Method Load

src/go/plugin/framework/chartengine/engine.go:51–85

Load compiles and publishes a new immutable program revision.

(spec *charttpl.Spec, revision uint64)

// Load compiles and publishes a new immutable program revision.
func (e *Engine) Load(spec *charttpl.Spec, revision uint64) error {
	if e == nil {
		return fmt.Errorf("chartengine: nil engine")
	}

	compiled, err := Compile(spec, revision)
	if err != nil {
		e.logWarningf("chartengine load failed revision=%d: %v", revision, err)
		return err
	}

	e.mu.RLock()
	cfg := e.state.cfg
	e.mu.RUnlock()

	autogenPolicy, selectorPolicy, err := resolveEffectivePolicy(cfg, spec.Engine)
	if err != nil {
		e.logWarningf("chartengine load failed revision=%d: %v", revision, err)
		return err
	}

	e.mu.Lock()
	e.state.cfg.autogen = autogenPolicy
	e.state.cfg.selector = selectorPolicy
	e.state.program = compiled
	e.state.matchIndex = buildMatchIndex(compiled.Charts())
	// Template revision change resets routing/materialization internals.
	e.state.routeCache = newRouteCache()
	e.state.materialized = newMaterializedState()
	e.state.engineEpoch++
	e.state.outstanding = 0
	e.mu.Unlock()
	e.logInfof("chartengine program loaded revision=%d charts=%d metrics=%d", revision, len(compiled.Charts()), len(compiled.MetricNames()))
	return nil
}

// LoadYAML decodes chart-template YAML, compiles it, and publishes the program.
func (e *Engine) LoadYAML(data []byte, revision uint64) error {