forked from go-kivik/couchdb
/
dbstats.go
129 lines (117 loc) · 3.03 KB
/
dbstats.go
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package couchdb
import (
"bytes"
"context"
"encoding/json"
"net/http"
"github.com/IG-Soft/couchdb/v3/chttp"
"github.com/IG-Soft/kivik/v3/driver"
)
type dbStats struct {
driver.DBStats
Sizes struct {
File int64 `json:"file"`
External int64 `json:"external"`
Active int64 `json:"active"`
} `json:"sizes"`
UpdateSeq json.RawMessage `json:"update_seq"` // nolint: govet
rawBody json.RawMessage
}
func (s *dbStats) UnmarshalJSON(p []byte) error {
type dbStatsClone dbStats
c := dbStatsClone(*s)
if err := json.Unmarshal(p, &c); err != nil {
return err
}
*s = dbStats(c)
s.rawBody = p
return nil
}
func (s *dbStats) driverStats() *driver.DBStats {
stats := &s.DBStats
if s.Sizes.File > 0 {
stats.DiskSize = s.Sizes.File
}
if s.Sizes.External > 0 {
stats.ExternalSize = s.Sizes.External
}
if s.Sizes.Active > 0 {
stats.ActiveSize = s.Sizes.Active
}
stats.UpdateSeq = string(bytes.Trim(s.UpdateSeq, `"`))
stats.RawResponse = s.rawBody
return stats
}
func (d *db) Stats(ctx context.Context) (*driver.DBStats, error) {
result := dbStats{}
if _, err := d.Client.DoJSON(ctx, http.MethodGet, d.dbName, nil, &result); err != nil {
return nil, err
}
return result.driverStats(), nil
}
type dbsInfoRequest struct {
Keys []string `json:"keys"`
}
type dbsInfoResponse struct {
Key string `json:"key"`
DBInfo dbStats `json:"info"`
Error string `json:"error"`
}
func (c *client) DBsStats(ctx context.Context, dbnames []string) ([]*driver.DBStats, error) {
opts := &chttp.Options{
GetBody: chttp.BodyEncoder(dbsInfoRequest{Keys: dbnames}),
Header: http.Header{
chttp.HeaderIdempotencyKey: []string{},
},
}
result := []dbsInfoResponse{}
_, err := c.DoJSON(context.Background(), http.MethodPost, "/_dbs_info", opts, &result)
if err != nil {
return nil, err
}
stats := make([]*driver.DBStats, len(result))
for i := range result {
if result[i].Error == "" {
stats[i] = result[i].DBInfo.driverStats()
}
}
return stats, nil
}
type partitionStats struct {
DBName string `json:"db_name"`
DocCount int64 `json:"doc_count"`
DocDelCount int64 `json:"doc_del_count"`
Partition string `json:"partition"`
Sizes struct {
Active int64 `json:"active"`
External int64 `json:"external"`
}
rawBody json.RawMessage
}
func (s *partitionStats) UnmarshalJSON(p []byte) error {
c := struct {
partitionStats
UnmarshalJSON struct{}
}{}
if err := json.Unmarshal(p, &c); err != nil {
return err
}
*s = c.partitionStats
s.rawBody = p
return nil
}
func (d *db) PartitionStats(ctx context.Context, name string) (*driver.PartitionStats, error) {
result := partitionStats{}
if _, err := d.Client.DoJSON(ctx, http.MethodGet, d.path("_partition/"+name), nil, &result); err != nil {
return nil, err
}
return &driver.PartitionStats{
DBName: result.DBName,
DocCount: result.DocCount,
DeletedDocCount: result.DocDelCount,
Partition: result.Partition,
ActiveSize: result.Sizes.Active,
ExternalSize: result.Sizes.External,
RawResponse: result.rawBody,
}, nil
}