From 378ca56f91702a8d2315b1a298e4230a0db2fbd4 Mon Sep 17 00:00:00 2001
From: Evgenii Guguchkin <eugene.guguchkin@gmail.com>
Date: Tue, 14 Apr 2026 20:47:15 +0300
Subject: [PATCH] feat: injector utility

---
 build/package/Dockerfile |   4 +-
 cmd/inserter/main.go     | 124 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 127 insertions(+), 1 deletion(-)
 create mode 100644 cmd/inserter/main.go

diff --git a/build/package/Dockerfile b/build/package/Dockerfile
index 812a0247..efa44df3 100644
--- a/build/package/Dockerfile
+++ b/build/package/Dockerfile
@@ -22,7 +22,7 @@ RUN CGO_ENABLED=${CGO_ENABLED} go build -trimpath \
     -ldflags "-w -s  \
     -X github.com/ozontech/seq-db/buildinfo.Version=${VERSION}  \
     -X github.com/ozontech/seq-db/buildinfo.BuildTime=${BUILD_TIME}" \
-    -o seq-db ./cmd/seq-db
+    -o ./ ./cmd/...
 
 # Deploy
 FROM $APP_IMAGE
@@ -30,5 +30,7 @@ FROM $APP_IMAGE
 WORKDIR /seq-db
 
 COPY --from=build /seq-db/seq-db /seq-db/seq-db
+COPY --from=build /seq-db/unpacker /seq-db/unpacker
+COPY --from=build /seq-db/inserter /seq-db/inserter
 
 ENTRYPOINT [ "./seq-db" ]
diff --git a/cmd/inserter/main.go b/cmd/inserter/main.go
new file mode 100644
index 00000000..69cce579
--- /dev/null
+++ b/cmd/inserter/main.go
@@ -0,0 +1,124 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"time"
+)
+
+func main() {
+	address := flag.String("address", "http://localhost:9002", "Elasticsearch address")
+	file := flag.String("file", "", "Path to JSONLines file")
+	batchSize := flag.Int("batch-size", 1000, "Number of documents per batch")
+	interval := flag.Duration("interval", 0, "Time between inserting batches")
+
+	flag.Parse()
+
+	if *file == "" {
+		log.Fatal("file flag is required")
+	}
+
+	f, err := os.Open(*file)
+	if err != nil {
+		log.Fatalf("Failed to open file: %v", err)
+	}
+	defer f.Close()
+
+	scanner := bufio.NewScanner(f)
+
+	const maxCapacity = 1024 * 1024 // 1MB buffer
+	buf := make([]byte, maxCapacity)
+	scanner.Buffer(buf, maxCapacity) // Set custom buffer and max size
+
+	var batch []string
+	lineNum := 0
+
+	for scanner.Scan() {
+		lineNum++
+		line := scanner.Text()
+		if line == "" {
+			continue
+		}
+
+		// Validate JSON
+		//var doc map[string]interface{}
+		//if err := json.Unmarshal([]byte(line), &doc); err != nil {
+		//    log.Printf("Warning: skipping invalid JSON at line %d: %v", lineNum, err)
+		//    continue
+		//}
+
+		// Create index action
+		action := fmt.Sprintf(`{"index":{}}`)
+
+		batch = append(batch, action, line)
+
+		if len(batch)/2 >= *batchSize {
+			if err := sendBatch(*address, batch); err != nil {
+				log.Printf("Failed to send batch: %v", err)
+			} else {
+				log.Printf("Sent %d documents", len(batch)/2)
+			}
+			batch = nil
+
+			if *interval > 0 {
+				time.Sleep(*interval)
+			}
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		log.Printf("Error reading file: %v", err)
+	}
+
+	// Send remaining batch
+	if len(batch) > 0 {
+		if err := sendBatch(*address, batch); err != nil {
+			log.Printf("Failed to send final batch: %v", err)
+		} else {
+			log.Printf("Sent final %d documents", len(batch)/2)
+		}
+	}
+}
+
+func sendBatch(address string, batch []string) error {
+sendbatchagain:
+
+	url := address
+
+	body := bytes.NewBufferString("")
+	for _, line := range batch {
+		body.WriteString(line)
+		body.WriteString("\n")
+	}
+
+	req, err := http.NewRequest("POST", url, body)
+	if err != nil {
+		return err
+	}
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 400 {
+		if resp.StatusCode == 429 {
+			log.Printf("429 received. Retrying...")
+			time.Sleep(5 * time.Second)
+			goto sendbatchagain
+		}
+
+		var buf bytes.Buffer
+		buf.ReadFrom(resp.Body)
+		return fmt.Errorf("bulk request failed with status %d: %s", resp.StatusCode, buf.String())
+	}
+
+	return nil
+}