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partners_staticdb.go
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/
partners_staticdb.go
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// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package rewards
import (
"context"
"sort"
"strings"
"github.com/zeebo/errs"
)
// PartnersStaticDB implements partner lookup based on a static definition.
//
// architecture: Database Implementation
type PartnersStaticDB struct {
list *PartnerList
byName map[string]PartnerInfo
byID map[string]PartnerInfo
byUserAgent map[string]PartnerInfo
}
var _ PartnersDB = (*PartnersStaticDB)(nil)
// NewPartnersStaticDB creates a new PartnersStaticDB.
func NewPartnersStaticDB(list *PartnerList) (*PartnersStaticDB, error) {
db := &PartnersStaticDB{
list: list,
byName: map[string]PartnerInfo{},
byID: map[string]PartnerInfo{},
byUserAgent: map[string]PartnerInfo{},
}
sort.Slice(list.Partners, func(i, k int) bool {
return list.Partners[i].Name < list.Partners[k].Name
})
var errg errs.Group
for _, p := range list.Partners {
name := strings.ToLower(p.Name)
if _, exists := db.byName[name]; exists {
errg.Add(ErrPartners.New("name %q already exists", p.Name))
} else {
db.byName[name] = p
}
if _, exists := db.byID[p.ID]; exists {
errg.Add(ErrPartners.New("id %q already exists", p.ID))
} else {
db.byID[p.ID] = p
}
useragent := CanonicalUserAgentProduct(p.UserAgent())
if _, exists := db.byUserAgent[useragent]; exists {
errg.Add(ErrPartners.New("user agent %q already exists", useragent))
} else {
db.byUserAgent[useragent] = p
}
}
return db, errg.Err()
}
// All returns all partners.
func (db *PartnersStaticDB) All(ctx context.Context) ([]PartnerInfo, error) {
return append([]PartnerInfo{}, db.list.Partners...), nil
}
// ByName returns partner definitions for a given name. Name is case insensitive.
func (db *PartnersStaticDB) ByName(ctx context.Context, name string) (PartnerInfo, error) {
partner, ok := db.byName[strings.ToLower(name)]
if !ok {
return PartnerInfo{}, ErrPartnerNotExist.New("%q", name)
}
return partner, nil
}
// ByID returns partner definition corresponding to an id.
func (db *PartnersStaticDB) ByID(ctx context.Context, id string) (PartnerInfo, error) {
partner, ok := db.byID[id]
if !ok {
return PartnerInfo{}, ErrPartnerNotExist.New("%q", id)
}
return partner, nil
}
// ByUserAgent returns partner definition corresponding to an user agent product string.
func (db *PartnersStaticDB) ByUserAgent(ctx context.Context, agent string) (PartnerInfo, error) {
partner, ok := db.byUserAgent[CanonicalUserAgentProduct(agent)]
if !ok {
return PartnerInfo{}, ErrPartnerNotExist.New("%q", agent)
}
return partner, nil
}