add operation results structs (#253)

* add operation results structs

Operations, both backup and restore, need to hold the
results of their operation, and be able to marshal the struct
to json for output.

src/internal/operations/backup.go

@@ -13,26 +13,34 @@ import (
 // BackupOperation wraps an operation with backup-specific props.
 type BackupOperation struct {
 	operation
-	Version string
+
+	Results BackupResults `json:"results"`
+	Targets []string      `json:"selectors"` // todo: replace with Selectors
+	Version string        `json:"version"`
 
 	account account.Account
+}
 
-	Targets []string // something for targets/filter/source/app&users/etc
+// BackupResults aggregate the details of the result of the operation.
+type BackupResults struct {
+	summary
+	metrics
+	// todo: RestorePoint RestorePoint
 }
 
 // NewBackupOperation constructs and validates a backup operation.
 func NewBackupOperation(
 	ctx context.Context,
-	opts OperationOpts,
+	opts Options,
 	kw *kopia.KopiaWrapper,
 	acct account.Account,
 	targets []string,
 ) (BackupOperation, error) {
 	op := BackupOperation{
 		operation: newOperation(opts, kw),
+		Targets:   targets,
 		Version:   "v0",
 		account:   acct,
-		Targets:   targets,
 	}
 	if err := op.validate(); err != nil {
 		return BackupOperation{}, err

src/internal/operations/backup_test.go

@@ -43,20 +43,20 @@ func (suite *BackupOpIntegrationSuite) TestNewBackupOperation() {
 
 	table := []struct {
 		name     string
-		opts     operations.OperationOpts
+		opts     operations.Options
 		kw       *kopia.KopiaWrapper
 		acct     account.Account
 		targets  []string
 		errCheck assert.ErrorAssertionFunc
 	}{
-		{"good", operations.OperationOpts{}, kw, acct, nil, assert.NoError},
-		{"missing kopia", operations.OperationOpts{}, nil, acct, nil, assert.Error},
+		{"good", operations.Options{}, kw, acct, nil, assert.NoError},
+		{"missing kopia", operations.Options{}, nil, acct, nil, assert.Error},
 	}
 	for _, test := range table {
 		suite.T().Run(test.name, func(t *testing.T) {
 			_, err := operations.NewBackupOperation(
 				context.Background(),
-				operations.OperationOpts{},
+				operations.Options{},
 				test.kw,
 				test.acct,
 				nil)

src/internal/operations/operation.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	multierror "github.com/hashicorp/go-multierror"
 	"github.com/pkg/errors"
 
 	"github.com/alcionai/corso/internal/kopia"
@@ -18,35 +19,38 @@ const (
 	Failed
 )
 
+// --------------------------------------------------------------------------------
+// Operation Core
+// --------------------------------------------------------------------------------
+
 // An operation tracks the in-progress workload of some long-running process.
 // Specific processes (eg: backups, restores, etc) are expected to wrap operation
 // with process specific details.
 type operation struct {
-	ID        uuid.UUID // system generated identifier
-	CreatedAt time.Time // datetime of the operation's creation
+	ID        uuid.UUID `json:"id"`        // system generated identifier
+	CreatedAt time.Time `json:"createdAt"` // datetime of the operation's creation
+	Options   Options   `json:"options"`
+	Status    opStatus  `json:"status"`
 
-	options OperationOpts
-	kopia   *kopia.KopiaWrapper
-
-	Status opStatus
-	Errors []error
+	kopia *kopia.KopiaWrapper
 }
 
-// OperationOpts configure some parameters of the operation
-type OperationOpts struct {
+// Options configure some parameters of the operation
+type Options struct {
+	// todo: collision handling
+	// todo: fast fail vs best attempt
 }
 
 func newOperation(
-	opts OperationOpts,
+	opts Options,
 	kw *kopia.KopiaWrapper,
 ) operation {
 	return operation{
 		ID:        uuid.New(),
 		CreatedAt: time.Now(),
-		options:   opts,
+		Options:   opts,
 		kopia:     kw,
 		Status:    InProgress,
-		Errors:    []error{},
 	}
 }
 
@@ -56,3 +60,22 @@ func (op operation) validate() error {
 	}
 	return nil
 }
+
+// --------------------------------------------------------------------------------
+// Results
+// --------------------------------------------------------------------------------
+
+// Summary tracks the total files touched and errors produced
+// during an operation.
+type summary struct {
+	ItemsRead    int              `json:"itemsRead,omitempty"`
+	ItemsWritten int              `json:"itemsWritten,omitempty"`
+	ReadErrors   multierror.Error `json:"readErrors,omitempty"`
+	WriteErrors  multierror.Error `json:"writeErrors,omitempty"`
+}
+
+// Metrics tracks performance details such as timing, throughput, etc.
+type metrics struct {
+	StartedAt   time.Time `json:"startedAt"`
+	CompletedAt time.Time `json:"completedAt"`
+}

src/internal/operations/operation_test.go

@@ -19,8 +19,7 @@ func TestOperationSuite(t *testing.T) {
 
 func (suite *OperationSuite) TestNewOperation() {
 	t := suite.T()
-	op := newOperation(OperationOpts{}, nil)
-	assert.NotNil(t, op.Errors)
+	op := newOperation(Options{}, nil)
 	assert.NotNil(t, op.ID)
 }
 
@@ -36,7 +35,7 @@ func (suite *OperationSuite) TestOperation_Validate() {
 	}
 	for _, test := range table {
 		suite.T().Run(test.name, func(t *testing.T) {
-			op := newOperation(OperationOpts{}, test.kw)
+			op := newOperation(Options{}, test.kw)
 			test.errCheck(t, op.validate())
 		})
 	}

src/internal/operations/restore.go

@@ -13,18 +13,25 @@ import (
 // RestoreOperation wraps an operation with restore-specific props.
 type RestoreOperation struct {
 	operation
-	Version string
 
-	restorePointID string
-	account        account.Account
+	RestorePointID string         `json:"restorePointID"`
+	Results        RestoreResults `json:"results"`
+	Targets        []string       `json:"selectors"` // todo: replace with Selectors
+	Version        string         `json:"bersion"`
 
-	Targets []string // something for targets/filter/source/app&users/etc
+	account account.Account
+}
+
+// RestoreResults aggregate the details of the results of the operation.
+type RestoreResults struct {
+	summary
+	metrics
 }
 
 // NewRestoreOperation constructs and validates a restore operation.
 func NewRestoreOperation(
 	ctx context.Context,
-	opts OperationOpts,
+	opts Options,
 	kw *kopia.KopiaWrapper,
 	acct account.Account,
 	restorePointID string,
@@ -32,10 +39,10 @@ func NewRestoreOperation(
 ) (RestoreOperation, error) {
 	op := RestoreOperation{
 		operation:      newOperation(opts, kw),
+		RestorePointID: restorePointID,
+		Targets:        targets,
 		Version:        "v0",
 		account:        acct,
-		restorePointID: restorePointID,
-		Targets:        targets,
 	}
 	if err := op.validate(); err != nil {
 		return RestoreOperation{}, err
@@ -51,7 +58,7 @@ func (op RestoreOperation) validate() error {
 // Run begins a synchronous restore operation.
 // todo (keepers): return stats block in first param.
 func (op *RestoreOperation) Run(ctx context.Context) error {
-	dc, err := op.kopia.RestoreSingleItem(ctx, op.restorePointID, op.Targets)
+	dc, err := op.kopia.RestoreSingleItem(ctx, op.RestorePointID, op.Targets)
 	if err != nil {
 		return errors.Wrap(err, "retrieving service data")
 	}

src/internal/operations/restore_test.go

@@ -37,20 +37,20 @@ func (suite *RestoreOpIntegrationSuite) TestNewRestoreOperation() {
 
 	table := []struct {
 		name     string
-		opts     operations.OperationOpts
+		opts     operations.Options
 		kw       *kopia.KopiaWrapper
 		acct     account.Account
 		targets  []string
 		errCheck assert.ErrorAssertionFunc
 	}{
-		{"good", operations.OperationOpts{}, kw, acct, nil, assert.NoError},
-		{"missing kopia", operations.OperationOpts{}, nil, acct, nil, assert.Error},
+		{"good", operations.Options{}, kw, acct, nil, assert.NoError},
+		{"missing kopia", operations.Options{}, nil, acct, nil, assert.Error},
 	}
 	for _, test := range table {
 		suite.T().Run(test.name, func(t *testing.T) {
 			_, err := operations.NewRestoreOperation(
 				context.Background(),
-				operations.OperationOpts{},
+				operations.Options{},
 				test.kw,
 				test.acct,
 				"restore-point-id",

src/pkg/repository/repository.go

@@ -94,7 +94,7 @@ func (r *Repository) Close(ctx context.Context) error {
 func (r Repository) NewBackup(ctx context.Context, targets []string) (operations.BackupOperation, error) {
 	return operations.NewBackupOperation(
 		ctx,
-		operations.OperationOpts{},
+		operations.Options{},
 		r.dataLayer,
 		r.Account,
 		targets)
@@ -104,7 +104,7 @@ func (r Repository) NewBackup(ctx context.Context, targets []string) (operations
 func (r Repository) NewRestore(ctx context.Context, restorePointID string, targets []string) (operations.RestoreOperation, error) {
 	return operations.NewRestoreOperation(
 		ctx,
-		operations.OperationOpts{},
+		operations.Options{},
 		r.dataLayer,
 		r.Account,
 		restorePointID,