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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| package pactasrv | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "github.com/RMI/pacta/oapierr" | ||
| "github.com/RMI/pacta/pacta" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
|
||
| func (s *Server) populatePortfoliosInPortfolioGroups( | ||
| ctx context.Context, | ||
| ts []*pacta.PortfolioGroup, | ||
| ) error { | ||
| getFn := func(pg *pacta.PortfolioGroup) ([]*pacta.Portfolio, error) { | ||
| result := []*pacta.Portfolio{} | ||
| for _, member := range pg.Members { | ||
| result = append(result, member.Portfolio) | ||
| } | ||
| return result, nil | ||
| } | ||
| lookupFn := func(ids []pacta.PortfolioID) (map[pacta.PortfolioID]*pacta.Portfolio, error) { | ||
| return s.DB.Portfolios(s.DB.NoTxn(ctx), ids) | ||
| } | ||
| getIDFn := func(p *pacta.Portfolio) pacta.PortfolioID { | ||
| return p.ID | ||
| } | ||
| if err := populateAll(ts, getFn, getIDFn, lookupFn); err != nil { | ||
| return oapierr.Internal("populating portfolios in portfolio groups failed", zap.Error(err)) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (s *Server) populatePortfolioGroupsInPortfolios( | ||
| ctx context.Context, | ||
| ts []*pacta.Portfolio, | ||
| ) error { | ||
| getFn := func(pg *pacta.Portfolio) ([]*pacta.PortfolioGroup, error) { | ||
| result := []*pacta.PortfolioGroup{} | ||
| for _, member := range pg.MemberOf { | ||
| result = append(result, member.PortfolioGroup) | ||
| } | ||
| return result, nil | ||
| } | ||
| lookupFn := func(ids []pacta.PortfolioGroupID) (map[pacta.PortfolioGroupID]*pacta.PortfolioGroup, error) { | ||
| return s.DB.PortfolioGroups(s.DB.NoTxn(ctx), ids) | ||
| } | ||
| getIDFn := func(p *pacta.PortfolioGroup) pacta.PortfolioGroupID { | ||
| return p.ID | ||
| } | ||
| if err := populateAll(ts, getFn, getIDFn, lookupFn); err != nil { | ||
| return oapierr.Internal("populating portfolio groups in portfolios failed", zap.Error(err)) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // This helper function populates the given targets in the given sources, | ||
| // to allow for generic population of nested data structures. | ||
| // sources = entities that you want to populate sub-entity references in. | ||
| // the sub-entities should be pointers to structs with an ID populated. | ||
| // getTargetsFn = function that takes a source and returns zero or more sub-entities to populate. | ||
| // getTargetIDFn = function that takes a sub-entity and returns its ID. | ||
| // lookupTargetsFn = function that takes a list of sub-entity IDs and returns a map of ID -> sub-entity. | ||
| func populateAll[Source any, TargetID ~string, Target any]( | ||
| sources []*Source, | ||
| getTargetsFn func(*Source) ([]*Target, error), | ||
| getTargetIDFn func(*Target) TargetID, | ||
| lookupTargetsFn func([]TargetID) (map[TargetID]*Target, error), | ||
| ) error { | ||
| allTargets := []*Target{} | ||
| for i, source := range sources { | ||
| targets, err := getTargetsFn(source) | ||
| if err != nil { | ||
| return fmt.Errorf("getting %d-th targets: %w", i, err) | ||
| } | ||
| allTargets = append(allTargets, targets...) | ||
| } | ||
|
|
||
| seen := map[TargetID]bool{} | ||
| uniqueIds := []TargetID{} | ||
| for _, target := range allTargets { | ||
| id := getTargetIDFn(target) | ||
| if _, ok := seen[id]; !ok { | ||
| uniqueIds = append(uniqueIds, id) | ||
| seen[id] = true | ||
| } | ||
| } | ||
|
|
||
| populatedTargets, err := lookupTargetsFn(uniqueIds) | ||
| if err != nil { | ||
| return fmt.Errorf("looking up populated: %w", err) | ||
| } | ||
| for i, source := range sources { | ||
| targets, err := getTargetsFn(source) | ||
| if err != nil { | ||
| return fmt.Errorf("re-getting %d-th targets: %w", i, err) | ||
| } | ||
| for _, target := range targets { | ||
| id := getTargetIDFn(target) | ||
| if populated, ok := populatedTargets[id]; ok { | ||
| *target = *populated | ||
| } else { | ||
| return fmt.Errorf("can't find populated target %s", id) | ||
| } | ||
| } | ||
| } | ||
| return nil | ||
| } |
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