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| 1 | +// The MIT License |
| 2 | +// |
| 3 | +// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved. |
| 4 | +// |
| 5 | +// Copyright (c) 2020 Uber Technologies, Inc. |
| 6 | +// |
| 7 | +// Permission is hereby granted, free of charge, to any person obtaining a copy |
| 8 | +// of this software and associated documentation files (the "Software"), to deal |
| 9 | +// in the Software without restriction, including without limitation the rights |
| 10 | +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 11 | +// copies of the Software, and to permit persons to whom the Software is |
| 12 | +// furnished to do so, subject to the following conditions: |
| 13 | +// |
| 14 | +// The above copyright notice and this permission notice shall be included in |
| 15 | +// all copies or substantial portions of the Software. |
| 16 | +// |
| 17 | +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 20 | +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 21 | +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 | +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 23 | +// THE SOFTWARE. |
| 24 | + |
| 25 | +package deletenamespace |
| 26 | + |
| 27 | +import ( |
| 28 | + "context" |
| 29 | + "fmt" |
| 30 | + "math/rand" |
| 31 | + "time" |
| 32 | + |
| 33 | + enumspb "go.temporal.io/api/enums/v1" |
| 34 | + "go.temporal.io/api/serviceerror" |
| 35 | + |
| 36 | + "go.temporal.io/server/common/log" |
| 37 | + "go.temporal.io/server/common/log/tag" |
| 38 | + "go.temporal.io/server/common/metrics" |
| 39 | + "go.temporal.io/server/common/namespace" |
| 40 | + "go.temporal.io/server/common/persistence" |
| 41 | +) |
| 42 | + |
| 43 | +type ( |
| 44 | + activities struct { |
| 45 | + metadataManager persistence.MetadataManager |
| 46 | + metricsClient metrics.Client |
| 47 | + logger log.Logger |
| 48 | + } |
| 49 | +) |
| 50 | + |
| 51 | +func NewActivities( |
| 52 | + metadataManager persistence.MetadataManager, |
| 53 | + metricsClient metrics.Client, |
| 54 | + logger log.Logger, |
| 55 | +) *activities { |
| 56 | + return &activities{ |
| 57 | + metadataManager: metadataManager, |
| 58 | + metricsClient: metricsClient, |
| 59 | + logger: logger, |
| 60 | + } |
| 61 | +} |
| 62 | + |
| 63 | +func (a *activities) GetNamespaceIDActivity(_ context.Context, nsName namespace.Name) (namespace.ID, error) { |
| 64 | + getNamespaceRequest := &persistence.GetNamespaceRequest{ |
| 65 | + Name: nsName.String(), |
| 66 | + } |
| 67 | + |
| 68 | + getNamespaceResponse, err := a.metadataManager.GetNamespace(getNamespaceRequest) |
| 69 | + if err != nil { |
| 70 | + return namespace.EmptyID, err |
| 71 | + } |
| 72 | + |
| 73 | + if getNamespaceResponse.Namespace == nil || getNamespaceResponse.Namespace.Info == nil || getNamespaceResponse.Namespace.Info.Id == "" { |
| 74 | + return namespace.EmptyID, serviceerror.NewInternal("namespace info is corrupted") |
| 75 | + } |
| 76 | + |
| 77 | + return namespace.ID(getNamespaceResponse.Namespace.Info.Id), nil |
| 78 | +} |
| 79 | + |
| 80 | +func (a *activities) MarkNamespaceDeletedActivity(_ context.Context, nsName namespace.Name) error { |
| 81 | + getNamespaceRequest := &persistence.GetNamespaceRequest{ |
| 82 | + Name: nsName.String(), |
| 83 | + } |
| 84 | + |
| 85 | + metadata, err := a.metadataManager.GetMetadata() |
| 86 | + if err != nil { |
| 87 | + a.metricsClient.IncCounter(metrics.DeleteNamespaceWorkflowScope, metrics.ReadNamespaceFailuresCount) |
| 88 | + a.logger.Error("Unable to get cluster metadata.", tag.WorkflowNamespace(nsName.String()), tag.Error(err)) |
| 89 | + return err |
| 90 | + } |
| 91 | + |
| 92 | + ns, err := a.metadataManager.GetNamespace(getNamespaceRequest) |
| 93 | + if err != nil { |
| 94 | + a.metricsClient.IncCounter(metrics.DeleteNamespaceWorkflowScope, metrics.ReadNamespaceFailuresCount) |
| 95 | + a.logger.Error("Unable to get namespace details.", tag.WorkflowNamespace(nsName.String()), tag.Error(err)) |
| 96 | + return err |
| 97 | + } |
| 98 | + |
| 99 | + ns.Namespace.Info.State = enumspb.NAMESPACE_STATE_DELETED |
| 100 | + |
| 101 | + updateRequest := &persistence.UpdateNamespaceRequest{ |
| 102 | + Namespace: ns.Namespace, |
| 103 | + IsGlobalNamespace: ns.IsGlobalNamespace, |
| 104 | + NotificationVersion: metadata.NotificationVersion, |
| 105 | + } |
| 106 | + |
| 107 | + err = a.metadataManager.UpdateNamespace(updateRequest) |
| 108 | + if err != nil { |
| 109 | + a.metricsClient.IncCounter(metrics.DeleteNamespaceWorkflowScope, metrics.UpdateNamespaceFailuresCount) |
| 110 | + a.logger.Error("Unable to update namespace state to Deleted.", tag.WorkflowNamespace(nsName.String()), tag.Error(err)) |
| 111 | + return err |
| 112 | + } |
| 113 | + return nil |
| 114 | +} |
| 115 | + |
| 116 | +func (a *activities) GenerateDeletedNamespaceNameActivity(_ context.Context, nsName namespace.Name) (namespace.Name, error) { |
| 117 | + var letters = []rune("1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ") |
| 118 | + const suffixLength = 5 |
| 119 | + rand.Seed(time.Now().UnixNano()) |
| 120 | + |
| 121 | + for { // Just in case. Generated name should always be unique after first attempt. |
| 122 | + b := make([]rune, suffixLength) |
| 123 | + for i := range b { |
| 124 | + b[i] = letters[rand.Intn(len(letters))] |
| 125 | + } |
| 126 | + |
| 127 | + newName := fmt.Sprintf("%s-deleted-%s", nsName, string(b)) |
| 128 | + |
| 129 | + _, err := a.metadataManager.GetNamespace(&persistence.GetNamespaceRequest{ |
| 130 | + Name: newName, |
| 131 | + }) |
| 132 | + switch err.(type) { |
| 133 | + case nil: |
| 134 | + a.logger.Warn("Regenerate namespace name due to collision.", tag.WorkflowNamespace(nsName.String()), tag.WorkflowNamespace(newName)) |
| 135 | + case *serviceerror.NotFound: |
| 136 | + a.logger.Info("Generated new name for deleted namespace.", tag.WorkflowNamespace(nsName.String()), tag.WorkflowNamespace(newName)) |
| 137 | + return namespace.Name(newName), nil |
| 138 | + default: |
| 139 | + a.metricsClient.IncCounter(metrics.DeleteNamespaceWorkflowScope, metrics.ReadNamespaceFailuresCount) |
| 140 | + a.logger.Error("Unable to get namespace details.", tag.WorkflowNamespace(nsName.String()), tag.Error(err)) |
| 141 | + return namespace.EmptyName, err |
| 142 | + } |
| 143 | + } |
| 144 | +} |
| 145 | + |
| 146 | +func (a *activities) RenameNamespaceActivity(_ context.Context, previousName namespace.Name, newName namespace.Name) error { |
| 147 | + renameNamespaceRequest := &persistence.RenameNamespaceRequest{ |
| 148 | + PreviousName: previousName.String(), |
| 149 | + NewName: newName.String(), |
| 150 | + } |
| 151 | + |
| 152 | + err := a.metadataManager.RenameNamespace(renameNamespaceRequest) |
| 153 | + if err != nil { |
| 154 | + a.metricsClient.IncCounter(metrics.DeleteNamespaceWorkflowScope, metrics.RenameNamespaceFailuresCount) |
| 155 | + a.logger.Error("Unable to rename namespace.", tag.WorkflowNamespace(previousName.String()), tag.Error(err)) |
| 156 | + return err |
| 157 | + } |
| 158 | + |
| 159 | + a.metricsClient.IncCounter(metrics.DeleteNamespaceWorkflowScope, metrics.RenameNamespaceSuccessCount) |
| 160 | + a.logger.Info("Namespace renamed successfully.", tag.WorkflowNamespace(previousName.String()), tag.WorkflowNamespace(newName.String())) |
| 161 | + return nil |
| 162 | +} |
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