Switch to syn-teams.libsonnet

We switch the alertrouting discovery and alert patching to use the new
`syn-teams.libsonnet` Jsonnet library. This library is hosted at
https://github.com/projectsyn/jsonnet-libs and is intended to be used by
all components which interact with `parameters.syn.owner` and
`parameters.syn.teams`.

component/alert-routing-discovery.libsonnet

@@ -2,6 +2,7 @@ local com = import 'lib/commodore.libjsonnet';
 local kap = import 'lib/kapitan.libjsonnet';
 local kube = import 'lib/kube.libjsonnet';
 local prom = import 'lib/prom.libsonnet';
+local syn_teams = import 'syn/syn-teams.libsonnet';
 
 local inv = kap.inventory();
 local params = inv.parameters;
@@ -25,7 +26,7 @@ local discoverNS = function(app)
         else if std.isObject(p.namespace) && std.objectHas(p.namespace, 'name') && std.isString(p.namespace.name) then
           p.namespace.name;
 
-  local ks = prom.appKeys(app);
+  local ks = syn_teams.appKeys(app);
   local aliased = f(ks[0]);
   if aliased != null then
     aliased
@@ -44,7 +45,9 @@ local teamToNS = std.mapWithKey(
   function(_, a) std.uniq(std.sort(std.prune(a))),
   std.foldl(
     function(prev, app)
-      prev { [prom.teamForApplication(app)]+: [ discoverNS(app) ] },
+      local instance = syn_teams.appKeys(app, true)[0];
+      local team = syn_teams.teamForApplication(instance);
+      prev { [team]+: [ discoverNS(app) ] },
     inv.applications,
     {}
   )
@@ -86,7 +89,7 @@ local alertmanagerConfig =
   debugConfigMap: kube.ConfigMap('discovery-debug') {
     data: {
       local discoveredNamespaces = std.foldl(function(prev, app) prev { [app]: discoverNS(app) }, inv.applications, {}),
-      local discoveredTeams = std.foldl(function(prev, app) prev { [app]: prom.teamForApplication(app) }, inv.applications, {}),
+      local discoveredTeams = std.foldl(function(prev, app) prev { [app]: syn_teams.teamForApplication(syn_teams.appKeys(app, true)[0]) }, inv.applications, {}),
       applications: std.manifestJsonMinified(inv.applications),
       discovered_namespaces: std.manifestYamlDoc(discoveredNamespaces),
       apps_without_namespaces: std.manifestYamlDoc(std.foldl(function(prev, app) if discoveredNamespaces[app] == null then prev + [ app ] else prev, std.objectFields(discoveredNamespaces), [])),

jsonnetfile.jsonnet

@@ -1,6 +1,16 @@
 {
   version: 1,
   dependencies: std.prune([
+    {
+      source: {
+        git: {
+          remote: 'https://github.com/projectsyn/jsonnet-libs',
+          subdir: '',
+        },
+      },
+      version: 'initial-implementation',
+      name: 'syn',
+    },
     {
       source: {
         git: {

lib/openshift4-monitoring-alert-patching.libsonnet

@@ -2,7 +2,7 @@
 // arbitrary alert rules to adhere to the format required by the component's
 // approach for allowing us to patch upstream rules.
 local com = import 'lib/commodore.libjsonnet';
-local prom = import 'lib/prom.libsonnet';
+local syn_teams = import 'syn/syn-teams.libsonnet';
 
 local inv = com.inventory();
 
@@ -99,6 +99,9 @@ local filterRules(group, ignoreNames=[], preserveRecordingRules=false) =
  * \returns The patched rule
  */
 local patchRule(rule, patches={}, patchName=true) =
+  local fallbackTeam = std.get(inv.parameters, 'syn', {
+    owner: inv.parameters.openshift4_monitoring.fallback_team,
+  }).owner;
   if !std.objectHas(rule, 'alert') then
     rule
   else
@@ -113,7 +116,7 @@ local patchRule(rule, patches={}, patchName=true) =
       then
         rule.labels.syn_team
       else
-        prom.teamForApplication(inv.parameters._instance);
+        syn_teams.teamForApplication(inv.parameters._instance);
     rule {
       // Change alert names so we don't get multiple alerts with the same
       // name, as the logging operator deploys its own copy of these

lib/openshift4-monitoring-prom.libsonnet

@@ -4,13 +4,10 @@
  *        API reference: https://github.com/prometheus-operator/prometheus-operator/blob/master/Documentation/api.md
  */
 
-local com = import 'lib/commodore.libjsonnet';
 local kube = import 'lib/kube.libjsonnet';
 
 local alertpatching = import 'lib/alert-patching.libsonnet';
 
-local inv = com.inventory();
-
 // Define Prometheus Operator API versions
 local api_version = {
   monitoring: 'monitoring.coreos.com/v1',
@@ -57,81 +54,6 @@ local prometheusRule(name) =
   Alertmanager(name):
     kube._Object(api_version.monitoring, 'Alertmanager', name),
 
-  /**
-  * \brief Returns an array with the (aliased) application name and if aliased the original name in the second position.
-  *
-  * The application name is translated from kebab-case to snake_case, except if the second parameter is set to true.
-  *
-  * \arg name
-  *    The application name. Can be `name` or `name as alias`.
-  * \arg raw
-  *    If set to true, the application name is not translated from kebab-case to snake_case.
-  * \return
-  *    An array with the (aliased) application name and if aliased the original name in the second position.
-  */
-  appKeys: function(name, raw=false)
-    local normalized = function(name) if raw then name else std.strReplace(name, '-', '_');
-    // can be simplified with jsonnet > 0.19 which would support ' as ' as the substring
-    local parts = std.split(name, ' ');
-    if std.length(parts) == 1 then
-      [ normalized(parts[0]) ]
-    else if std.length(parts) == 3 && parts[1] == 'as' then
-      [ normalized(parts[2]), normalized(parts[0]) ]
-    else
-      error 'invalid application name `%s`' % name,
-
-  /**
-  * \brief Returns the team for the given application or null.
-  *
-  * It does so by looking at the top level syn parameter.
-  * The syn parameter should look roughly like this.
-  *
-  *   syn:
-  *     owner: clumsy-donkeys
-  *     teams:
-  *       chubby-cockroaches:
-  *         instances:
-  *           - superb-visualization
-  *       lovable-lizards:
-  *         instances:
-  *           - apartment-cats
-  *
-  * The application is first looked up in the instances of the teams, if no team is found, owner is used as fallback.
-  * An error is thrown if the application is found belonging to multiple teams.
-  *
-  * \arg app
-  *    The application name. Can be the merged `inventory().params._instance` or an (aliased) application name.
-  * \return
-  *    The team name or `null` if no team is found.
-  */
-  teamForApplication: function(app)
-    local params = inv.parameters;
-    local lookup = function(app)
-      if std.objectHas(params, 'syn') && std.objectHas(params.syn, 'teams') then
-        local teams = params.syn.teams;
-        local teamsForApp = std.foldl(
-          function(prev, team)
-            if std.objectHas(teams, team) && std.objectHas(teams[team], 'instances') && std.member(com.renderArray(teams[team].instances), app) then
-              prev + [ team ]
-            else
-              prev,
-          std.objectFields(teams),
-          [],
-        );
-        if std.length(teamsForApp) == 0 then
-          null
-        else if std.length(teamsForApp) == 1 then
-          teamsForApp[0]
-        else
-          error 'application `%s` is in multiple teams: %s' % [ app, std.join(', ', teamsForApp) ];
-
-    local teams = std.prune(std.map(lookup, self.appKeys(app, true)));
-
-    if std.length(teams) > 0 then
-      teams[0]
-    else if std.objectHas(params, 'syn') && std.objectHas(params.syn, 'owner') then
-      params.syn.owner,
-
   /**
    * \brief Function to render rules defined in the hierarchy
    *