forked from Botanical/BotanJS
88 lines
1.6 KiB
Go
88 lines
1.6 KiB
Go
package closure
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import (
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"context"
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"errors"
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"log"
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"time"
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)
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func NewCompileCache(workers int) *CompileCache {
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c := &CompileCache{
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client: NewClientFromEnv(),
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states: make(map[string]CompileState),
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results: make(map[string][]byte),
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errors: make(map[string]error),
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jobs: make(chan CompileJob, 128),
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}
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for i := 0; i < workers; i++ {
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go c.worker()
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}
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return c
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}
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func (c *CompileCache) Get(hash string) ([]byte, bool) {
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c.mu.Lock()
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defer c.mu.Unlock()
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if c.states[hash] != CompileReady {
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return nil, false
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}
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return c.results[hash], true
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}
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func (c *CompileCache) Enqueue(job CompileJob) {
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c.mu.Lock()
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switch c.states[job.Hash] {
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case CompilePending, CompileReady:
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c.mu.Unlock()
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return
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}
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c.states[job.Hash] = CompilePending
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c.mu.Unlock()
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select {
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case c.jobs <- job:
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default:
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// Queue full. Don't block request path.
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c.mu.Lock()
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c.states[job.Hash] = CompileMissing
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c.errors[job.Hash] = errors.New("compile queue full")
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c.mu.Unlock()
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}
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}
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func (c *CompileCache) worker() {
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for job := range c.jobs {
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ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
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req := CompileRequest{
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ExternSources: job.ExternSources,
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JSSources: job.JSSources,
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Defines: job.Defines,
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}
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c.client.DebugPrintCurl(ctx, req)
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out, err := c.client.Compile(ctx, req)
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cancel()
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c.mu.Lock()
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if err == nil {
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c.states[job.Hash] = CompileReady
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c.results[job.Hash] = out
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delete(c.errors, job.Hash)
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} else {
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log.Printf("compile failed: %v", err)
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c.states[job.Hash] = CompileFailed
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c.errors[job.Hash] = err
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}
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c.mu.Unlock()
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}
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}
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