135 lines
3.2 KiB
Go
135 lines
3.2 KiB
Go
package terraform
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import (
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"fmt"
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"log"
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"github.com/hashicorp/terraform/config"
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)
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// EvalDeleteOutput is an EvalNode implementation that deletes an output
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// from the state.
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type EvalDeleteOutput struct {
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Name string
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}
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// TODO: test
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func (n *EvalDeleteOutput) Eval(ctx EvalContext) (interface{}, error) {
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state, lock := ctx.State()
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if state == nil {
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return nil, nil
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}
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// Get a write lock so we can access this instance
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lock.Lock()
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defer lock.Unlock()
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// Look for the module state. If we don't have one, create it.
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mod := state.ModuleByPath(ctx.Path())
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if mod == nil {
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return nil, nil
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}
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delete(mod.Outputs, n.Name)
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return nil, nil
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}
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// EvalWriteOutput is an EvalNode implementation that writes the output
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// for the given name to the current state.
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type EvalWriteOutput struct {
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Name string
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Sensitive bool
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Value *config.RawConfig
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// ContinueOnErr allows interpolation to fail during Input
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ContinueOnErr bool
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}
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// TODO: test
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func (n *EvalWriteOutput) Eval(ctx EvalContext) (interface{}, error) {
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// This has to run before we have a state lock, since interpolation also
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// reads the state
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cfg, err := ctx.Interpolate(n.Value, nil)
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// handle the error after we have the module from the state
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state, lock := ctx.State()
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if state == nil {
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return nil, fmt.Errorf("cannot write state to nil state")
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}
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// Get a write lock so we can access this instance
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lock.Lock()
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defer lock.Unlock()
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// Look for the module state. If we don't have one, create it.
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mod := state.ModuleByPath(ctx.Path())
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if mod == nil {
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mod = state.AddModule(ctx.Path())
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}
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// handling the interpolation error
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if err != nil {
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if n.ContinueOnErr || flagWarnOutputErrors {
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log.Printf("[ERROR] Output interpolation %q failed: %s", n.Name, err)
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// if we're continuing, make sure the output is included, and
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// marked as unknown
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mod.Outputs[n.Name] = &OutputState{
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Type: "string",
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Value: config.UnknownVariableValue,
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}
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return nil, EvalEarlyExitError{}
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}
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return nil, err
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}
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// Get the value from the config
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var valueRaw interface{} = config.UnknownVariableValue
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if cfg != nil {
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var ok bool
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valueRaw, ok = cfg.Get("value")
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if !ok {
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valueRaw = ""
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}
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if cfg.IsComputed("value") {
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valueRaw = config.UnknownVariableValue
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}
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}
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switch valueTyped := valueRaw.(type) {
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case string:
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mod.Outputs[n.Name] = &OutputState{
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Type: "string",
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Sensitive: n.Sensitive,
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Value: valueTyped,
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}
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case []interface{}:
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mod.Outputs[n.Name] = &OutputState{
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Type: "list",
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Sensitive: n.Sensitive,
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Value: valueTyped,
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}
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case map[string]interface{}:
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mod.Outputs[n.Name] = &OutputState{
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Type: "map",
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Sensitive: n.Sensitive,
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Value: valueTyped,
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}
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case []map[string]interface{}:
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// an HCL map is multi-valued, so if this was read out of a config the
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// map may still be in a slice.
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if len(valueTyped) == 1 {
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mod.Outputs[n.Name] = &OutputState{
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Type: "map",
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Sensitive: n.Sensitive,
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Value: valueTyped[0],
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}
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break
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}
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return nil, fmt.Errorf("output %s type (%T) with %d values not valid for type map",
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n.Name, valueTyped, len(valueTyped))
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default:
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return nil, fmt.Errorf("output %s is not a valid type (%T)\n", n.Name, valueTyped)
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}
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return nil, nil
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}
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