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// Copyright (c) 2015-2025 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package madmin
import (
"context"
"crypto/rsa"
"encoding/json"
"io"
"net/http"
"github.com/minio/madmin-go/v3/estream"
)
//go:generate msgp $GOFILE
//msgp:replace TraceType with:uint64
// ServiceTelemetryOpts is a request to add following types to tracing.
type ServiceTelemetryOpts struct {
// Types to add to tracing.
Types TraceType `json:"types"`
// Public cert to encrypt stream.
PubCert []byte
// Sample rate to set for this filter.
// If <=0 or >=1 no sampling will be performed
// and all hits will be traced.
SampleRate float64 `json:"sampleRate"`
// Disable sampling and only do tracing when a trace id is set on incoming request.
ParentOnly bool `json:"parentOnly"`
// Tag adds a `custom.tag` field to all traces triggered by this.
TagKV map[string]string `json:"tags"`
// On incoming HTTP types, only trigger if substring is in request.
HTTPFilter struct {
Func string `json:"funcFilter"`
UserAgent string `json:"userAgent"`
Header map[string]string `json:"header"`
} `json:"httpFilter"`
}
//msgp:ignore ServiceTelemetry
// ServiceTelemetry holds http telemetry spans, serialized and compressed.
type ServiceTelemetry struct {
SpanMZ []byte // Serialized and Compressed spans.
Err error // Any error that occurred
}
// ServiceTelemetryStream - gets raw stream for service telemetry.
func (adm AdminClient) ServiceTelemetryStream(ctx context.Context, opts ServiceTelemetryOpts) (io.ReadCloser, error) {
bopts, err := json.Marshal(opts)
if err != nil {
return nil, err
}
reqData := requestData{
relPath: adminAPIPrefix + "/telemetry",
content: bopts,
}
// Execute GET to call trace handler
resp, err := adm.executeMethod(ctx, http.MethodPost, reqData)
if err != nil {
return nil, err
}
if resp.StatusCode != http.StatusOK {
closeResponse(resp)
return nil, httpRespToErrorResponse(resp)
}
return resp.Body, nil
}
// ServiceTelemetry - perform trace request and return individual packages.
// If options contains a public key the private key must be provided.
// If context is canceled the function will return.
func (adm AdminClient) ServiceTelemetry(ctx context.Context, opts ServiceTelemetryOpts, dst chan<- ServiceTelemetry, pk *rsa.PrivateKey) {
defer close(dst)
resp, err := adm.ServiceTelemetryStream(ctx, opts)
if err != nil {
dst <- ServiceTelemetry{Err: err}
return
}
dec, err := estream.NewReader(resp)
if err != nil {
dst <- ServiceTelemetry{Err: err}
return
}
if pk != nil {
dec.SetPrivateKey(pk)
}
for {
st, err := dec.NextStream()
if err != nil {
dst <- ServiceTelemetry{Err: err}
return
}
if ctx.Err() != nil {
return
}
block, err := io.ReadAll(st)
if err == nil && len(block) == 0 {
// Ignore 0 sized blocks.
continue
}
if ctx.Err() != nil {
return
}
select {
case <-ctx.Done():
return
case dst <- ServiceTelemetry{SpanMZ: block, Err: err}:
if err != nil {
return
}
}
}
}
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