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retry.go
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retry.go
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package main
import (
"log"
"net/http"
"os"
"context"
"go.mongodb.org/atlas-sdk/v20231115008/admin"
retryablehttp "github.com/hashicorp/go-retryablehttp"
"github.com/mongodb-forks/digest"
)
/*
* MongoDB Atlas Go SDK Retryable Request Example
*
* Example using custom http client that handles rate limiting and 500 Http errors by retrying requests automatically.
* Example uses https://pkg.go.dev/github.com/hashicorp/go-retryablehttp.
* Please refer to the package documentation for more information.
*/
func main() {
ctx := context.Background()
// Values provided as part of env variables
// See: https://www.mongodb.com/docs/atlas/app-services/authentication/api-key/
apiKey := os.Getenv("MONGODB_ATLAS_PUBLIC_KEY")
apiSecret := os.Getenv("MONGODB_ATLAS_PRIVATE_KEY")
url := os.Getenv("MONGODB_ATLAS_URL")
// Using custom client
// This example relies on https://pkg.go.dev/github.com/hashicorp/go-retryablehttp
// retryablehttp performs automatic retries under certain conditions.
// Mainly, if an error is returned by the client (connection errors etc),
/// or if a 500-range response is received, then a retry is invoked.
retryClient := retryablehttp.NewClient()
retryClient.RetryMax = 3
retryableClient, err := newRetryableClient(retryClient, apiKey, apiSecret)
if err != nil{
log.Fatal("Cannot instantiate client")
}
sdk, err := admin.NewClient(
admin.UseHTTPClient(retryableClient),
admin.UseBaseURL(url),
admin.UseDebug(false))
if err != nil{
log.Fatal(err)
}
request := sdk.ProjectsApi.ListProjectsWithParams(ctx,
&admin.ListProjectsApiParams{
ItemsPerPage: admin.PtrInt(1),
IncludeCount: admin.PtrBool(true),
PageNum: admin.PtrInt(1),
})
projects, _, err := request.Execute()
if err != nil{
log.Fatal(err)
}
if projects.GetTotalCount() == 0 {
log.Fatal("account should have at least single project")
}
}
func newRetryableClient(retryClient *retryablehttp.Client, apiKey string, apiSecret string) (*http.Client, error) {
var transport http.RoundTripper = &retryablehttp.RoundTripper{Client: retryClient}
digestRetryAbleTransport := digest.NewTransportWithHTTPRoundTripper(apiKey, apiSecret,transport)
retryableClient, err := digestRetryAbleTransport.Client()
if err != nil {
return nil, err;
}
return retryableClient, nil
}