/
collector.go
124 lines (104 loc) · 3.07 KB
/
collector.go
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package pgopher
import (
"bytes"
"context"
"fmt"
"io"
"log/slog"
"net/http"
"os"
"path/filepath"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/service/s3"
core "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
)
type profileCollector struct {
ctx context.Context
logger slog.Logger
target ProfilingTarget
sink Sink
s3Client *s3.Client
kubeClient *kubernetes.Clientset
}
func (p profileCollector) Run() {
p.logger.Info("collecting profile")
url := fmt.Sprintf("%s?seconds=%d", p.target.URL, int(p.target.Duration.Seconds()))
req, err := http.NewRequestWithContext(p.ctx, http.MethodGet, url, nil)
if err != nil {
p.logger.Error("failed to create http request", slog.String("err", err.Error()))
return
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
p.logger.Error("failed to collect profile", slog.String("err", err.Error()))
return
}
defer resp.Body.Close()
buf := &bytes.Buffer{}
_, err = io.Copy(buf, resp.Body)
if err != nil {
p.logger.Error("failed to read body", slog.String("err", err.Error()))
return
}
switch p.sink.Type {
case "file":
filePath := filepath.Join(p.sink.FileSinkOptions.Folder, fmt.Sprintf("%s.pgo", p.target.Name))
file, err := os.Create(filePath)
if err != nil {
p.logger.Error("failed to create file for sink", slog.String("err", err.Error()))
return
}
defer file.Close()
_, err = file.Write(buf.Bytes())
if err != nil {
p.logger.Error("failed to write to file sink", slog.String("err", err.Error()), slog.String("file", file.Name()))
return
}
case "s3":
_, err = p.s3Client.PutObject(p.ctx, &s3.PutObjectInput{
Bucket: aws.String(p.sink.S3SinkOptions.Bucket),
Key: aws.String(fmt.Sprintf("profile=%s/%s.pgo", p.target.Name, p.target.Name)),
Body: buf,
})
if err != nil {
p.logger.Error("failed to write to s3 sink", slog.String("err", err.Error()), slog.String("bucket", p.sink.S3SinkOptions.Bucket))
return
}
case "kubernetes":
name := fmt.Sprintf("pgopher-profile-%s", p.target.Name)
client := p.kubeClient.CoreV1().Secrets(p.sink.KubernetesSinkOptions.Namespace)
secret := core.Secret{
ObjectMeta: meta.ObjectMeta{
Name: name,
Namespace: p.sink.KubernetesSinkOptions.Namespace,
},
StringData: make(map[string]string),
}
secret.StringData["profile"] = buf.String()
_, err := client.Get(p.ctx, name, meta.GetOptions{})
if err != nil {
if errors.IsNotFound(err) {
_, err := client.Create(p.ctx, &secret, meta.CreateOptions{})
if err != nil {
slog.Error("failed to create secret", slog.String("err", err.Error()))
return
}
return
} else {
slog.Error("failed to get secret", slog.String("err", err.Error()))
return
}
}
_, err = client.Update(p.ctx, &secret, meta.UpdateOptions{})
if err != nil {
slog.Error("failed to update secret", slog.String("err", err.Error()))
return
}
default:
p.logger.Error("unknown sink", slog.String("sink", p.sink.Type))
return
}
}