116 lines
2.9 KiB
Go
116 lines
2.9 KiB
Go
package triton
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"github.com/hashicorp/packer/helper/communicator"
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"github.com/hashicorp/packer/template/interpolate"
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"github.com/joyent/triton-go"
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"github.com/joyent/triton-go/authentication"
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)
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// AccessConfig is for common configuration related to Triton access
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type AccessConfig struct {
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Endpoint string `mapstructure:"triton_url"`
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Account string `mapstructure:"triton_account"`
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KeyID string `mapstructure:"triton_key_id"`
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KeyMaterial string `mapstructure:"triton_key_material"`
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signer authentication.Signer
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}
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// Prepare performs basic validation on the AccessConfig and ensures we can sign
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// a request.
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func (c *AccessConfig) Prepare(ctx *interpolate.Context) []error {
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var errs []error
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if c.Endpoint == "" {
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// Use Joyent public cloud as the default endpoint if none is specified
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c.Endpoint = "https://us-east-1.api.joyent.com"
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}
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if c.Account == "" {
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errs = append(errs, errors.New("triton_account is required to use the triton builder"))
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}
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if c.KeyID == "" {
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errs = append(errs, errors.New("triton_key_id is required to use the triton builder"))
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}
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if c.KeyMaterial == "" {
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signer, err := c.createSSHAgentSigner()
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if err != nil {
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errs = append(errs, err)
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}
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c.signer = signer
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} else {
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signer, err := c.createPrivateKeySigner()
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if err != nil {
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errs = append(errs, err)
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}
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c.signer = signer
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}
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if len(errs) > 0 {
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return errs
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}
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return nil
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}
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func (c *AccessConfig) createSSHAgentSigner() (authentication.Signer, error) {
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signer, err := authentication.NewSSHAgentSigner(c.KeyID, c.Account)
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if err != nil {
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return nil, fmt.Errorf("Error creating Triton request signer: %s", err)
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}
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// Ensure we can sign a request
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_, err = signer.Sign("Wed, 26 Apr 2017 16:01:11 UTC")
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if err != nil {
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return nil, fmt.Errorf("Error signing test request: %s", err)
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}
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return signer, nil
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}
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func (c *AccessConfig) createPrivateKeySigner() (authentication.Signer, error) {
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var privateKeyMaterial []byte
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var err error
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// Check for keyMaterial being a file path
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if _, err = os.Stat(c.KeyMaterial); err != nil {
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privateKeyMaterial = []byte(c.KeyMaterial)
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} else {
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privateKeyMaterial, err = ioutil.ReadFile(c.KeyMaterial)
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if err != nil {
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return nil, fmt.Errorf("Error reading key material from path '%s': %s",
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c.KeyMaterial, err)
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}
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}
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// Create signer
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signer, err := authentication.NewPrivateKeySigner(c.KeyID, privateKeyMaterial, c.Account)
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if err != nil {
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return nil, fmt.Errorf("Error creating Triton request signer: %s", err)
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}
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// Ensure we can sign a request
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_, err = signer.Sign("Wed, 26 Apr 2017 16:01:11 UTC")
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if err != nil {
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return nil, fmt.Errorf("Error signing test request: %s", err)
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}
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return signer, nil
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}
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func (c *AccessConfig) CreateTritonClient() (*triton.Client, error) {
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return triton.NewClient(c.Endpoint, c.Account, c.signer)
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}
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func (c *AccessConfig) Comm() communicator.Config {
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return communicator.Config{}
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}
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