513cebe7b7
* Add Virtual Kubelet provider for VIC Initial virtual kubelet provider for VMware VIC. This provider currently handles creating and starting of a pod VM via the VIC portlayer and persona server. Image store handling via the VIC persona server. This provider currently requires the feature/wolfpack branch of VIC. * Added pod stop and delete. Also added node capacity. Added the ability to stop and delete pod VMs via VIC. Also retrieve node capacity information from the VCH. * Cleanup and readme file Some file clean up and added a Readme.md markdown file for the VIC provider. * Cleaned up errors, added function comments, moved operation code 1. Cleaned up error handling. Set standard for creating errors. 2. Added method prototype comments for all interface functions. 3. Moved PodCreator, PodStarter, PodStopper, and PodDeleter to a new folder. * Add mocking code and unit tests for podcache, podcreator, and podstarter Used the unit test framework used in VIC to handle assertions in the provider's unit test. Mocking code generated using OSS project mockery, which is compatible with the testify assertion framework. * Vendored packages for the VIC provider Requires feature/wolfpack branch of VIC and a few specific commit sha of projects used within VIC. * Implementation of POD Stopper and Deleter unit tests (#4) * Updated files for initial PR
106 lines
2.5 KiB
Go
106 lines
2.5 KiB
Go
/*
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Copyright (c) 2015 VMware, Inc. All Rights Reserved.
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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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package vim25
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import (
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"context"
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"net"
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"net/url"
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"time"
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"github.com/vmware/govmomi/vim25/soap"
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)
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type RetryFunc func(err error) (retry bool, delay time.Duration)
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// TemporaryNetworkError returns a RetryFunc that retries up to a maximum of n
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// times, only if the error returned by the RoundTrip function is a temporary
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// network error (for example: a connect timeout).
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func TemporaryNetworkError(n int) RetryFunc {
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return func(err error) (retry bool, delay time.Duration) {
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var nerr net.Error
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var ok bool
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// Never retry if this is not a network error.
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switch rerr := err.(type) {
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case *url.Error:
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if nerr, ok = rerr.Err.(net.Error); !ok {
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return false, 0
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}
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case net.Error:
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nerr = rerr
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default:
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return false, 0
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}
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if !nerr.Temporary() {
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return false, 0
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}
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// Don't retry if we're out of tries.
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if n--; n <= 0 {
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return false, 0
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}
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return true, 0
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}
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}
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type retry struct {
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roundTripper soap.RoundTripper
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// fn is a custom function that is called when an error occurs.
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// It returns whether or not to retry, and if so, how long to
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// delay before retrying.
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fn RetryFunc
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}
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// Retry wraps the specified soap.RoundTripper and invokes the
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// specified RetryFunc. The RetryFunc returns whether or not to
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// retry the call, and if so, how long to wait before retrying. If
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// the result of this function is to not retry, the original error
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// is returned from the RoundTrip function.
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func Retry(roundTripper soap.RoundTripper, fn RetryFunc) soap.RoundTripper {
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r := &retry{
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roundTripper: roundTripper,
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fn: fn,
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}
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return r
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}
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func (r *retry) RoundTrip(ctx context.Context, req, res soap.HasFault) error {
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var err error
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for {
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err = r.roundTripper.RoundTrip(ctx, req, res)
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if err == nil {
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break
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}
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// Invoke retry function to see if another attempt should be made.
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if retry, delay := r.fn(err); retry {
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time.Sleep(delay)
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continue
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}
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break
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}
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return err
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}
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