From 27e3b122e8498ac905aba660117d22705bd15667 Mon Sep 17 00:00:00 2001 From: Vaishnav88sk Date: Sun, 29 Jun 2025 19:02:24 +0530 Subject: [PATCH 1/2] claritty-agent-client binary added --- .gitignore | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/.gitignore b/.gitignore index 7c965d0..0e4271c 100644 --- a/.gitignore +++ b/.gitignore @@ -1,4 +1,5 @@ .git/ backend/claritty-backend backend/metrics.db -claritty-agent/claritty-agent \ No newline at end of file +claritty-agent/claritty-agent +claritty-agent-client/claritty-agent-client \ No newline at end of file From 55ca47d4d7ffd783f2d9d0169c8bb53406cac13b Mon Sep 17 00:00:00 2001 From: Vaishnav88sk Date: Sun, 29 Jun 2025 19:03:12 +0530 Subject: [PATCH 2/2] claritty-agent-client files added using client-go and metric-server --- claritty-agent-client/Dockerfile | 8 + claritty-agent-client/config/config.go | 25 +++ claritty-agent-client/go.mod | 47 ++++++ claritty-agent-client/go.sum | 157 +++++++++++++++++++ claritty-agent-client/kube/client.go | 18 +++ claritty-agent-client/kube/metrics_client.go | 18 +++ claritty-agent-client/logs/collector.go | 21 +++ claritty-agent-client/main.go | 28 ++++ claritty-agent-client/metrics/collector.go | 80 ++++++++++ claritty-agent-client/sender/sender.go | 48 ++++++ claritty-agent-client/types/types.go | 12 ++ 11 files changed, 462 insertions(+) create mode 100644 claritty-agent-client/Dockerfile create mode 100644 claritty-agent-client/config/config.go create mode 100644 claritty-agent-client/go.mod create mode 100644 claritty-agent-client/go.sum create mode 100644 claritty-agent-client/kube/client.go create mode 100644 claritty-agent-client/kube/metrics_client.go create mode 100644 claritty-agent-client/logs/collector.go create mode 100644 claritty-agent-client/main.go create mode 100644 claritty-agent-client/metrics/collector.go create mode 100644 claritty-agent-client/sender/sender.go create mode 100644 claritty-agent-client/types/types.go diff --git a/claritty-agent-client/Dockerfile b/claritty-agent-client/Dockerfile new file mode 100644 index 0000000..99fa737 --- /dev/null +++ b/claritty-agent-client/Dockerfile @@ -0,0 +1,8 @@ +FROM golang:1.24.3 AS builder +WORKDIR /app +COPY . . +RUN go mod tidy && go build -o claritty-agent-client main.go + +FROM debian:bookworm-slim +COPY --from=builder /app/claritty-agent-client /usr/local/bin/claritty-agent-client +ENTRYPOINT ["/usr/local/bin/claritty-agent-client"] diff --git a/claritty-agent-client/config/config.go b/claritty-agent-client/config/config.go new file mode 100644 index 0000000..8652781 --- /dev/null +++ b/claritty-agent-client/config/config.go @@ -0,0 +1,25 @@ +package config + +import ( + "os" + "time" +) + +type Config struct { + BackendURL string + Interval time.Duration +} + +func LoadConfig() Config { + backendURL := os.Getenv("BACKEND_URL") + if backendURL == "" { + backendURL = "http://localhost:8088" // fallback default + } + + return Config{ + // BackendURL: "http://backend.default.svc.cluster.local:8088", + // BackendURL: "http://localhost:8088", // for local testing + BackendURL: backendURL, // ec2 hosted backend + Interval: 10 * time.Second, + } +} diff --git a/claritty-agent-client/go.mod b/claritty-agent-client/go.mod new file mode 100644 index 0000000..fc82d8a --- /dev/null +++ b/claritty-agent-client/go.mod @@ -0,0 +1,47 @@ +module github.com/Vaishnav88sk/claritty/claritty-agent-client + +go 1.24.3 + +require ( + k8s.io/apimachinery v0.33.2 + k8s.io/client-go v0.29.1 + k8s.io/metrics v0.29.1 +) + +require ( + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/emicklei/go-restful/v3 v3.11.0 // indirect + github.com/fxamacker/cbor/v2 v2.7.0 // indirect + github.com/go-logr/logr v1.4.2 // indirect + github.com/go-openapi/jsonpointer v0.21.0 // indirect + github.com/go-openapi/jsonreference v0.20.2 // indirect + github.com/go-openapi/swag v0.23.0 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/protobuf v1.5.3 // indirect + github.com/google/gnostic-models v0.6.9 // indirect + github.com/google/uuid v1.6.0 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/x448/float16 v0.8.4 // indirect + golang.org/x/net v0.38.0 // indirect + golang.org/x/oauth2 v0.27.0 // indirect + golang.org/x/sys v0.31.0 // indirect + golang.org/x/term v0.30.0 // indirect + golang.org/x/text v0.23.0 // indirect + golang.org/x/time v0.9.0 // indirect + google.golang.org/protobuf v1.36.5 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect + k8s.io/api v0.29.1 // indirect + k8s.io/klog/v2 v2.130.1 // indirect + k8s.io/kube-openapi v0.0.0-20250318190949-c8a335a9a2ff // indirect + k8s.io/utils v0.0.0-20241104100929-3ea5e8cea738 // indirect + sigs.k8s.io/json v0.0.0-20241010143419-9aa6b5e7a4b3 // indirect + sigs.k8s.io/randfill v1.0.0 // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.6.0 // indirect + sigs.k8s.io/yaml v1.4.0 // indirect +) diff --git a/claritty-agent-client/go.sum b/claritty-agent-client/go.sum new file mode 100644 index 0000000..4b5ce78 --- /dev/null +++ b/claritty-agent-client/go.sum @@ -0,0 +1,157 @@ +github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g= +github.com/emicklei/go-restful/v3 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+sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY= diff --git a/claritty-agent-client/kube/client.go b/claritty-agent-client/kube/client.go new file mode 100644 index 0000000..36e69b6 --- /dev/null +++ b/claritty-agent-client/kube/client.go @@ -0,0 +1,18 @@ +package kube + +import ( + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/rest" +) + +func GetClient() *kubernetes.Clientset { + config, err := rest.InClusterConfig() + if err != nil { + panic(err.Error()) + } + clientset, err := kubernetes.NewForConfig(config) + if err != nil { + panic(err.Error()) + } + return clientset +} diff --git a/claritty-agent-client/kube/metrics_client.go b/claritty-agent-client/kube/metrics_client.go new file mode 100644 index 0000000..3b758dc --- /dev/null +++ b/claritty-agent-client/kube/metrics_client.go @@ -0,0 +1,18 @@ +package kube + +import ( + "k8s.io/client-go/rest" + metrics "k8s.io/metrics/pkg/client/clientset/versioned" +) + +func GetMetricsClient() *metrics.Clientset { + config, err := rest.InClusterConfig() + if err != nil { + panic(err.Error()) + } + metricsClient, err := metrics.NewForConfig(config) + if err != nil { + panic(err.Error()) + } + return metricsClient +} diff --git a/claritty-agent-client/logs/collector.go b/claritty-agent-client/logs/collector.go new file mode 100644 index 0000000..ec0e113 --- /dev/null +++ b/claritty-agent-client/logs/collector.go @@ -0,0 +1,21 @@ +package logs + +import ( + "github.com/Vaishnav88sk/claritty/claritty-agent-client/types" + "os" +) + +func CollectLogs() []types.Log { + logs := []types.Log{} + files, _ := os.ReadDir("/var/log/containers/") + for _, f := range files { + data, err := os.ReadFile("/var/log/containers/" + f.Name()) + if err == nil { + logs = append(logs, types.Log{ + Pod: f.Name(), + Text: string(data), + }) + } + } + return logs +} diff --git a/claritty-agent-client/main.go b/claritty-agent-client/main.go new file mode 100644 index 0000000..f7e74c4 --- /dev/null +++ b/claritty-agent-client/main.go @@ -0,0 +1,28 @@ +package main + +import ( + // "fmt" + "github.com/Vaishnav88sk/claritty/claritty-agent-client/config" + "github.com/Vaishnav88sk/claritty/claritty-agent-client/logs" + "github.com/Vaishnav88sk/claritty/claritty-agent-client/metrics" + "github.com/Vaishnav88sk/claritty/claritty-agent-client/sender" + "time" +) + +func main() { + cfg := config.LoadConfig() + + for { + // fmt.Println("Hello") -- for testing -- prints 'hello' after every 10 secs + // 1. Collect metrics + nodeMetrics := metrics.CollectNodeMetrics() + + // 2. Collect logs + containerLogs := logs.CollectLogs() + + // 3. Send to backend + sender.SendData(cfg.BackendURL, nodeMetrics, containerLogs) + + time.Sleep(cfg.Interval) + } +} diff --git a/claritty-agent-client/metrics/collector.go b/claritty-agent-client/metrics/collector.go new file mode 100644 index 0000000..6e90ccb --- /dev/null +++ b/claritty-agent-client/metrics/collector.go @@ -0,0 +1,80 @@ +// Updated metrics/collector.go using client-go for node info +package metrics + +import ( + "context" + "log" + "os" + "strconv" + // "strings" + "time" + + "github.com/Vaishnav88sk/claritty/claritty-agent-client/types" + // "github.com/Vaishnav88sk/claritty/claritty-agent-client/kube" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/rest" + metricsapi "k8s.io/metrics/pkg/client/clientset/versioned" +) + +func CollectNodeMetrics() types.Metrics { + // Load in-cluster config + rc, err := rest.InClusterConfig() + if err != nil { + log.Println("InClusterConfig error:", err) + return types.Metrics{} + } + + // clientset, err := kubernetes.NewForConfig(rc) + clientset, err := kubernetes.NewForConfig(rc) + _ = clientset // suppress unused warning for now + if err != nil { + log.Println("Kubernetes client error:", err) + return types.Metrics{} + } + + metricsClient, err := metricsapi.NewForConfig(rc) + if err != nil { + log.Println("Metrics client error:", err) + return types.Metrics{} + } + + hostname, err := os.Hostname() + if err != nil { + log.Println("Hostname fetch error:", err) + return types.Metrics{} + } + + ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) + defer cancel() + + nodeMetrics, err := metricsClient.MetricsV1beta1().NodeMetricses().Get(ctx, hostname, metav1.GetOptions{}) + if err != nil { + log.Println("Node metrics error:", err) + return types.Metrics{} + } + + // cpuNanoStr := nodeMetrics.Usage.Cpu().AsDec().String() + // memBytes := nodeMetrics.Usage.Memory().Value() + + // cpuFloat := 0.0 + // if strings.Contains(cpuNanoStr, "n") { + // clean := strings.TrimSuffix(cpuNanoStr, "n") + // if val, err := strconv.ParseFloat(clean, 64); err == nil { + // cpuFloat = val / 1e9 + // } + // } + cpuFloat, err := strconv.ParseFloat(nodeMetrics.Usage.Cpu().AsDec().String(), 64) + if err != nil { + log.Println("Failed to parse CPU:", err) + cpuFloat = 0 + } + + memBytes := nodeMetrics.Usage.Memory().Value() + + return types.Metrics{ + CPU: cpuFloat, + Memory: int(memBytes / 1024 / 1024), + Node: hostname, + } +} diff --git a/claritty-agent-client/sender/sender.go b/claritty-agent-client/sender/sender.go new file mode 100644 index 0000000..eac85c0 --- /dev/null +++ b/claritty-agent-client/sender/sender.go @@ -0,0 +1,48 @@ +package sender + +import ( + "bytes" + "encoding/json" + "github.com/Vaishnav88sk/claritty/claritty-agent-client/types" + "net/http" +) + +// type Payload struct { +// Metrics types.Metrics +// Logs []types.Log +// } + +type Payload struct { + Node string `json:"node"` + CPU float64 `json:"cpu"` + Memory int `json:"memory"` + Logs []string `json:"logs"` +} + +// func SendData(url string, m types.Metrics, l []types.Log) { +// payload := Payload{Metrics: m, Logs: l} +// jsonData, _ := json.Marshal(payload) +// http.Post(url, "application/json", bytes.NewBuffer(jsonData)) +// } + +func SendData(url string, m types.Metrics, l []types.Log) { + logs := []string{} + for _, log := range l { + logs = append(logs, log.Text) + } + + payload := Payload{ + Node: m.Node, + CPU: m.CPU, + Memory: m.Memory, + Logs: logs, + } + + jsonData, _ := json.Marshal(payload) + resp, err := http.Post(url+"/api/metrics", "application/json", bytes.NewBuffer(jsonData)) + if err != nil { + println("Error sending:", err.Error()) + } else { + println("Sent metrics to backend, status:", resp.Status) + } +} diff --git a/claritty-agent-client/types/types.go b/claritty-agent-client/types/types.go new file mode 100644 index 0000000..5b168ef --- /dev/null +++ b/claritty-agent-client/types/types.go @@ -0,0 +1,12 @@ +package types + +type Metrics struct { + CPU float64 `json:"cpu"` // cores + Memory int `json:"memory"` // MB + Node string `json:"node"` +} + +type Log struct { + Pod string `json:"pod"` + Text string `json:"text"` +}