github.com/mirantis/virtlet@v1.5.2-0.20191204181327-1659b8a48e9b/pkg/metadata/metadata_test.go (about)

     1  /*
     2  Copyright 2018 Mirantis
     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 metadata
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/boltdb/bolt"
    23  	"github.com/jonboulle/clockwork"
    24  
    25  	"github.com/Mirantis/virtlet/pkg/metadata/fake"
    26  	"github.com/Mirantis/virtlet/pkg/metadata/types"
    27  )
    28  
    29  func dumpDB(t *testing.T, store Store, context string) error {
    30  	db := store.(*boltClient).db
    31  	t.Logf("==[ %s ]==> Start DB dump", context)
    32  	err := db.View(func(tx *bolt.Tx) error {
    33  		var iterateOverElements func(tx *bolt.Tx, bucket *bolt.Bucket, indent string)
    34  		iterateOverElements = func(tx *bolt.Tx, bucket *bolt.Bucket, indent string) {
    35  			var c *bolt.Cursor
    36  			if bucket == nil {
    37  				c = tx.Cursor()
    38  			} else {
    39  				c = bucket.Cursor()
    40  			}
    41  			for k, v := c.First(); k != nil; k, v = c.Next() {
    42  				if v == nil {
    43  					// SubBucket
    44  					t.Logf(" %s BUCKET: %s", indent, string(k))
    45  					if bucket == nil {
    46  						// root bucket
    47  						iterateOverElements(tx, tx.Bucket(k), "  "+indent)
    48  					} else {
    49  						iterateOverElements(tx, bucket.Bucket(k), "  "+indent)
    50  					}
    51  				} else {
    52  					t.Logf(" %s %s: %s\n", indent, string(k), string(v))
    53  				}
    54  			}
    55  		}
    56  		iterateOverElements(tx, nil, "|_")
    57  		return nil
    58  	})
    59  	t.Logf("==[ %s ]==> End DB dump", context)
    60  
    61  	return err
    62  }
    63  
    64  func setUpTestStore(t *testing.T, sandboxConfigs []*types.PodSandboxConfig, containerConfigs []*fake.ContainerTestConfig, clock clockwork.Clock) Store {
    65  	store, err := NewFakeStore()
    66  	if err != nil {
    67  		t.Fatal(err)
    68  	}
    69  	// Check filter on empty DB
    70  	sandboxList, err := store.ListPodSandboxes(&types.PodSandboxFilter{})
    71  	if err != nil {
    72  		t.Fatal(err)
    73  	}
    74  	if len(sandboxList) != 0 {
    75  		t.Errorf("ListPodSandboxes() returned non-empty result for an empty db")
    76  	}
    77  
    78  	if clock == nil {
    79  		clock = clockwork.NewRealClock()
    80  	}
    81  	for _, sandbox := range sandboxConfigs {
    82  		psi, _ := NewPodSandboxInfo(sandbox, "", types.PodSandboxState_SANDBOX_READY, clock)
    83  		if err := store.PodSandbox(sandbox.Uid).Save(
    84  			func(c *types.PodSandboxInfo) (*types.PodSandboxInfo, error) {
    85  				return psi, nil
    86  			},
    87  		); err != nil {
    88  			t.Fatal(err)
    89  		}
    90  	}
    91  
    92  	for _, container := range containerConfigs {
    93  		ci := &types.ContainerInfo{
    94  			Name:      container.Name,
    95  			CreatedAt: clock.Now().UnixNano(),
    96  			Config: types.VMConfig{
    97  				PodSandboxID:         container.SandboxID,
    98  				Image:                container.Image,
    99  				ContainerLabels:      container.Labels,
   100  				ContainerAnnotations: container.Annotations,
   101  			},
   102  		}
   103  		if err := store.Container(container.ContainerID).Save(
   104  			func(c *types.ContainerInfo) (*types.ContainerInfo, error) {
   105  				return ci, nil
   106  			},
   107  		); err != nil {
   108  			t.Fatal(err)
   109  		}
   110  	}
   111  
   112  	dumpDB(t, store, "init")
   113  
   114  	return store
   115  }