github.com/apex/logs v0.0.4

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:golang/github.com/apex/logs@v0.0.4
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/apex/logs@v0.0.4

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:f1a10025aeb9abfb04dc880b99715771ec0ecd1e5ad869114d9a8fec1ce23ea5","contract":["Client.AddEvents sends a POST request to /add_events with JSON-encoded AddEventsInput","Client.GetProjects sends a POST request to /get_projects and decodes GetProjectsOutput","HTTP responses with status code \u003e= 300 and application/json content type return a decoded logs.Error"],"goal":"verify pkg:golang/github.com/apex/logs@v0.0.4","kind":"HOW","packages":["pkg:golang/github.com/apex/logs@v0.0.4"],"schemaVersion":1},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/github.com/apex/logs@v0.0.4"],"schemaVersion":1,"subject":"pkg:golang/github.com/apex/logs@v0.0.4","verifierAdapter":"golang@1"}

module sample

go 1.26.6

require github.com/apex/logs v0.0.4

github.com/apex/logs v0.0.4 h1:KmEBVwfDUOTFcBO8cfkJYwdQ5487UZSN+GteOGPmiro=
github.com/apex/logs v0.0.4/go.mod h1:XzxuLZ5myVHDy9SAmYpamKKRNApGj54PfYLcFrXqDwo=
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/tj/assert v0.0.0-20171129193455-018094318fb0 h1:Rw8kxzWo1mr6FSaYXjQELRe88y2KdfynXdnK72rdjtA=
github.com/tj/assert v0.0.0-20171129193455-018094318fb0/go.mod h1:mZ9/Rh9oLWpLLDRpvE+3b7gP/C2YyLFYxNmcLnPTMe0=

{
  "schemaVersion": 1,
  "goal": "verify pkg:golang/github.com/apex/logs@v0.0.4",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/apex/logs@v0.0.4"
  ]
}

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"net/http/httptest"
	"os"

	"github.com/apex/logs/go/logs"
)

func main() {
	var receivedEvents logs.AddEventsInput

	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodPost {
			http.Error(w, "invalid method", http.StatusMethodNotAllowed)
			return
		}
		w.Header().Set("Content-Type", "application/json")

		switch r.URL.Path {
		case "/add_events":
			if err := json.NewDecoder(r.Body).Decode(&receivedEvents); err != nil {
				w.WriteHeader(http.StatusBadRequest)
				return
			}
			w.WriteHeader(http.StatusOK)
		case "/get_projects":
			_ = json.NewEncoder(w).Encode(logs.GetProjectsOutput{
				Projects: []logs.Project{
					{
						ID:          "proj-1",
						Name:        "demo-project",
						Description: "Test project",
						Retention:   30,
					},
				},
			})
		case "/get_alert":
			w.WriteHeader(http.StatusNotFound)
			_ = json.NewEncoder(w).Encode(logs.Error{
				Type:    "not_found",
				Message: "alert was not found",
			})
		default:
			w.WriteHeader(http.StatusNotFound)
		}
	}))
	defer server.Close()

	client := &logs.Client{
		URL:        server.URL,
		HTTPClient: server.Client(),
	}

	// 1. AddEvents sends POST /add_events with JSON payload
	err := client.AddEvents(logs.AddEventsInput{
		ProjectID: "proj-1",
		Events: []logs.Event{
			{
				ID:      "evt-1",
				Level:   "info",
				Message: "service started",
				Fields:  map[string]interface{}{"port": 8080},
			},
		},
	})
	if err != nil {
		fmt.Fprintf(os.Stderr, "AddEvents failed: %v\n", err)
		os.Exit(1)
	}
	if receivedEvents.ProjectID != "proj-1" || len(receivedEvents.Events) != 1 || receivedEvents.Events[0].Message != "service started" {
		fmt.Fprintf(os.Stderr, "unexpected events payload: %+v\n", receivedEvents)
		os.Exit(1)
	}

	// 2. GetProjects sends POST /get_projects and decodes GetProjectsOutput
	projectsOut, err := client.GetProjects()
	if err != nil {
		fmt.Fprintf(os.Stderr, "GetProjects failed: %v\n", err)
		os.Exit(1)
	}
	if len(projectsOut.Projects) != 1 || projectsOut.Projects[0].ID != "proj-1" || projectsOut.Projects[0].Name != "demo-project" {
		fmt.Fprintf(os.Stderr, "unexpected projects output: %+v\n", projectsOut)
		os.Exit(1)
	}

	// 3. Error responses (>= 300) with application/json decode into logs.Error
	_, err = client.GetAlert(logs.GetAlertInput{
		ProjectID: "proj-1",
		AlertID:   "missing",
	})
	if err == nil {
		fmt.Fprintln(os.Stderr, "expected error from GetAlert, got nil")
		os.Exit(1)
	}
	apiErr, ok := err.(logs.Error)
	if !ok {
		fmt.Fprintf(os.Stderr, "expected logs.Error, got %T: %v\n", err, err)
		os.Exit(1)
	}
	if apiErr.StatusCode != http.StatusNotFound || apiErr.Type != "not_found" || apiErr.Error() != "not_found: alert was not found" {
		fmt.Fprintf(os.Stderr, "unexpected logs.Error fields: %+v\n", apiErr)
		os.Exit(1)
	}
}