sneak
c152ddd5f4
check / check (push) Waiting to run
Takes .golangci.yml, .dockerignore, .gitignore, .editorconfig, the workflow and REPO_POLICIES.md from sneak/prompts dd4027b, keeping this repository's own entries after the shared content. Lint (golangci-lint v2.14.0) and test become Dockerfile phases that script/lint and script/test build alone and uncached; the image build depends on both, and script/cibuild bootstraps, runs script/check, then builds the image. The agent guidance file moves to AGENTS.md. The Go code is fixed for what the new configuration finds; reads that iterate rows now also report an iteration error. Model: opus-5-5
113 lines
2.3 KiB
Go
113 lines
2.3 KiB
Go
// Package main generates the embedded AS info data for the asinfo package
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package main
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import (
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"context"
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"encoding/csv"
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"encoding/json"
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"errors"
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"io"
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"log"
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"net/http"
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"os"
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"strconv"
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"strings"
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)
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const asCsvURL = "https://github.com/ipverse/asn-info/raw/refs/heads/master/as.csv"
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// ASInfo represents information about an Autonomous System
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type ASInfo struct {
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ASN int `json:"asn"`
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Handle string `json:"handle"`
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Description string `json:"description"`
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}
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func main() {
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// Configure logger to write to stderr
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log.SetOutput(os.Stderr)
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// Fetch the CSV data
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log.Println("Fetching AS CSV data...")
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req, err := http.NewRequestWithContext(
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context.Background(), http.MethodGet, asCsvURL, nil)
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if err != nil {
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log.Fatalf("Failed to fetch CSV: %v", err)
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}
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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log.Fatalf("Failed to fetch CSV: %v", err)
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}
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if resp.StatusCode != http.StatusOK {
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log.Fatalf("Failed to fetch CSV: HTTP %d", resp.StatusCode)
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}
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// Parse CSV
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reader := csv.NewReader(resp.Body)
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// Read header
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header, err := reader.Read()
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if err != nil {
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log.Fatalf("Failed to read CSV header: %v", err)
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}
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if len(header) != 3 || header[0] != "asn" || header[1] != "handle" ||
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header[2] != "description" {
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log.Fatalf("Unexpected CSV header: %v", header)
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}
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// Read all records
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var asInfos []ASInfo
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for {
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record, err := reader.Read()
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if errors.Is(err, io.EOF) {
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break
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}
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if err != nil {
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log.Printf("Error reading CSV record: %v", err)
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continue
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}
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const expectedFields = 3
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if len(record) != expectedFields {
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log.Printf("Skipping invalid record: %v", record)
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continue
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}
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asn, err := strconv.Atoi(record[0])
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if err != nil {
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log.Printf("Invalid ASN %q: %v", record[0], err)
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continue
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}
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asInfos = append(asInfos, ASInfo{
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ASN: asn,
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Handle: strings.TrimSpace(record[1]),
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Description: strings.TrimSpace(record[2]),
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})
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}
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// Closed here rather than deferred: log.Fatalf exits without running
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// deferred calls.
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_ = resp.Body.Close()
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log.Printf("Parsed %d AS records", len(asInfos))
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// Convert to JSON and output to stdout
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encoder := json.NewEncoder(os.Stdout)
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encoder.SetIndent("", "\t")
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err = encoder.Encode(asInfos)
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if err != nil {
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log.Fatalf("Failed to encode JSON: %v", err)
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}
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}
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