moth/points.go

129 lines
2.9 KiB
Go

package main
import (
"bufio"
"fmt"
"io/ioutil"
"log"
"os"
"strconv"
"strings"
"time"
)
type Award struct {
when time.Time
teamid string
category string
points int
}
func ParseAward(s string) (*Award, error) {
ret := Award{}
parts := strings.SplitN(s, " ", 5)
if len(parts) < 4 {
return nil, fmt.Errorf("Malformed award string")
}
whenEpoch, err := strconv.ParseInt(parts[0], 10, 64)
if (err != nil) {
return nil, fmt.Errorf("Malformed timestamp: %s", parts[0])
}
ret.when = time.Unix(whenEpoch, 0)
ret.teamid = parts[1]
ret.category = parts[2]
points, err := strconv.Atoi(parts[3])
if (err != nil) {
return nil, fmt.Errorf("Malformed points: %s", parts[3])
}
ret.points = points
return &ret, nil
}
func (a *Award) String() string {
return fmt.Sprintf("%d %s %s %d", a.when.Unix(), a.teamid, a.category, a.points)
}
func pointsLog() []Award {
var ret []Award
fn := statePath("points.log")
f, err := os.Open(fn)
if err != nil {
log.Printf("Unable to open %s: %s", fn, err)
return ret
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
line := scanner.Text()
cur, err := ParseAward(line)
if err != nil {
log.Printf("Skipping malformed award line %s: %s", line, err)
continue
}
ret = append(ret, *cur)
}
return ret
}
// awardPoints gives points points to team teamid in category category
func awardPoints(teamid string, category string, points int) error {
fn := fmt.Sprintf("%s-%s-%d", teamid, category, points)
tmpfn := statePath("points.tmp", fn)
newfn := statePath("points.new", fn)
contents := fmt.Sprintf("%d %s %s %d\n", time.Now().Unix(), teamid, points)
if err := ioutil.WriteFile(tmpfn, []byte(contents), 0644); err != nil {
return err
}
if err := os.Rename(tmpfn, newfn); err != nil {
return err
}
log.Printf("Award %s %s %d", teamid, category, points)
return nil
}
// collectPoints gathers up files in points.new/ and appends their contents to points.log,
// removing each points.new/ file as it goes.
func collectPoints() {
logf, err := os.OpenFile(statePath("points.log"), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
log.Printf("Can't append to points log: %s", err)
return
}
defer logf.Close()
files, err := ioutil.ReadDir(statePath("points.new"))
if err != nil {
log.Printf("Error reading packages: %s", err)
}
for _, f := range files {
filename := statePath("points.new", f.Name())
s, err := ioutil.ReadFile(filename)
if err != nil {
log.Printf("Can't read points file %s: %s", filename, err)
continue
}
award, err := ParseAward(string(s))
if err != nil {
log.Printf("Can't parse award file %s: %s", filename, err)
continue
}
fmt.Fprintf(logf, "%s\n", award.String())
log.Print(award.String())
logf.Sync()
if err := os.Remove(filename); err != nil {
log.Printf("Unable to remove %s: %s", filename, err)
}
}
}