CLOUDP-237245: Add example for retrying requests #294
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,74 @@ | ||
| package main | ||
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| import ( | ||
| "log" | ||
| "net/http" | ||
| "os" | ||
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| "context" | ||
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| "go.mongodb.org/atlas-sdk/v20231115008/admin" | ||
| "go.mongodb.org/atlas-sdk/v20231115008/examples" | ||
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| retryablehttp "github.com/hashicorp/go-retryablehttp" | ||
| "github.com/mongodb-forks/digest" | ||
| ) | ||
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| /* | ||
| * 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") | ||
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| // 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 | ||
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| retryableClient := createRetryableClient(retryClient, apiKey, apiSecret) | ||
| sdk, err := admin.NewClient( | ||
| admin.UseHTTPClient(retryableClient), | ||
| admin.UseBaseURL(url), | ||
| admin.UseDebug(false)) | ||
| examples.HandleErr(err, nil) | ||
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| request := sdk.ProjectsApi.ListProjectsWithParams(ctx, | ||
| &admin.ListProjectsApiParams{ | ||
| ItemsPerPage: admin.PtrInt(1), | ||
| IncludeCount: admin.PtrBool(true), | ||
| PageNum: admin.PtrInt(1), | ||
| }) | ||
| projects, response, err := request.Execute() | ||
| examples.HandleErr(err, response) | ||
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| if projects.GetTotalCount() == 0 { | ||
| log.Fatal("account should have at least single project") | ||
| } | ||
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| } | ||
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| func createRetryableClient(retryClient *retryablehttp.Client, apiKey string, apiSecret string) *http.Client { | ||
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| var transport http.RoundTripper = &retryablehttp.RoundTripper{Client: retryClient} | ||
| digestRetryAbleTransport := &digest.Transport{ | ||
| Username: apiKey, | ||
| Password: apiSecret, | ||
| Transport: transport, | ||
| } | ||
| retryableClient, err := digestRetryAbleTransport.Client() | ||
| if err != nil { | ||
| log.Fatal("Cannot instantiate client") | ||
| } | ||
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| return retryableClient | ||
| } | ||
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| package main | ||
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| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
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| "go.mongodb.org/atlas-sdk/v20231115008/admin" | ||
| ) | ||
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| func main() { | ||
| var num int = 0 | ||
| myStruct := admin.DiskBackupSnapshotSchedule{ | ||
| ReferenceHourOfDay:&num, | ||
| } | ||
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| // Print the struct before encoding to JSON | ||
| fmt.Println("Before encoding:", myStruct) | ||
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| // Encode struct to JSON | ||
| encoded, err := json.Marshal(myStruct) | ||
| if err != nil { | ||
| fmt.Println("Error encoding JSON:", err) | ||
| return | ||
| } | ||
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| // Print the encoded JSON | ||
| fmt.Println("Encoded JSON:", string(encoded)) | ||
| } |
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@wtrocki @gssbzn note that for instance cluster creation can throw 500 but still created the cluster so next call will be DUPLICATE_CLUSTER_NAME 400 that will be a bit confusing for clients.
retries are mostly useful when operations are atomic (happen completely or don't happen at all)
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yes, personally blindly retrying on the Atlas API is not safe and a bad idea