size.go

Documentation: k8s.io/kubernetes/test/e2e/framework

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package framework
    18  
    19  import (
    20  	"fmt"
    21  	"time"
    22  )
    23  
    24  // ResizeGroup resizes an instance group
    25  func ResizeGroup(group string, size int32) error {
    26  	if TestContext.ReportDir != "" {
    27  		CoreDump(TestContext.ReportDir)
    28  		defer CoreDump(TestContext.ReportDir)
    29  	}
    30  	return TestContext.CloudConfig.Provider.ResizeGroup(group, size)
    31  }
    32  
    33  // GetGroupNodes returns a node name for the specified node group
    34  func GetGroupNodes(group string) ([]string, error) {
    35  	return TestContext.CloudConfig.Provider.GetGroupNodes(group)
    36  }
    37  
    38  // GroupSize returns the size of an instance group
    39  func GroupSize(group string) (int, error) {
    40  	return TestContext.CloudConfig.Provider.GroupSize(group)
    41  }
    42  
    43  // WaitForGroupSize waits for node instance group reached the desired size
    44  func WaitForGroupSize(group string, size int32) error {
    45  	timeout := 30 * time.Minute
    46  	for start := time.Now(); time.Since(start) < timeout; time.Sleep(20 * time.Second) {
    47  		currentSize, err := GroupSize(group)
    48  		if err != nil {
    49  			Logf("Failed to get node instance group size: %v", err)
    50  			continue
    51  		}
    52  		if currentSize != int(size) {
    53  			Logf("Waiting for node instance group size %d, current size %d", size, currentSize)
    54  			continue
    55  		}
    56  		Logf("Node instance group has reached the desired size %d", size)
    57  		return nil
    58  	}
    59  	return fmt.Errorf("timeout waiting %v for node instance group size to be %d", timeout, size)
    60  }
    61
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