feat(system): add package LOGGER

thi-ng · Mar 30, 2021 · f67364c · f67364c
1 parent 01273d1
commit f67364c
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Showing 2 changed files with 14 additions and 4 deletions.
diff --git a/packages/system/src/api.ts b/packages/system/src/api.ts
@@ -1,4 +1,4 @@
-import type { Fn, Keys } from "@thi.ng/api";
+import { Fn, ILogger, Keys, NULL_LOGGER } from "@thi.ng/api";
 
 export interface ILifecycle {
     /**
@@ -48,3 +48,13 @@ export type SystemSpecs<T extends SystemMap<T>> = Record<
         deps?: Keys<T>[];
     }
 >;
+
+/** @internal */
+export let LOGGER = NULL_LOGGER;
+
+/**
+ * Sets package logger to given instance.
+ *
+ * @param logger
+ */
+export const setLogger = (logger: ILogger) => (LOGGER = logger);
diff --git a/packages/system/src/system.ts b/packages/system/src/system.ts
@@ -1,6 +1,6 @@
 import type { Keys } from "@thi.ng/api";
 import { DGraph } from "@thi.ng/dgraph";
-import type { ILifecycle, SystemMap, SystemSpecs } from "./api";
+import { ILifecycle, LOGGER, SystemMap, SystemSpecs } from "./api";
 
 export const defSystem = <T extends SystemMap<T>>(map: SystemSpecs<T>) =>
     new System<T>(map);
@@ -37,7 +37,7 @@ export class System<T extends SystemMap<T>> implements ILifecycle {
         for (let id of this.topology) {
             const comp = this.components[id];
             if (comp.start && !(await comp.start())) {
-                console.warn(`error starting component: ${id}`);
+                LOGGER.warn(`error starting component: ${id}`);
                 return false;
             }
         }
@@ -59,7 +59,7 @@ export class System<T extends SystemMap<T>> implements ILifecycle {
             const id = topo[i];
             const comp = this.components[id];
             if (comp.stop && !(await comp.stop())) {
-                console.warn(`error stopping component: ${id}`);
+                LOGGER.warn(`error stopping component: ${id}`);
             }
         }
         return true;