103 lines
3.2 KiB
Go
103 lines
3.2 KiB
Go
package runtime
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import (
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"encoding/json"
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"fmt"
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"git.novox.be/novox/mesh-sdk/go/buscalls"
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)
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// BusState answers a bundle's calls on its module's bus state in the new form (mesh-sdk buscalls; novox/hq ADR 0595
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// §9, design 25 § 12.5; issue 1966): each as the module whose bundle asks, never a module the request names, so a
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// bundle reaches its own module's bindings alone.
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func (b *moduleBus) BusState(method string, params json.RawMessage) (json.RawMessage, error) {
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conn := b.all.conn
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var answer any
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var err error
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switch method {
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case buscalls.ObjectsPut:
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var r buscalls.ObjectsPutRequest
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if err = decode(method, params, &r); err == nil {
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answer, err = conn.ObjectsPut(b.module, r)
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}
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case buscalls.ObjectsGet:
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var r buscalls.ObjectsNameRequest
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if err = decode(method, params, &r); err == nil {
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var got *buscalls.ObjectData
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if got, err = conn.ObjectsGet(b.module, r); err == nil && got == nil {
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return json.RawMessage("null"), nil
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}
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answer = got
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}
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case buscalls.ObjectsDelete:
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var r buscalls.ObjectsNameRequest
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if err = decode(method, params, &r); err == nil {
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err = conn.ObjectsDelete(b.module, r)
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answer = buscalls.Done{}
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}
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case buscalls.ObjectsList:
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var r buscalls.ObjectsRequest
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if err = decode(method, params, &r); err == nil {
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answer, err = conn.ObjectsList(b.module, r)
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}
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case buscalls.ObjectsInfo:
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var r buscalls.ObjectsRequest
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if err = decode(method, params, &r); err == nil {
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answer, err = conn.ObjectsInfo(b.module, r)
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}
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case buscalls.StreamRead:
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var r buscalls.StreamReadRequest
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if err = decode(method, params, &r); err == nil {
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answer, err = conn.StreamRead(b.module, r)
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}
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case buscalls.StreamFill:
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var r buscalls.StreamRequest
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if err = decode(method, params, &r); err == nil {
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answer, err = conn.StreamFill(b.module, r)
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}
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case buscalls.WorkQueueSize:
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var r buscalls.WorkQueueRequest
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if err = decode(method, params, &r); err == nil {
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answer, err = conn.WorkQueueSize(b.module, r)
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}
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case buscalls.WorkQueueDead:
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var r buscalls.WorkQueueDeadRequest
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if err = decode(method, params, &r); err == nil {
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answer, err = conn.WorkQueueDead(b.module, r)
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}
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default:
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return nil, fmt.Errorf("the runtime answers no %s", method)
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}
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if err != nil {
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return nil, err
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}
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return json.Marshal(answer)
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}
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// BusStateWatch hands a bundle each change of its objects or its ledger, the current ones first.
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func (b *moduleBus) BusStateWatch(method string, params json.RawMessage, deliver func(json.RawMessage) error) (func(), error) {
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switch method {
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case buscalls.ObjectsWatch:
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var r buscalls.ObjectsWatchRequest
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if err := decode(method, params, &r); err != nil {
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return nil, err
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}
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return b.all.conn.ObjectsWatch(b.module, r, func(change buscalls.ObjectsChange) error {
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raw, err := json.Marshal(change)
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if err != nil {
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return err
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}
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return deliver(raw)
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})
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}
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return nil, fmt.Errorf("the runtime answers no %s", method)
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}
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// decode reads a bus-state call's request.
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func decode(method string, params json.RawMessage, into any) error {
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if err := json.Unmarshal(params, into); err != nil {
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return fmt.Errorf("%s's request is not of its shape (mesh-sdk buscalls): %w", method, err)
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}
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return nil
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}
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