system store - load from core - two steps publish - PR notes

Signed-off-by: Amit Prinz Setter <alphaprinz@gmail.com>

Author: alphaprinz

config.js

@@ -250,7 +250,7 @@ config.INTERNAL_STORAGE_POOL_NAME = 'system-internal-storage-pool';
 config.ALLOW_BUCKET_CREATE_ON_INTERNAL = true;
 config.BUCKET_AUTOCONF_TIER2_ENABLED = false;
 config.SYSTEM_STORE_LOAD_CONCURRENCY = parseInt(process.env.SYSTEM_STORE_LOAD_CONCURRENCY, 10) || 5;
-config.SYSTEM_STORE_SOURCE = process.env.SYSTEM_STORE_SOURCE || "db";
+config.SYSTEM_STORE_SOURCE = process.env.SYSTEM_STORE_SOURCE || "DB";
 //////////////////////////
 // MD AGGREGATOR CONFIG //
 //////////////////////////

src/api/server_inter_process_api.js

@@ -19,7 +19,8 @@ module.exports = {
                 properties: {
                     since: { idate: true },
                     load_from_core_step: {
-                        type: 'string'
+                        type: 'string',
+                        enum: ['CORE', 'ENDPOINT']
                     }
                 }
             },

src/server/common_services/server_inter_process.js

@@ -17,18 +17,8 @@ const server_rpc = require('../server_rpc');
  *
  */
 async function load_system_store(req) {
-    //if endpoints load from core, and this load is for core
-    //(ie, the first load_system_store() out of two),
-    //then endpoints skip it.
-    //endpoints will be updated in the next load_system_store()
-    //once core's in memory system store is updated.
-    const is_endpoint = process.env.HOSTNAME && process.env.HOSTNAME.indexOf("endpoint") !== -1;
-    if (is_endpoint && req?.rpc_params?.load_from_core_step === 'core') {
-        return;
-    }
-
     await system_store.load(
-        req && req.rpc_params && req.rpc_params.since
+        req && req.rpc_params && req.rpc_params.since, req?.rpc_params?.load_from_core_step.toUpperCase()
     );
 }
 

src/server/system_services/system_store.js

@@ -357,9 +357,9 @@ class SystemStore extends EventEmitter {
         this.START_REFRESH_THRESHOLD = 10 * 60 * 1000;
         this.FORCE_REFRESH_THRESHOLD = 60 * 60 * 1000;
         this.SYSTEM_STORE_LOAD_CONCURRENCY = config.SYSTEM_STORE_LOAD_CONCURRENCY || 5;
-        //load from core if enabled and this is an endpoint
+        //load from core is enabled and this is an endpoint
         const is_endpoint = process.env.HOSTNAME && process.env.HOSTNAME.indexOf("endpoint") !== -1;
-        this.source = (config.SYSTEM_STORE_SOURCE.toLowerCase() === 'core' && is_endpoint) ? SOURCE.CORE : SOURCE.DB;
+        this.source = (config.SYSTEM_STORE_SOURCE.toUpperCase() === 'CORE' && is_endpoint) ? SOURCE.CORE : SOURCE.DB;
         dbg.log0("system store source is", this.source);
         this._load_serial = new semaphore.Semaphore(1, { warning_timeout: this.START_REFRESH_THRESHOLD });
         for (const col of COLLECTIONS) {
@@ -416,7 +416,16 @@ class SystemStore extends EventEmitter {
         }
     }
 
-    async load(since) {
+    async load(since, load_from_core_step) {
+        //if endpoints load from core, and this load is for core
+        //(ie, the first load_system_store() out of two with load_from_core_step === 'CORE'),
+        //then endpoints skip it.
+        //endpoints will be updated in the next load_system_store()
+        //once core's in memory system store is updated.
+        if (this.source.toUpperCase() === 'CORE' && load_from_core_step && load_from_core_step.toUpperCase() === 'CORE') {
+            return;
+        }
+
         // serializing load requests since we have to run a fresh load after the previous one will finish
         // because it might not see the latest changes if we don't reload right after make_changes.
         return this._load_serial.surround(async () => {
@@ -674,20 +683,20 @@ class SystemStore extends EventEmitter {
                     method_api: 'server_inter_process_api',
                     method_name: 'load_system_store',
                     target: '',
-                    request_params: { since: last_update, load_from_core_step: 'core' }
+                    request_params: { since: last_update, load_from_core_step: 'CORE' }
                 });
 
                 //if endpoints are loading system store from core, we need to wait until
                 //above publish_to_cluster() will update core's in-memory db.
                 //the next publist_to_cluster() will make endpoints load the updated
                 //system store from core
-                if (config.SYSTEM_STORE_SOURCE.toLowerCase() === 'core') {
+                if (config.SYSTEM_STORE_SOURCE.toUpperCase() === 'CORE') {
                     dbg.log2("second phase publish");
                     await server_rpc.client.redirector.publish_to_cluster({
                         method_api: 'server_inter_process_api',
                         method_name: 'load_system_store',
                         target: '',
-                        request_params: { since: last_update, load_from_core_step: 'endpoint' }
+                        request_params: { since: last_update, load_from_core_step: 'ENDPOINT' }
                     });
                 }
             }