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v0.0.301 pagination (page+limit) support in wmo
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This commit is contained in:
Mike Schwörer 2023-11-08 18:30:30 +01:00
parent 3a8baaa6d9
commit 62c9a4e734
Signed by: Mikescher
GPG Key ID: D3C7172E0A70F8CF
10 changed files with 137 additions and 9 deletions
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6
.idea/golinter.xml generated Normal file
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@ -0,0 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="GoLinterSettings">
<option name="checkGoLinterExe" value="false" />
</component>
</project>

1
README.md
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@ -23,6 +23,7 @@ Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
| | | |
| mongoext | Mike | Utility/Helper functions for mongodb |
| cursortoken | Mike | MongoDB cursortoken implementation |
| pagination | Mike | Pagination implementation |
| | | |
| totpext | Mike | Implementation of TOTP (2-Factor-Auth) |
| termext | Mike | Utilities for terminals (mostly color output) |

4
cursortoken/filter.go
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@ -4,6 +4,10 @@ import (
"go.mongodb.org/mongo-driver/mongo"
)
type RawFilter interface {
FilterQuery() mongo.Pipeline
}
type Filter interface {
FilterQuery() mongo.Pipeline
Pagination() (string, SortDirection, string, SortDirection)

6
go.mod
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@ -7,10 +7,10 @@ require (
github.com/jmoiron/sqlx v1.3.5
github.com/rs/xid v1.5.0
github.com/rs/zerolog v1.31.0
go.mongodb.org/mongo-driver v1.12.1
go.mongodb.org/mongo-driver v1.13.0
golang.org/x/crypto v0.14.0
golang.org/x/sys v0.14.0
golang.org/x/term v0.13.0
golang.org/x/term v0.14.0
)
require (
@ -26,7 +26,7 @@ require (
github.com/golang/snappy v0.0.4 // indirect
github.com/json-iterator/go v1.1.12 // indirect
github.com/klauspost/compress v1.17.2 // indirect
github.com/klauspost/cpuid/v2 v2.2.5 // indirect
github.com/klauspost/cpuid/v2 v2.2.6 // indirect
github.com/leodido/go-urn v1.2.4 // indirect
github.com/mattn/go-colorable v0.1.13 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect

6
go.sum
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@ -58,6 +58,8 @@ github.com/klauspost/compress v1.17.2/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQs
github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
github.com/klauspost/cpuid/v2 v2.2.5 h1:0E5MSMDEoAulmXNFquVs//DdoomxaoTY1kUhbc/qbZg=
github.com/klauspost/cpuid/v2 v2.2.5/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
github.com/klauspost/cpuid/v2 v2.2.6 h1:ndNyv040zDGIDh8thGkXYjnFtiN02M1PVVF+JE/48xc=
github.com/klauspost/cpuid/v2 v2.2.6/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M=
github.com/leodido/go-urn v1.2.4 h1:XlAE/cm/ms7TE/VMVoduSpNBoyc2dOxHs5MZSwAN63Q=
github.com/leodido/go-urn v1.2.4/go.mod h1:7ZrI8mTSeBSHl/UaRyKQW1qZeMgak41ANeCNaVckg+4=
@ -116,6 +118,8 @@ github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a/go.mod h1:ul22v+Nro/
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
go.mongodb.org/mongo-driver v1.12.1 h1:nLkghSU8fQNaK7oUmDhQFsnrtcoNy7Z6LVFKsEecqgE=
go.mongodb.org/mongo-driver v1.12.1/go.mod h1:/rGBTebI3XYboVmgz+Wv3Bcbl3aD0QF9zl6kDDw18rQ=
go.mongodb.org/mongo-driver v1.13.0 h1:67DgFFjYOCMWdtTEmKFpV3ffWlFnh+CYZ8ZS/tXWUfY=
go.mongodb.org/mongo-driver v1.13.0/go.mod h1:/rGBTebI3XYboVmgz+Wv3Bcbl3aD0QF9zl6kDDw18rQ=
golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
golang.org/x/arch v0.5.0 h1:jpGode6huXQxcskEIpOCvrU+tzo81b6+oFLUYXWtH/Y=
golang.org/x/arch v0.5.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
@ -162,6 +166,8 @@ golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9sn
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.13.0 h1:bb+I9cTfFazGW51MZqBVmZy7+JEJMouUHTUSKVQLBek=
golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=
golang.org/x/term v0.14.0 h1:LGK9IlZ8T9jvdy6cTdfKUCltatMFOehAQo9SRC46UQ8=
golang.org/x/term v0.14.0/go.mod h1:TySc+nGkYR6qt8km8wUhuFRTVSMIX3XPR58y2lC8vww=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=

4
goextVersion.go
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@ -1,5 +1,5 @@
package goext
const GoextVersion = "0.0.300"
const GoextVersion = "0.0.301"
const GoextVersionTimestamp = "2023-11-04T18:55:44+0100"
const GoextVersionTimestamp = "2023-11-08T18:30:30+0100"

11
pagination/filter.go Normal file
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@ -0,0 +1,11 @@
package pagination
import (
"go.mongodb.org/mongo-driver/mongo"
ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
)
type Filter interface {
FilterQuery() mongo.Pipeline
Pagination() (string, ct.SortDirection)
}

16
pagination/pagination.go Normal file
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@ -0,0 +1,16 @@
package pagination
type Pagination struct {
Page int `json:"page"` // page (first page == 1)
Limit int `json:"limit"` // max-page-size
TotalPages int `json:"totalPages"` // total page-count
TotalItems int `json:"totalItems"` // total items-count
CurrentPageCount int `json:"currntPageCount"` // item-count in current page ( == len(data) )
}
func CalcPaginationTotalPages(totalItems int, limit int) int {
if totalItems == 0 {
return 0
}
return 1 + (totalItems-1)/limit
}

8
wmo/queryList.go
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@ -91,11 +91,11 @@ func (c *Coll[TData]) List(ctx context.Context, filter ct.Filter, pageSize *int,
return entities, nextToken, nil
}
type countRes struct {
Count int64 `bson:"c"`
}
func (c *Coll[TData]) Count(ctx context.Context, filter ct.RawFilter) (int64, error) {
type countRes struct {
Count int64 `bson:"c"`
}
func (c *Coll[TData]) Count(ctx context.Context, filter ct.Filter) (int64, error) {
pipeline := filter.FilterQuery()
pipeline = append(pipeline, bson.D{{Key: "$count", Value: "c"}})

84
wmo/queryPaginate.go Normal file
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@ -0,0 +1,84 @@
package wmo
import (
"context"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
"gogs.mikescher.com/BlackForestBytes/goext/exerr"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
pag "gogs.mikescher.com/BlackForestBytes/goext/pagination"
)
func (c *Coll[TData]) Paginate(ctx context.Context, filter pag.Filter, page int, limit *int) ([]TData, pag.Pagination, error) {
type totalCountResult struct {
Count int `bson:"count"`
}
if page < 0 {
page = 1
}
pipelineSort := mongo.Pipeline{}
pipelineFilter := mongo.Pipeline{}
pf1 := "_id"
pd1 := ct.SortASC
if filter != nil {
pipelineFilter = filter.FilterQuery()
pf1, pd1 = filter.Pagination()
}
if pd1 == ct.SortASC {
pipelineSort = append(pipelineSort, bson.D{{Key: "$sort", Value: bson.D{{Key: pf1, Value: +1}}}})
} else if pd1 == ct.SortDESC {
pipelineSort = append(pipelineSort, bson.D{{Key: "$sort", Value: bson.D{{Key: pf1, Value: -1}}}})
}
pipelinePaginate := mongo.Pipeline{}
pipelinePaginate = append(pipelinePaginate, bson.D{{Key: "$skip", Value: page - 1}})
if limit != nil {
pipelinePaginate = append(pipelinePaginate, bson.D{{Key: "$limit", Value: *limit}})
}
pipelineCount := mongo.Pipeline{}
pipelinePaginate = append(pipelinePaginate, bson.D{{Key: "$count", Value: "count"}})
pipelineList := langext.ArrConcat(mongo.Pipeline{}, pipelineFilter, pipelinePaginate)
pipelineTotalCount := langext.ArrConcat(mongo.Pipeline{}, pipelineFilter, pipelineCount)
cursorList, err := c.coll.Aggregate(ctx, pipelineList)
if err != nil {
return nil, pag.Pagination{}, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipelineList).Str("collection", c.Name()).Build()
}
entities, err := c.decodeAll(ctx, cursorList)
if err != nil {
return nil, pag.Pagination{}, exerr.Wrap(err, "failed to all-decode entities").Build()
}
cursorTotalCount, err := c.coll.Aggregate(ctx, pipelineTotalCount)
if err != nil {
return nil, pag.Pagination{}, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipelineTotalCount).Str("collection", c.Name()).Build()
}
var tcRes totalCountResult
if cursorTotalCount.Next(ctx) {
err = cursorTotalCount.Decode(&tcRes)
if err != nil {
return nil, pag.Pagination{}, exerr.Wrap(err, "failed to decode mongo-aggregation $count result").Any("pipeline", pipelineTotalCount).Str("collection", c.Name()).Build()
}
} else {
tcRes.Count = 0 // no entries in DB
}
paginationObj := pag.Pagination{
Page: page,
Limit: langext.Coalesce(limit, tcRes.Count),
TotalPages: pag.CalcPaginationTotalPages(tcRes.Count, langext.Coalesce(limit, tcRes.Count)),
TotalItems: tcRes.Count,
CurrentPageCount: len(entities),
}
return entities, paginationObj, nil
}