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single_workspace.go
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/
single_workspace.go
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package backendconfig
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"sync"
"time"
"github.com/cenkalti/backoff"
"github.com/rudderlabs/rudder-server/config"
"github.com/rudderlabs/rudder-server/services/controlplane/identity"
"github.com/rudderlabs/rudder-server/utils/types"
)
type singleWorkspaceConfig struct {
token string
configBackendURL *url.URL
configJSONPath string
configEnvHandler types.ConfigEnvI
region string
workspaceIDOnce sync.Once
workspaceID string
}
func (wc *singleWorkspaceConfig) SetUp() error {
if configFromFile {
if wc.configJSONPath == "" {
return fmt.Errorf("valid configJSONPath is required when configFromFile is set to true")
}
return nil
}
if wc.token == "" {
wc.token = config.GetWorkspaceToken()
}
if wc.token == "" {
return fmt.Errorf("single workspace: empty workspace config token")
}
return nil
}
func (wc *singleWorkspaceConfig) AccessToken() string {
return wc.token
}
// Get returns sources from the workspace
func (wc *singleWorkspaceConfig) Get(ctx context.Context, workspace string) (map[string]ConfigT, error) {
if configFromFile {
return wc.getFromFile()
} else {
return wc.getFromAPI(ctx, workspace)
}
}
// getFromApi gets the workspace config from api
func (wc *singleWorkspaceConfig) getFromAPI(ctx context.Context, _ string) (map[string]ConfigT, error) {
config := make(map[string]ConfigT)
if wc.configBackendURL == nil {
return config, fmt.Errorf("single workspace: config backend url is nil")
}
var (
respBody []byte
u = fmt.Sprintf("%s/workspaceConfig?fetchAll=true", wc.configBackendURL)
)
operation := func() error {
var fetchError error
respBody, fetchError = wc.makeHTTPRequest(ctx, u)
return fetchError
}
backoffWithMaxRetry := backoff.WithContext(backoff.WithMaxRetries(backoff.NewExponentialBackOff(), 3), ctx)
err := backoff.RetryNotify(operation, backoffWithMaxRetry, func(err error, t time.Duration) {
pkgLogger.Warnf("Failed to fetch config from API with error: %v, retrying after %v", err, t)
})
if err != nil {
if ctx.Err() == nil {
pkgLogger.Errorf("Error sending request to the server: %v", err)
}
return config, err
}
configEnvHandler := wc.configEnvHandler
if configEnvReplacementEnabled && configEnvHandler != nil {
respBody = configEnvHandler.ReplaceConfigWithEnvVariables(respBody)
}
var sourcesJSON ConfigT
err = json.Unmarshal(respBody, &sourcesJSON)
if err != nil {
pkgLogger.Errorf("Error while parsing request: %v", err)
return config, err
}
workspaceID := sourcesJSON.WorkspaceID
wc.workspaceIDOnce.Do(func() {
wc.workspaceID = workspaceID
})
config[workspaceID] = sourcesJSON
return config, nil
}
// getFromFile reads the workspace config from JSON file
func (wc *singleWorkspaceConfig) getFromFile() (map[string]ConfigT, error) {
pkgLogger.Debug("Reading workspace config from JSON file")
config := make(map[string]ConfigT)
data, err := IoUtil.ReadFile(wc.configJSONPath)
if err != nil {
pkgLogger.Errorf("Unable to read backend config from file: %s with error : %s", wc.configJSONPath, err.Error())
return config, err
}
var configJSON ConfigT
if err = json.Unmarshal(data, &configJSON); err != nil {
pkgLogger.Errorf("Unable to parse backend config from file: %s", wc.configJSONPath)
return config, err
}
workspaceID := configJSON.WorkspaceID
wc.workspaceIDOnce.Do(func() {
pkgLogger.Info("Read workspace config from JSON file")
wc.workspaceID = workspaceID
})
config[workspaceID] = configJSON
return config, nil
}
func (wc *singleWorkspaceConfig) makeHTTPRequest(ctx context.Context, url string) ([]byte, error) {
req, err := http.NewRequestWithContext(ctx, "GET", url, http.NoBody)
if err != nil {
return nil, err
}
req.SetBasicAuth(wc.token, "")
req.Header.Set("Content-Type", "application/json")
if wc.region != "" {
q := req.URL.Query()
q.Add("region", wc.region)
req.URL.RawQuery = q.Encode()
}
client := &http.Client{Timeout: config.GetDuration("HttpClient.backendConfig.timeout", 30, time.Second)}
resp, err := client.Do(req)
if err != nil {
return nil, err
}
respBody, err := io.ReadAll(resp.Body)
if err != nil {
return nil, err
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode >= 300 {
return nil, getNotOKError(respBody, resp.StatusCode)
}
return respBody, nil
}
func (wc *singleWorkspaceConfig) Identity() identity.Identifier {
return &identity.Workspace{
WorkspaceID: wc.workspaceID,
WorkspaceToken: wc.token,
}
}