
}
coll := W[TestData](&mongo.Collection{})
coll.init()
t0 := time.Now()
d := TestData{
ID: "1",
CDate: t0,
Sub: struct {
A string `bson:"a"`
}{
A: "2",
},
Str: "3",
Ptr: langext.Ptr(4),
Num: 22,
FFF: 22.5,
Ptr2: nil,
}
gfvats := func(value TestData, fieldName string) string {
v, err := coll.getFieldValueAsTokenString(value, fieldName)
if err != nil {
t.Errorf("%s", "failed to getTokenValueAsMongoType")
}
return v
}
tst.AssertEqual(t, gfvats(d, "str"), "3")
tst.AssertEqual(t, gfvats(d, "num"), "22")
tst.AssertEqual(t, gfvats(d, "_id"), "1")
tst.AssertEqual(t, gfvats(d, "ptr"), "4")
tst.AssertEqual(t, gfvats(d, "ptr2"), "")
tst.AssertEqual(t, gfvats(d, "fff"), "22.5")
}

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package wmo
import (
"context"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
"reflect"
)
type fullTypeRef[TData any] struct {
IsPointer bool
Kind reflect.Kind
Type reflect.Type
UnderlyingType reflect.Type
Name string
Index []int
}
type Coll[TData any] struct {
coll *mongo.Collection
dataTypeMap map[string]fullTypeRef[TData]
}
func (c *Coll[TData]) Collection() *mongo.Collection {
return c.coll
}
func (c *Coll[TData]) Name() string {
return c.coll.Name()
}
func (c *Coll[TData]) Indexes() mongo.IndexView {
return c.coll.Indexes()
}
func (c *Coll[TData]) Drop(ctx context.Context) error {
return c.coll.Drop(ctx)
}
func (c *Coll[TData]) FindOne(ctx context.Context, filter any) (TData, error) {
var res TData
err := c.coll.FindOne(ctx, filter).Decode(&res)
if err != nil {
return *new(TData), err
}
return res, nil
}
func (c *Coll[TData]) FindOneOpt(ctx context.Context, filter any) (*TData, error) {
var res TData
err := c.coll.FindOne(ctx, filter).Decode(&res)
if err == mongo.ErrNoDocuments {
return nil, nil
}
if err != nil {
return nil, err
}
return &res, nil
}
func (c *Coll[TData]) FindOneByID(ctx context.Context, id any) (TData, error) {
var res TData
err := c.coll.FindOne(ctx, bson.M{"_id": id}).Decode(&res)
if err != nil {
return *new(TData), err
}
return res, nil
}
func (c *Coll[TData]) FindOneOptByID(ctx context.Context, id any) (*TData, error) {
var res TData
err := c.coll.FindOne(ctx, bson.M{"_id": id}).Decode(&res)
if err == mongo.ErrNoDocuments {
return nil, nil
}
if err != nil {
return nil, err
}
return &res, nil
}
func (c *Coll[TData]) Find(ctx context.Context, filter any, opts ...*options.FindOptions) ([]TData, error) {
cursor, err := c.coll.Find(ctx, filter, opts...)
if err != nil {
return nil, err
}
res := make([]TData, 0, cursor.RemainingBatchLength())
err = cursor.All(ctx, &res)
if err != nil {
return nil, err
}
return res, nil
}
func (c *Coll[TData]) Aggregate(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) ([]TData, error) {
cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
if err != nil {
return nil, err
}
res := make([]TData, 0, cursor.RemainingBatchLength())
err = cursor.All(ctx, &res)
if err != nil {
return nil, err
}
return res, nil
}
func (c *Coll[TData]) ReplaceOne(ctx context.Context, id any, value TData) error {
_, err := c.coll.UpdateOne(ctx, bson.M{"_id": id}, value)
if err != nil {
return err
}
return nil
}
func (c *Coll[TData]) UpdateOne(ctx context.Context, id any, updateQuery any) error {
_, err := c.coll.UpdateOne(ctx, bson.M{"_id": id}, updateQuery)
if err != nil {
return err
}
return nil
}
func (c *Coll[TData]) UpdateOneAndReturn(ctx context.Context, id any, updateQuery any) (TData, error) {
_, err := c.coll.UpdateOne(ctx, bson.M{"_id": id}, updateQuery)
if err != nil {
return *new(TData), err
}
var res TData
err = c.coll.FindOne(ctx, bson.M{"_id": id}).Decode(&res)
if err != nil {
return *new(TData), err
}
return res, nil
}
func (c *Coll[TData]) DeleteOne(ctx context.Context, id any) error {
_, err := c.coll.DeleteOne(ctx, bson.M{"_id": id})
if err != nil {
return err
}
return nil
}
func (c *Coll[TData]) List(ctx context.Context, filter ct.Filter, pageSize *int, inTok ct.CursorToken) ([]TData, ct.CursorToken, error) {
if inTok.Mode == ct.CTMEnd {
return make([]TData, 0), ct.End(), nil
}
pipeline := filter.FilterQuery()
sortPrimary, sortDirPrimary, sortSecondary, sortDirSecondary := filter.Pagination()
paginationPipeline, err := CreatePagination(c, inTok, sortPrimary, sortDirPrimary, sortSecondary, sortDirSecondary, pageSize)
if err != nil {
return nil, ct.CursorToken{}, err
}
pipeline = append(pipeline, paginationPipeline...)
cursor, err := c.coll.Aggregate(ctx, pipeline)
if err != nil {
return nil, ct.CursorToken{}, err
}
entities := make([]TData, 0, cursor.RemainingBatchLength()+1)
for (pageSize == nil || len(entities) != *pageSize) && cursor.Next(ctx) {
var entry TData
err = cursor.Decode(&entry)
if err != nil {
return nil, ct.CursorToken{}, err
}
entities = append(entities, entry)
}
if pageSize == nil || len(entities) <= *pageSize || !cursor.TryNext(ctx) {
return entities, ct.End(), nil
}
last := entities[len(entities)-1]
nextToken, _ := c.createToken(sortPrimary, sortDirPrimary, sortSecondary, sortDirSecondary, last, pageSize)
return entities, nextToken, nil
}
func (c *Coll[TData]) createToken(fieldPrimary string, dirPrimary ct.SortDirection, fieldSecondary *string, dirSecondary *ct.SortDirection, lastEntity TData, pageSize *int) (ct.CursorToken, error) {
valuePrimary, err := c.getFieldValueAsTokenString(lastEntity, fieldPrimary)
if err != nil {
return ct.CursorToken{}, err
}
valueSeconary := ""
if fieldSecondary != nil && dirSecondary != nil {
valueSeconary, err = c.getFieldValueAsTokenString(lastEntity, *fieldSecondary)
if err != nil {
return ct.CursorToken{}, err
}
}
return ct.CursorToken{
Mode: ct.CTMNormal,
ValuePrimary: valuePrimary,
ValueSecondary: valueSeconary,
Direction: dirPrimary,
PageSize: langext.Coalesce(pageSize, 0),
Extra: ct.Extra{},
}, nil
}