dataproc/apiv1/job_controller_client.go - gocloud - Git at Google

 // Copyright 2019 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     https://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 // Code generated by gapic-generator. DO NOT EDIT.

 package dataproc

 import (
 	"context"
 	"math"
 	"time"

 	"github.com/golang/protobuf/proto"
 	gax "github.com/googleapis/gax-go/v2"
 	"google.golang.org/api/iterator"
 	"google.golang.org/api/option"
 	"google.golang.org/api/transport"
 	dataprocpb "google.golang.org/genproto/googleapis/cloud/dataproc/v1"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/metadata"
 )

 // JobControllerCallOptions contains the retry settings for each method of JobControllerClient.
 type JobControllerCallOptions struct {
 	SubmitJob []gax.CallOption
 	GetJob    []gax.CallOption
 	ListJobs  []gax.CallOption
 	UpdateJob []gax.CallOption
 	CancelJob []gax.CallOption
 	DeleteJob []gax.CallOption
 }

 func defaultJobControllerClientOptions() []option.ClientOption {
 	return []option.ClientOption{
 		option.WithEndpoint("dataproc.googleapis.com:443"),
 		option.WithScopes(DefaultAuthScopes()...),
 		option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
 			grpc.MaxCallRecvMsgSize(math.MaxInt32))),
 	}
 }

 func defaultJobControllerCallOptions() *JobControllerCallOptions {
 	retry := map[[2]string][]gax.CallOption{
 		{"default", "idempotent"}: {
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.DeadlineExceeded,
 					codes.Internal,
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    100 * time.Millisecond,
 					Max:        60000 * time.Millisecond,
 					Multiplier: 1.3,
 				})
 			}),
 		},
 		{"default", "non_idempotent"}: {
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    100 * time.Millisecond,
 					Max:        60000 * time.Millisecond,
 					Multiplier: 1.3,
 				})
 			}),
 		},
 	}
 	return &JobControllerCallOptions{
 		SubmitJob: retry[[2]string{"default", "non_idempotent"}],
 		GetJob:    retry[[2]string{"default", "idempotent"}],
 		ListJobs:  retry[[2]string{"default", "idempotent"}],
 		UpdateJob: retry[[2]string{"default", "non_idempotent"}],
 		CancelJob: retry[[2]string{"default", "idempotent"}],
 		DeleteJob: retry[[2]string{"default", "non_idempotent"}],
 	}
 }

 // JobControllerClient is a client for interacting with Google Cloud Dataproc API.
 //
 // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
 type JobControllerClient struct {
 	// The connection to the service.
 	conn *grpc.ClientConn

 	// The gRPC API client.
 	jobControllerClient dataprocpb.JobControllerClient

 	// The call options for this service.
 	CallOptions *JobControllerCallOptions

 	// The x-goog-* metadata to be sent with each request.
 	xGoogMetadata metadata.MD
 }

 // NewJobControllerClient creates a new job controller client.
 //
 // The JobController provides methods to manage jobs.
 func NewJobControllerClient(ctx context.Context, opts ...option.ClientOption) (*JobControllerClient, error) {
 	conn, err := transport.DialGRPC(ctx, append(defaultJobControllerClientOptions(), opts...)...)
 	if err != nil {
 		return nil, err
 	}
 	c := &JobControllerClient{
 		conn:        conn,
 		CallOptions: defaultJobControllerCallOptions(),

 		jobControllerClient: dataprocpb.NewJobControllerClient(conn),
 	}
 	c.setGoogleClientInfo()
 	return c, nil
 }

 // Connection returns the client's connection to the API service.
 func (c *JobControllerClient) Connection() *grpc.ClientConn {
 	return c.conn
 }

 // Close closes the connection to the API service. The user should invoke this when
 // the client is no longer required.
 func (c *JobControllerClient) Close() error {
 	return c.conn.Close()
 }

 // setGoogleClientInfo sets the name and version of the application in
 // the `x-goog-api-client` header passed on each request. Intended for
 // use by Google-written clients.
 func (c *JobControllerClient) setGoogleClientInfo(keyval ...string) {
 	kv := append([]string{"gl-go", versionGo()}, keyval...)
 	kv = append(kv, "gapic", versionClient, "gax", gax.Version, "grpc", grpc.Version)
 	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
 }

 // SubmitJob submits a job to a cluster.
 func (c *JobControllerClient) SubmitJob(ctx context.Context, req *dataprocpb.SubmitJobRequest, opts ...gax.CallOption) (*dataprocpb.Job, error) {
 	ctx = insertMetadata(ctx, c.xGoogMetadata)
 	opts = append(c.CallOptions.SubmitJob[0:len(c.CallOptions.SubmitJob):len(c.CallOptions.SubmitJob)], opts...)
 	var resp *dataprocpb.Job
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.jobControllerClient.SubmitJob(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 // GetJob gets the resource representation for a job in a project.
 func (c *JobControllerClient) GetJob(ctx context.Context, req *dataprocpb.GetJobRequest, opts ...gax.CallOption) (*dataprocpb.Job, error) {
 	ctx = insertMetadata(ctx, c.xGoogMetadata)
 	opts = append(c.CallOptions.GetJob[0:len(c.CallOptions.GetJob):len(c.CallOptions.GetJob)], opts...)
 	var resp *dataprocpb.Job
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.jobControllerClient.GetJob(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 // ListJobs lists regions/{region}/jobs in a project.
 func (c *JobControllerClient) ListJobs(ctx context.Context, req *dataprocpb.ListJobsRequest, opts ...gax.CallOption) *JobIterator {
 	ctx = insertMetadata(ctx, c.xGoogMetadata)
 	opts = append(c.CallOptions.ListJobs[0:len(c.CallOptions.ListJobs):len(c.CallOptions.ListJobs)], opts...)
 	it := &JobIterator{}
 	req = proto.Clone(req).(*dataprocpb.ListJobsRequest)
 	it.InternalFetch = func(pageSize int, pageToken string) ([]*dataprocpb.Job, string, error) {
 		var resp *dataprocpb.ListJobsResponse
 		req.PageToken = pageToken
 		if pageSize > math.MaxInt32 {
 			req.PageSize = math.MaxInt32
 		} else {
 			req.PageSize = int32(pageSize)
 		}
 		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 			var err error
 			resp, err = c.jobControllerClient.ListJobs(ctx, req, settings.GRPC...)
 			return err
 		}, opts...)
 		if err != nil {
 			return nil, "", err
 		}
 		return resp.Jobs, resp.NextPageToken, nil
 	}
 	fetch := func(pageSize int, pageToken string) (string, error) {
 		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
 		if err != nil {
 			return "", err
 		}
 		it.items = append(it.items, items...)
 		return nextPageToken, nil
 	}
 	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
 	it.pageInfo.MaxSize = int(req.PageSize)
 	it.pageInfo.Token = req.PageToken
 	return it
 }

 // UpdateJob updates a job in a project.
 func (c *JobControllerClient) UpdateJob(ctx context.Context, req *dataprocpb.UpdateJobRequest, opts ...gax.CallOption) (*dataprocpb.Job, error) {
 	ctx = insertMetadata(ctx, c.xGoogMetadata)
 	opts = append(c.CallOptions.UpdateJob[0:len(c.CallOptions.UpdateJob):len(c.CallOptions.UpdateJob)], opts...)
 	var resp *dataprocpb.Job
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.jobControllerClient.UpdateJob(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 // CancelJob starts a job cancellation request. To access the job resource
 // after cancellation, call
 // regions/{region}/jobs.list (at /dataproc/docs/reference/rest/v1/projects.regions.jobs/list)
 // or
 // regions/{region}/jobs.get (at /dataproc/docs/reference/rest/v1/projects.regions.jobs/get).
 func (c *JobControllerClient) CancelJob(ctx context.Context, req *dataprocpb.CancelJobRequest, opts ...gax.CallOption) (*dataprocpb.Job, error) {
 	ctx = insertMetadata(ctx, c.xGoogMetadata)
 	opts = append(c.CallOptions.CancelJob[0:len(c.CallOptions.CancelJob):len(c.CallOptions.CancelJob)], opts...)
 	var resp *dataprocpb.Job
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.jobControllerClient.CancelJob(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 // DeleteJob deletes the job from the project. If the job is active, the delete fails,
 // and the response returns FAILED_PRECONDITION.
 func (c *JobControllerClient) DeleteJob(ctx context.Context, req *dataprocpb.DeleteJobRequest, opts ...gax.CallOption) error {
 	ctx = insertMetadata(ctx, c.xGoogMetadata)
 	opts = append(c.CallOptions.DeleteJob[0:len(c.CallOptions.DeleteJob):len(c.CallOptions.DeleteJob)], opts...)
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		_, err = c.jobControllerClient.DeleteJob(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	return err
 }

 // JobIterator manages a stream of *dataprocpb.Job.
 type JobIterator struct {
 	items    []*dataprocpb.Job
 	pageInfo *iterator.PageInfo
 	nextFunc func() error

 	// InternalFetch is for use by the Google Cloud Libraries only.
 	// It is not part of the stable interface of this package.
 	//
 	// InternalFetch returns results from a single call to the underlying RPC.
 	// The number of results is no greater than pageSize.
 	// If there are no more results, nextPageToken is empty and err is nil.
 	InternalFetch func(pageSize int, pageToken string) (results []*dataprocpb.Job, nextPageToken string, err error)
 }

 // PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
 func (it *JobIterator) PageInfo() *iterator.PageInfo {
 	return it.pageInfo
 }

 // Next returns the next result. Its second return value is iterator.Done if there are no more
 // results. Once Next returns Done, all subsequent calls will return Done.
 func (it *JobIterator) Next() (*dataprocpb.Job, error) {
 	var item *dataprocpb.Job
 	if err := it.nextFunc(); err != nil {
 		return item, err
 	}
 	item = it.items[0]
 	it.items = it.items[1:]
 	return item, nil
 }

 func (it *JobIterator) bufLen() int {
 	return len(it.items)
 }

 func (it *JobIterator) takeBuf() interface{} {
 	b := it.items
 	it.items = nil
 	return b
 }
	// Copyright 2019 Google LLC
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// https://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	// Code generated by gapic-generator. DO NOT EDIT.

	package dataproc

	import (
	"context"
	"math"
	"time"

	"github.com/golang/protobuf/proto"
	gax "github.com/googleapis/gax-go/v2"
	"google.golang.org/api/iterator"
	"google.golang.org/api/option"
	"google.golang.org/api/transport"
	dataprocpb "google.golang.org/genproto/googleapis/cloud/dataproc/v1"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	)

	// JobControllerCallOptions contains the retry settings for each method of JobControllerClient.
	type JobControllerCallOptions struct {
	SubmitJob []gax.CallOption
	GetJob []gax.CallOption
	ListJobs []gax.CallOption
	UpdateJob []gax.CallOption
	CancelJob []gax.CallOption
	DeleteJob []gax.CallOption
	}

	func defaultJobControllerClientOptions() []option.ClientOption {
	return []option.ClientOption{
	option.WithEndpoint("dataproc.googleapis.com:443"),
	option.WithScopes(DefaultAuthScopes()...),
	option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
	grpc.MaxCallRecvMsgSize(math.MaxInt32))),
	}
	}

	func defaultJobControllerCallOptions() *JobControllerCallOptions {
	retry := map[[2]string][]gax.CallOption{
	{"default", "idempotent"}: {
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.DeadlineExceeded,
	codes.Internal,
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 100 * time.Millisecond,
	Max: 60000 * time.Millisecond,
	Multiplier: 1.3,
	})
	}),
	},
	{"default", "non_idempotent"}: {
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 100 * time.Millisecond,
	Max: 60000 * time.Millisecond,
	Multiplier: 1.3,
	})
	}),
	},
	}
	return &JobControllerCallOptions{
	SubmitJob: retry[[2]string{"default", "non_idempotent"}],
	GetJob: retry[[2]string{"default", "idempotent"}],
	ListJobs: retry[[2]string{"default", "idempotent"}],
	UpdateJob: retry[[2]string{"default", "non_idempotent"}],
	CancelJob: retry[[2]string{"default", "idempotent"}],
	DeleteJob: retry[[2]string{"default", "non_idempotent"}],
	}
	}

	// JobControllerClient is a client for interacting with Google Cloud Dataproc API.
	//
	// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
	type JobControllerClient struct {
	// The connection to the service.
	conn *grpc.ClientConn

	// The gRPC API client.
	jobControllerClient dataprocpb.JobControllerClient

	// The call options for this service.
	CallOptions *JobControllerCallOptions

	// The x-goog-* metadata to be sent with each request.
	xGoogMetadata metadata.MD
	}

	// NewJobControllerClient creates a new job controller client.
	//
	// The JobController provides methods to manage jobs.
	func NewJobControllerClient(ctx context.Context, opts ...option.ClientOption) (*JobControllerClient, error) {
	conn, err := transport.DialGRPC(ctx, append(defaultJobControllerClientOptions(), opts...)...)
	if err != nil {
	return nil, err
	}
	c := &JobControllerClient{
	conn: conn,
	CallOptions: defaultJobControllerCallOptions(),

	jobControllerClient: dataprocpb.NewJobControllerClient(conn),
	}
	c.setGoogleClientInfo()
	return c, nil
	}

	// Connection returns the client's connection to the API service.
	func (c JobControllerClient) Connection() grpc.ClientConn {
	return c.conn
	}

	// Close closes the connection to the API service. The user should invoke this when
	// the client is no longer required.
	func (c *JobControllerClient) Close() error {
	return c.conn.Close()
	}

	// setGoogleClientInfo sets the name and version of the application in
	// the `x-goog-api-client` header passed on each request. Intended for
	// use by Google-written clients.
	func (c *JobControllerClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", versionGo()}, keyval...)
	kv = append(kv, "gapic", versionClient, "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
	}

	// SubmitJob submits a job to a cluster.
	func (c JobControllerClient) SubmitJob(ctx context.Context, req dataprocpb.SubmitJobRequest, opts ...gax.CallOption) (*dataprocpb.Job, error) {
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.SubmitJob[0:len(c.CallOptions.SubmitJob):len(c.CallOptions.SubmitJob)], opts...)
	var resp *dataprocpb.Job
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.jobControllerClient.SubmitJob(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	// GetJob gets the resource representation for a job in a project.
	func (c JobControllerClient) GetJob(ctx context.Context, req dataprocpb.GetJobRequest, opts ...gax.CallOption) (*dataprocpb.Job, error) {
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.GetJob[0:len(c.CallOptions.GetJob):len(c.CallOptions.GetJob)], opts...)
	var resp *dataprocpb.Job
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.jobControllerClient.GetJob(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	// ListJobs lists regions/{region}/jobs in a project.
	func (c JobControllerClient) ListJobs(ctx context.Context, req dataprocpb.ListJobsRequest, opts ...gax.CallOption) *JobIterator {
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.ListJobs[0:len(c.CallOptions.ListJobs):len(c.CallOptions.ListJobs)], opts...)
	it := &JobIterator{}
	req = proto.Clone(req).(*dataprocpb.ListJobsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*dataprocpb.Job, string, error) {
	var resp *dataprocpb.ListJobsResponse
	req.PageToken = pageToken
	if pageSize > math.MaxInt32 {
	req.PageSize = math.MaxInt32
	} else {
	req.PageSize = int32(pageSize)
	}
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.jobControllerClient.ListJobs(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, "", err
	}
	return resp.Jobs, resp.NextPageToken, nil
	}
	fetch := func(pageSize int, pageToken string) (string, error) {
	items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
	if err != nil {
	return "", err
	}
	it.items = append(it.items, items...)
	return nextPageToken, nil
	}
	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
	it.pageInfo.MaxSize = int(req.PageSize)
	it.pageInfo.Token = req.PageToken
	return it
	}

	// UpdateJob updates a job in a project.
	func (c JobControllerClient) UpdateJob(ctx context.Context, req dataprocpb.UpdateJobRequest, opts ...gax.CallOption) (*dataprocpb.Job, error) {
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.UpdateJob[0:len(c.CallOptions.UpdateJob):len(c.CallOptions.UpdateJob)], opts...)
	var resp *dataprocpb.Job
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.jobControllerClient.UpdateJob(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	// CancelJob starts a job cancellation request. To access the job resource
	// after cancellation, call
	// regions/{region}/jobs.list (at /dataproc/docs/reference/rest/v1/projects.regions.jobs/list)
	// or
	// regions/{region}/jobs.get (at /dataproc/docs/reference/rest/v1/projects.regions.jobs/get).
	func (c JobControllerClient) CancelJob(ctx context.Context, req dataprocpb.CancelJobRequest, opts ...gax.CallOption) (*dataprocpb.Job, error) {
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.CancelJob[0:len(c.CallOptions.CancelJob):len(c.CallOptions.CancelJob)], opts...)
	var resp *dataprocpb.Job
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.jobControllerClient.CancelJob(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	// DeleteJob deletes the job from the project. If the job is active, the delete fails,
	// and the response returns FAILED_PRECONDITION.
	func (c JobControllerClient) DeleteJob(ctx context.Context, req dataprocpb.DeleteJobRequest, opts ...gax.CallOption) error {
	ctx = insertMetadata(ctx, c.xGoogMetadata)
	opts = append(c.CallOptions.DeleteJob[0:len(c.CallOptions.DeleteJob):len(c.CallOptions.DeleteJob)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	_, err = c.jobControllerClient.DeleteJob(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	return err
	}

	// JobIterator manages a stream of *dataprocpb.Job.
	type JobIterator struct {
	items []*dataprocpb.Job
	pageInfo *iterator.PageInfo
	nextFunc func() error

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*dataprocpb.Job, nextPageToken string, err error)
	}

	// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
	func (it JobIterator) PageInfo() iterator.PageInfo {
	return it.pageInfo
	}

	// Next returns the next result. Its second return value is iterator.Done if there are no more
	// results. Once Next returns Done, all subsequent calls will return Done.
	func (it JobIterator) Next() (dataprocpb.Job, error) {
	var item *dataprocpb.Job
	if err := it.nextFunc(); err != nil {
	return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
	}

	func (it *JobIterator) bufLen() int {
	return len(it.items)
	}

	func (it *JobIterator) takeBuf() interface{} {
	b := it.items
	it.items = nil
	return b
	}