80 lines
2.5 KiB
Go
80 lines
2.5 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// This code is directly lifted from the Kubernetes codebase.
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// For reference:
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// https://github.com/kubernetes/kubernetes/blob/release-1.23/staging/src/k8s.io/kubectl/pkg/cmd/logs/logs.go#L411-L440
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// https://github.com/kubernetes/kubernetes/blob/release-1.23/staging/src/k8s.io/kubectl/pkg/util/util.go#L32-L42
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package lifted
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import (
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"bufio"
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"context"
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"io"
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"time"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/rest"
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)
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// +lifted:source=https://github.com/kubernetes/kubernetes/blob/release-1.23/staging/src/k8s.io/kubectl/pkg/cmd/logs/logs.go#L411-L440
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// DefaultConsumeRequest reads the data from request and writes into
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// the out writer. It buffers data from requests until the newline or io.EOF
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// occurs in the data, so it doesn't interleave logs sub-line
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// when running concurrently.
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//
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// A successful read returns err == nil, not err == io.EOF.
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// Because the function is defined to read from request until io.EOF, it does
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// not treat an io.EOF as an error to be reported.
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func DefaultConsumeRequest(request rest.ResponseWrapper, out io.Writer) error {
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readCloser, err := request.Stream(context.TODO())
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if err != nil {
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return err
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}
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defer readCloser.Close()
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r := bufio.NewReader(readCloser)
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for {
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bytes, err := r.ReadBytes('\n')
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if _, err := out.Write(bytes); err != nil {
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return err
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}
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if err != nil {
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if err != io.EOF {
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return err
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}
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return nil
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}
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}
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}
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// +lifted:source=https://github.com/kubernetes/kubernetes/blob/release-1.23/staging/src/k8s.io/kubectl/pkg/util/util.go#L32-L42
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// ParseRFC3339 parses an RFC3339 date in either RFC3339Nano or RFC3339 format.
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func ParseRFC3339(s string, nowFn func() metav1.Time) (metav1.Time, error) {
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if t, timeErr := time.Parse(time.RFC3339Nano, s); timeErr == nil {
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return metav1.Time{Time: t}, nil
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}
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t, err := time.Parse(time.RFC3339, s)
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if err != nil {
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return metav1.Time{}, err
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}
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return metav1.Time{Time: t}, nil
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}
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