Method readThenWrite

command/kv_patch.go:282–364

(client *api.Client, path string, newData map[string]interface{})

}

func (c *KVPatchCommand) readThenWrite(client *api.Client, path string, newData map[string]interface{}) (*api.Secret, int) {
	// First, do a read.
	// Note that we don't want to see curl output for the read request.
	curOutputCurl := client.OutputCurlString()
	client.SetOutputCurlString(false)
	outputPolicy := client.OutputPolicy()
	client.SetOutputPolicy(false)
	secret, err := kvReadRequest(client, path, nil)
	if err != nil {
		c.UI.Error(fmt.Sprintf("Error doing pre-read at %s: %s", path, err))
		return nil, 2
	}
	client.SetOutputCurlString(curOutputCurl)
	client.SetOutputPolicy(outputPolicy)

	// Make sure a value already exists
	if secret == nil || secret.Data == nil {
		c.UI.Error(fmt.Sprintf("No value found at %s", path))
		return nil, 2
	}

	// Verify metadata found
	rawMeta, ok := secret.Data["metadata"]
	if !ok || rawMeta == nil {
		c.UI.Error(fmt.Sprintf("No metadata found at %s; patch only works on existing data", path))
		return nil, 2
	}
	meta, ok := rawMeta.(map[string]interface{})
	if !ok {
		c.UI.Error(fmt.Sprintf("Metadata found at %s is not the expected type (JSON object)", path))
		return nil, 2
	}
	if meta == nil {
		c.UI.Error(fmt.Sprintf("No metadata found at %s; patch only works on existing data", path))
		return nil, 2
	}

	// Verify old data found
	rawData, ok := secret.Data["data"]
	if !ok || rawData == nil {
		c.UI.Error(fmt.Sprintf("No data found at %s; patch only works on existing data", path))
		return nil, 2
	}
	data, ok := rawData.(map[string]interface{})
	if !ok {
		c.UI.Error(fmt.Sprintf("Data found at %s is not the expected type (JSON object)", path))
		return nil, 2
	}
	if data == nil {
		c.UI.Error(fmt.Sprintf("No data found at %s; patch only works on existing data", path))
		return nil, 2
	}

	// Copy new data over
	for k, v := range newData {
		data[k] = v
	}