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configs.go
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configs.go
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package director
import (
"encoding/json"
"fmt"
"net/http"
gourl "net/url"
"strconv"
bosherr "github.com/cloudfoundry/bosh-utils/errors"
)
type Config struct {
ID string
Name string
Type string
CreatedAt string `json:"created_at"`
Team string
Content string
Current bool `json:"current"`
}
type ConfigsFilter struct {
Type string
Name string
}
type UpdateConfigBody struct {
Type string `json:"type"`
Name string `json:"name"`
Content string `json:"content"`
ExpectedLatestId string `json:"expected_latest_id,omitempty"`
}
type ConfigResponse struct {
LatestId string `json:"latest_id"`
ExpectedLatestId string `json:"expected_latest_id"`
}
func (d DirectorImpl) LatestConfig(configType string, name string) (Config, error) {
resps, err := d.client.latestConfig(configType, name)
if err != nil {
return Config{}, err
}
if len(resps) == 0 {
return Config{}, bosherr.Error("No config")
}
return resps[0], nil
}
func (d DirectorImpl) LatestConfigByID(configID string) (Config, error) {
return d.client.latestConfigByID(configID)
}
func (c Client) latestConfigByID(configID string) (Config, error) {
var config Config
path := fmt.Sprintf("/configs/%s", configID)
respBody, response, err := c.clientRequest.RawGet(path, nil, nil)
if err != nil {
if response != nil && response.StatusCode == http.StatusNotFound {
return config, bosherr.WrapErrorf(err, "No config")
}
return config, bosherr.WrapErrorf(err, "Finding config")
}
err = json.Unmarshal(respBody, &config)
if err != nil {
return config, bosherr.WrapError(err, "Unmarshaling Director response")
}
return config, nil
}
func (d DirectorImpl) ListConfigs(limit int, filter ConfigsFilter) ([]Config, error) {
return d.client.listConfigs(limit, filter)
}
func (d DirectorImpl) UpdateConfig(configType string, name string, expectedLatestId string, content []byte) (Config, error) {
body, err := json.Marshal(UpdateConfigBody{configType, name, string(content), expectedLatestId})
if err != nil {
return Config{}, bosherr.WrapError(err, "Can't marshal request body")
}
return d.client.updateConfig(body)
}
func (d DirectorImpl) DeleteConfig(configType string, name string) (bool, error) {
return d.client.deleteConfig(configType, name)
}
func (d DirectorImpl) DeleteConfigByID(configID string) (bool, error) {
return d.client.deleteConfigByID(configID)
}
func (c Client) latestConfig(configType string, name string) ([]Config, error) {
var resps []Config
query := gourl.Values{}
query.Add("type", configType)
query.Add("name", name)
query.Add("limit", "1")
query.Add("latest", "true")
path := fmt.Sprintf("/configs?%s", query.Encode())
err := c.clientRequest.Get(path, &resps)
if err != nil {
return resps, bosherr.WrapError(err, "Finding config")
}
return resps, nil
}
func (c Client) listConfigs(limit int, filter ConfigsFilter) ([]Config, error) {
var resps []Config
query := gourl.Values{}
if filter.Type != "" {
query.Add("type", filter.Type)
}
if filter.Name != "" {
query.Add("name", filter.Name)
}
query.Add("limit", fmt.Sprintf("%d", limit))
query.Add("latest", strconv.FormatBool(limit == 1))
path := fmt.Sprintf("/configs?%s", query.Encode())
err := c.clientRequest.Get(path, &resps)
if err != nil {
return resps, bosherr.WrapErrorf(err, "Listing configs")
}
return resps, nil
}
func (c Client) updateConfig(content []byte) (Config, error) {
var config Config
setHeaders := func(req *http.Request) {
req.Header.Add("Content-Type", "application/json")
}
respBody, resp, err := c.clientRequest.RawPost("/configs", content, setHeaders)
if err != nil {
if resp != nil && resp.StatusCode == http.StatusPreconditionFailed {
var configResp ConfigResponse
err = json.Unmarshal(respBody, &configResp)
if err != nil {
return config, bosherr.WrapErrorf(err, "Could not unmarshal response: '%s'", respBody)
}
return config, bosherr.Errorf("Config update rejected: The expected latest ID '%s' doesn't match the latest ID '%s'. This most likely means that a concurrent update of the config happened. Please try to upload again.", configResp.ExpectedLatestId, configResp.LatestId)
}
return config, bosherr.WrapErrorf(err, "Updating config")
}
err = json.Unmarshal(respBody, &config)
if err != nil {
return config, bosherr.WrapError(err, "Unmarshaling Director response")
}
return config, nil
}
func (c Client) deleteConfig(configType string, name string) (bool, error) {
query := gourl.Values{}
query.Add("type", configType)
query.Add("name", name)
path := fmt.Sprintf("/configs?%s", query.Encode())
_, response, err := c.clientRequest.RawDelete(path)
if err != nil {
if response != nil && response.StatusCode == http.StatusNotFound {
return false, nil
}
return false, bosherr.WrapErrorf(err, "Deleting config")
}
return true, nil
}
func (c Client) deleteConfigByID(configID string) (bool, error) {
path := fmt.Sprintf("/configs/%s", configID)
_, response, err := c.clientRequest.RawDelete(path)
if err != nil {
if response != nil && response.StatusCode == http.StatusNotFound {
return false, nil
}
return false, bosherr.WrapErrorf(err, "Deleting config")
}
return true, nil
}
func (d DirectorImpl) DiffConfig(configType string, name string, manifest []byte) (ConfigDiff, error) {
body, err := json.Marshal(UpdateConfigBody{configType, name, string(manifest), ""})
if err != nil {
return ConfigDiff{}, bosherr.WrapError(err, "Can't marshal request body")
}
resp, err := d.client.DiffConfig(body)
if err != nil {
return ConfigDiff{}, err
}
return NewConfigDiffWithFromId(resp.Diff, resp.From["id"]), nil
}
func (c Client) DiffConfig(manifest []byte) (ConfigDiffResponse, error) {
setHeaders := func(req *http.Request) {
req.Header.Add("Content-Type", "application/json")
}
return c.postConfigDiff("/configs/diff", manifest, setHeaders)
}