|
| 1 | +package terraform |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "fmt" |
| 6 | + |
| 7 | + "github.com/imdario/mergo" |
| 8 | + "github.com/spf13/afero" |
| 9 | + "kusionstack.io/kusion/pkg/engine/models" |
| 10 | + "kusionstack.io/kusion/pkg/engine/runtime" |
| 11 | + "kusionstack.io/kusion/pkg/engine/runtime/terraform/tfops" |
| 12 | + "kusionstack.io/kusion/pkg/status" |
| 13 | +) |
| 14 | + |
| 15 | +var _ runtime.Runtime = &TerraformRuntime{} |
| 16 | + |
| 17 | +type TerraformRuntime struct { |
| 18 | + tfops.WorkspaceStore |
| 19 | +} |
| 20 | + |
| 21 | +func NewTerraformRuntime() (runtime.Runtime, error) { |
| 22 | + fs := afero.Afero{Fs: afero.NewOsFs()} |
| 23 | + ws, err := tfops.GetWorkspaceStore(fs) |
| 24 | + if err != nil { |
| 25 | + return nil, err |
| 26 | + } |
| 27 | + TFRuntime := &TerraformRuntime{ws} |
| 28 | + return TFRuntime, nil |
| 29 | +} |
| 30 | + |
| 31 | +// Apply terraform apply resource |
| 32 | +func (t *TerraformRuntime) Apply(ctx context.Context, request *runtime.ApplyRequest) *runtime.ApplyResponse { |
| 33 | + planState := request.PlanResource |
| 34 | + w, ok := t.Store[planState.ResourceKey()] |
| 35 | + if !ok { |
| 36 | + err := t.Create(ctx, planState) |
| 37 | + if err != nil { |
| 38 | + return &runtime.ApplyResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 39 | + } |
| 40 | + w = t.Store[planState.ResourceKey()] |
| 41 | + } |
| 42 | + |
| 43 | + // get terraform provider version |
| 44 | + providerAddr, err := w.GetProvider() |
| 45 | + if err != nil { |
| 46 | + return &runtime.ApplyResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 47 | + } |
| 48 | + |
| 49 | + // terraform dry run merge state |
| 50 | + // TODO: terraform dry run apply,not only merge state |
| 51 | + if request.DryRun { |
| 52 | + prior := request.PriorResource.DeepCopy() |
| 53 | + if err := mergo.Merge(prior, planState, mergo.WithSliceDeepCopy, mergo.WithOverride); err != nil { |
| 54 | + return &runtime.ApplyResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 55 | + } |
| 56 | + |
| 57 | + return &runtime.ApplyResponse{Resource: &models.Resource{ |
| 58 | + ID: planState.ID, |
| 59 | + Type: planState.Type, |
| 60 | + Attributes: prior.Attributes, |
| 61 | + DependsOn: planState.DependsOn, |
| 62 | + Extensions: planState.Extensions, |
| 63 | + }, Status: nil} |
| 64 | + } |
| 65 | + w.SetResource(planState) |
| 66 | + |
| 67 | + if err := w.WriteHCL(); err != nil { |
| 68 | + return &runtime.ApplyResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 69 | + } |
| 70 | + |
| 71 | + tfstate, err := w.Apply(ctx) |
| 72 | + if err != nil { |
| 73 | + return &runtime.ApplyResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 74 | + } |
| 75 | + |
| 76 | + r := tfops.ConvertTFState(tfstate, providerAddr) |
| 77 | + |
| 78 | + return &runtime.ApplyResponse{ |
| 79 | + Resource: &models.Resource{ |
| 80 | + ID: r.ID, |
| 81 | + Type: r.Type, |
| 82 | + Attributes: r.Attributes, |
| 83 | + DependsOn: planState.DependsOn, |
| 84 | + Extensions: planState.Extensions, |
| 85 | + }, |
| 86 | + Status: nil, |
| 87 | + } |
| 88 | +} |
| 89 | + |
| 90 | +// Read terraform show state |
| 91 | +func (t *TerraformRuntime) Read(ctx context.Context, request *runtime.ReadRequest) *runtime.ReadResponse { |
| 92 | + priorState := request.PriorResource |
| 93 | + planState := request.PlanResource |
| 94 | + if priorState == nil { |
| 95 | + return &runtime.ReadResponse{Resource: nil, Status: nil} |
| 96 | + } |
| 97 | + var tfstate *tfops.TFState |
| 98 | + w, ok := t.Store[planState.ResourceKey()] |
| 99 | + if !ok { |
| 100 | + err := t.Create(ctx, planState) |
| 101 | + if err != nil { |
| 102 | + return &runtime.ReadResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 103 | + } |
| 104 | + w = t.Store[priorState.ResourceKey()] |
| 105 | + if err := w.WriteTFState(priorState); err != nil { |
| 106 | + return &runtime.ReadResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 107 | + } |
| 108 | + } |
| 109 | + |
| 110 | + tfstate, err := w.RefreshOnly(ctx) |
| 111 | + if err != nil { |
| 112 | + return &runtime.ReadResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 113 | + } |
| 114 | + if tfstate == nil || tfstate.Values == nil { |
| 115 | + return &runtime.ReadResponse{Resource: nil, Status: nil} |
| 116 | + } |
| 117 | + |
| 118 | + // get terraform provider addr |
| 119 | + providerAddr, err := w.GetProvider() |
| 120 | + if err != nil { |
| 121 | + return &runtime.ReadResponse{Resource: nil, Status: status.NewErrorStatus(err)} |
| 122 | + } |
| 123 | + |
| 124 | + r := tfops.ConvertTFState(tfstate, providerAddr) |
| 125 | + return &runtime.ReadResponse{ |
| 126 | + Resource: &models.Resource{ |
| 127 | + ID: r.ID, |
| 128 | + Type: r.Type, |
| 129 | + Attributes: r.Attributes, |
| 130 | + DependsOn: planState.DependsOn, |
| 131 | + Extensions: planState.Extensions, |
| 132 | + }, |
| 133 | + Status: nil, |
| 134 | + } |
| 135 | +} |
| 136 | + |
| 137 | +// Delete terraform resource and remove workspace |
| 138 | +func (t *TerraformRuntime) Delete(ctx context.Context, request *runtime.DeleteRequest) *runtime.DeleteResponse { |
| 139 | + w, ok := t.Store[request.Resource.ResourceKey()] |
| 140 | + if !ok { |
| 141 | + return &runtime.DeleteResponse{Status: status.NewErrorStatus(fmt.Errorf("%s terraform workspace not exist, cannot delete", request.Resource.ResourceKey()))} |
| 142 | + } |
| 143 | + if err := w.Destroy(ctx); err != nil { |
| 144 | + return &runtime.DeleteResponse{Status: status.NewErrorStatus(err)} |
| 145 | + } |
| 146 | + |
| 147 | + if err := t.Remove(ctx, request.Resource); err != nil { |
| 148 | + return &runtime.DeleteResponse{Status: status.NewErrorStatus(err)} |
| 149 | + } |
| 150 | + return &runtime.DeleteResponse{Status: nil} |
| 151 | +} |
| 152 | + |
| 153 | +// Watch terraform resource |
| 154 | +func (t *TerraformRuntime) Watch(ctx context.Context, request *runtime.WatchRequest) *runtime.WatchResponse { |
| 155 | + return nil |
| 156 | +} |
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