Begun data module

core/data/registry/processor.go

@@ -0,0 +1,34 @@
+// Package registry ...
+package registry
+
+import (
+	"fmt"
+	"sync"
+
+	"gitlab.michelsen.id/phillmichelsen/tessera/core/data"
+)
+
+type ProcessorFactory func(string) (data.Processor, error)
+
+type Processors struct {
+	mu sync.RWMutex
+	m  map[string]ProcessorFactory
+}
+
+func NewProcessors() *Processors { return &Processors{m: make(map[string]ProcessorFactory)} }
+
+func (r *Processors) Register(name string, f ProcessorFactory) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.m[name] = f
+}
+
+func (r *Processors) New(name string, params string) (data.Processor, error) {
+	r.mu.RLock()
+	f, ok := r.m[name]
+	r.mu.RUnlock()
+	if !ok {
+		return nil, fmt.Errorf("unknown processor: %s", name)
+	}
+	return f(params)
+}