Files
antidrift/internal/aw/aw.go
T

125 lines
3.5 KiB
Go

// Package aw is a thin ActivityWatch REST client: it creates buckets and reads
// and writes events. It holds no Keel concepts, so it stays a leaf package.
package aw
import (
"bytes"
"context"
"encoding/json"
"fmt"
"net/http"
"os"
"strings"
"time"
)
// Event is one ActivityWatch event. Duration is seconds; for Keel's discrete
// derived events it is 0.
type Event struct {
Timestamp time.Time
Duration float64
Data map[string]any
}
// Client talks to an aw-server over its /api/0 REST surface.
type Client struct {
baseURL string
hc *http.Client
}
// New builds a client for the given base URL (e.g. http://localhost:5600).
func New(baseURL string) *Client {
return &Client{
baseURL: strings.TrimRight(baseURL, "/"),
hc: &http.Client{Timeout: 5 * time.Second},
}
}
// EnsureBucket creates the bucket if absent. It is idempotent: an already-exists
// response (304) is success.
func (c *Client) EnsureBucket(ctx context.Context, id, eventType, client string) error {
body, _ := json.Marshal(map[string]string{
"client": client,
"type": eventType,
"hostname": hostname(),
})
req, err := http.NewRequestWithContext(ctx, http.MethodPost,
c.baseURL+"/api/0/buckets/"+id, bytes.NewReader(body))
if err != nil {
return err
}
req.Header.Set("Content-Type", "application/json")
resp, err := c.hc.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusOK, http.StatusCreated, http.StatusNoContent, http.StatusNotModified:
return nil
default:
return fmt.Errorf("aw: create bucket %s: status %d", id, resp.StatusCode)
}
}
func hostname() string {
if h, err := os.Hostname(); err == nil && h != "" {
return h
}
return "keel"
}
type eventJSON struct {
Timestamp time.Time `json:"timestamp"`
Duration float64 `json:"duration"`
Data map[string]any `json:"data"`
}
// Insert posts a single event to the bucket. The AW events endpoint takes a
// JSON array, so the event is wrapped in a one-element list.
func (c *Client) Insert(ctx context.Context, bucketID string, e Event) error {
body, _ := json.Marshal([]eventJSON{{Timestamp: e.Timestamp, Duration: e.Duration, Data: e.Data}})
req, err := http.NewRequestWithContext(ctx, http.MethodPost,
c.baseURL+"/api/0/buckets/"+bucketID+"/events", bytes.NewReader(body))
if err != nil {
return err
}
req.Header.Set("Content-Type", "application/json")
resp, err := c.hc.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
return fmt.Errorf("aw: insert into %s: status %d", bucketID, resp.StatusCode)
}
return nil
}
// Recent returns up to limit events from the bucket, newest first (the AW
// default ordering for the events endpoint).
func (c *Client) Recent(ctx context.Context, bucketID string, limit int) ([]Event, error) {
endpoint := fmt.Sprintf("%s/api/0/buckets/%s/events?limit=%d", c.baseURL, bucketID, limit)
req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint, nil)
if err != nil {
return nil, err
}
resp, err := c.hc.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
return nil, fmt.Errorf("aw: read %s: status %d", bucketID, resp.StatusCode)
}
var raw []eventJSON
if err := json.NewDecoder(resp.Body).Decode(&raw); err != nil {
return nil, err
}
out := make([]Event, len(raw))
for i, e := range raw {
out[i] = Event{Timestamp: e.Timestamp, Duration: e.Duration, Data: e.Data}
}
return out, nil
}