Allow sorting StateChange callbacks

If the key of the callback is a number, it will be used to invoke
callbacks with the correct ordering.

.github/workflows/codemeta_validate.yaml

@@ -0,0 +1,21 @@
+name: validate codemeta
+
+on:
+  push:
+    paths:
+    - codemeta.json
+    - .github/workflows/codemeta_validate.yaml
+  pull_request:
+    paths:
+    - codemeta.json
+    - .github/workflows/codemeta_validate.yaml
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: gitlab-registry.in2p3.fr/escape2020/wp3/eossr:v1.0
+    steps:
+      - uses: actions/checkout@v3
+      - name: validate codemeta
+        run: eossr-metadata-validator codemeta.json

.zenodo.json

@@ -1,6 +1,7 @@
 {
     "creators": [
         {
+            "orcid": "0000-0002-8071-4497",
             "name": "Al-Turany, Mohammad"
         },
         {

codemeta.json

@@ -7,11 +7,20 @@
   "datePublished": "2018-04-15",
   "developmentStatus": "active",
   "codeRepository": "https://github.com/FairRootGroup/FairMQ/",
+  "readme": "https://github.com/FairRootGroup/FairMQ/#readme",
   "issueTracker": "https://github.com/FairRootGroup/FairMQ/issues",
   "identifier": "https://doi.org/10.5281/zenodo.1689985",
+  "maintainer": [
+    {
+      "@type": "ResearchOrganisation",
+      "@id": "https://ror.org/02k8cbn47",
+      "name": "GSI Helmholtz Centre for Heavy Ion Research"
+    }
+  ],
   "author": [
     {
       "@type": "Person",
+      "@id": "https://orcid.org/0000-0002-8071-4497",
       "givenName": "Mohammad",
       "familyName": "Al-Turany"
     },

fairmq/Device.cxx

@@ -288,7 +288,7 @@ void Device::AttachChannels(vector<Channel*>& chans)
                 // remove the channel from the uninitialized container
                 itr = chans.erase(itr);
             } else {
-                LOG(error) << "failed to attach channel " << (*itr)->fName << " (" << (*itr)->fMethod << ")";
+                LOG(error) << "failed to attach channel " << (*itr)->fName << " (" << (*itr)->fMethod << " on " << (*itr)->fAddress << ")";
                 ++itr;
             }
         } else {

fairmq/StateMachine.cxx

@@ -310,7 +310,9 @@ try {
 
 void StateMachine::SubscribeToStateChange(const string& key, function<void(const State)> callback)
 {
-    static_pointer_cast<FairMQFSM>(fFsm)->fStateChangeSignalsMap.insert({key, static_pointer_cast<FairMQFSM>(fFsm)->fStateChangeSignal.connect(callback)});
+    // Check if the key has a integer value as prefix, if yes, decode it.
+    int i = strtol(key.c_str(), nullptr, 10);
+    static_pointer_cast<FairMQFSM>(fFsm)->fStateChangeSignalsMap.insert({key, static_pointer_cast<FairMQFSM>(fFsm)->fStateChangeSignal.connect(i, callback)});
 }
 
 void StateMachine::UnsubscribeFromStateChange(const string& key)