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Merge pull request #2 from castai/feat/send-collected-metrics
Send collected metrics to castai mothership
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| package castai | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "compress/gzip" | ||
| "context" | ||
| "fmt" | ||
| "net/http" | ||
| "time" | ||
|
|
||
| "github.com/go-resty/resty/v2" | ||
| "github.com/sirupsen/logrus" | ||
| "google.golang.org/protobuf/proto" | ||
| "k8s.io/apimachinery/pkg/util/wait" | ||
|
|
||
| "github.com/castai/gpu-metrics-exporter/pb" | ||
| ) | ||
|
|
||
| const ( | ||
| tokenHeader = "X-API-Key" // #nosec G101 | ||
| retryCount = 5 | ||
| ) | ||
|
|
||
| var ( | ||
| backoff = wait.Backoff{ | ||
| Steps: retryCount, | ||
| Duration: 50 * time.Millisecond, | ||
| Factor: 8, | ||
| Jitter: 0.15, | ||
| } | ||
|
|
||
| contentTypeHeader = http.CanonicalHeaderKey("Content-Type") | ||
| contentType = "application/protobuf" | ||
|
|
||
| contentEncodingHeader = http.CanonicalHeaderKey("Content-Encoding") | ||
| contentEncoding = "gzip" | ||
|
|
||
| userAgentHeader = http.CanonicalHeaderKey("User-Agent") | ||
| userAgent = "castai-gpu-metrics-exporter/" | ||
| ) | ||
|
|
||
| type Config struct { | ||
| URL string | ||
| APIKey string | ||
| ClusterID string | ||
| } | ||
|
|
||
| type Client interface { | ||
| UploadBatch(ctx context.Context, batch *pb.MetricsBatch) error | ||
| } | ||
|
|
||
| type client struct { | ||
| restyClient *resty.Client | ||
| cfg Config | ||
| log logrus.FieldLogger | ||
| } | ||
|
|
||
| func NewClient(cfg Config, log logrus.FieldLogger, restyClient *resty.Client, version string) Client { | ||
| restyClient.BaseURL = cfg.URL | ||
| restyClient.SetHeaders(map[string]string{ | ||
| tokenHeader: cfg.APIKey, | ||
| contentTypeHeader: contentType, | ||
| contentEncodingHeader: contentEncoding, | ||
| userAgentHeader: fmt.Sprintf("%s%s", userAgent, version), | ||
| }) | ||
|
|
||
| return &client{ | ||
| restyClient: restyClient, | ||
| cfg: cfg, | ||
| log: log, | ||
| } | ||
| } | ||
|
|
||
| func (c client) UploadBatch(ctx context.Context, batch *pb.MetricsBatch) error { | ||
| buffer, err := c.toBuffer(batch) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return wait.ExponentialBackoffWithContext(ctx, backoff, func(ctx context.Context) (done bool, err error) { | ||
| resp, err := c.restyClient.R(). | ||
| SetContext(ctx). | ||
| SetBody(buffer). | ||
| Post(fmt.Sprintf("/v1/kubernetes/clusters/%s/gpu-metrics", c.cfg.ClusterID)) | ||
|
|
||
| if err != nil { | ||
| c.log.Errorf("error making http request %v", err) | ||
| return false, nil | ||
| } | ||
|
|
||
| statusCode := resp.StatusCode() | ||
| switch { | ||
| case statusCode >= 200 && statusCode < 300: | ||
| return true, nil | ||
| case statusCode >= 400 && statusCode < 500: | ||
| return true, fmt.Errorf("client error: %d %s", statusCode, resp.Status()) | ||
| default: | ||
| c.log.Errorf("server error or unexpected response code: %d %s", statusCode, resp.Status()) | ||
| return false, nil | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| func (c client) toBuffer(batch *pb.MetricsBatch) (*bytes.Buffer, error) { | ||
| payload := new(bytes.Buffer) | ||
|
|
||
| protoBytes, err := proto.Marshal(batch) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error marshaling batch %w", err) | ||
| } | ||
|
|
||
| writer := gzip.NewWriter(payload) | ||
| if _, err := writer.Write(protoBytes); err != nil { | ||
| return nil, fmt.Errorf("error compressing payload %w", err) | ||
| } | ||
| if err := writer.Close(); err != nil { | ||
| return nil, fmt.Errorf("error closing gzip writer %w", err) | ||
| } | ||
|
|
||
| return payload, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package castai_test | ||
|
|
||
| import ( | ||
| "context" | ||
| "net/http" | ||
| "testing" | ||
|
|
||
| "github.com/go-resty/resty/v2" | ||
| "github.com/jarcoal/httpmock" | ||
| "github.com/sirupsen/logrus" | ||
| "github.com/stretchr/testify/require" | ||
|
|
||
| "github.com/castai/gpu-metrics-exporter/internal/castai" | ||
| "github.com/castai/gpu-metrics-exporter/pb" | ||
| ) | ||
|
|
||
| func Test_UploadBatch(t *testing.T) { | ||
| log := logrus.New() | ||
| restyClient := resty.New() | ||
| client := castai.NewClient(castai.Config{ | ||
| URL: "http://localhost", | ||
| APIKey: "my-fake-token", | ||
| ClusterID: "cluster-id-1", | ||
| }, log, restyClient, "test") | ||
|
|
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| httpmock.ActivateNonDefault(restyClient.GetClient()) | ||
| t.Run("calls gpu-metrics endpoint with proper headers", func(t *testing.T) { | ||
| r := require.New(t) | ||
|
|
||
| httpmock.RegisterResponder( | ||
| "POST", | ||
| "http://localhost/v1/kubernetes/clusters/cluster-id-1/gpu-metrics", | ||
| func(req *http.Request) (*http.Response, error) { | ||
| contentType := req.Header.Get("Content-type") | ||
| r.Equal("application/protobuf", contentType) | ||
|
|
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| contentEncoding := req.Header.Get("Content-encoding") | ||
| r.Equal("gzip", contentEncoding) | ||
|
|
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| apiKey := req.Header.Get("X-API-Key") | ||
| r.Equal("my-fake-token", apiKey) | ||
|
|
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| userAgent := req.Header.Get("User-Agent") | ||
| r.Equal("castai-gpu-metrics-exporter/test", userAgent) | ||
|
|
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| return &http.Response{StatusCode: 200}, nil | ||
| }, | ||
| ) | ||
|
|
||
| _ = client.UploadBatch(context.Background(), &pb.MetricsBatch{}) | ||
| }) | ||
| } |
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