nebulous/optimiser-controller
Code Issues Proposed changes

Sort by cpu, ram so we take the smallest node

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Change-Id: Ic5463918c45a27edcccad35c35ccce4748954d92
This commit is contained in:
Rudi Schlatte 2024-03-19 15:19:00 +01:00
parent 645eb99e30
commit 7aca3195c2
1 changed files with 21 additions and 8 deletions
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29
optimiser-controller/src/main/java/eu/nebulouscloud/optimiser/controller/ExnConnector.java
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@ -323,12 +323,19 @@ public class ExnConnector {
long rank2 = c2.at("/rank").longValue();
double score1 = c1.at("/score").doubleValue();
double score2 = c2.at("/score").doubleValue();
int cpu1 = c1.at("/hardware/cores").intValue();
int cpu2 = c2.at("/hardware/cores").intValue();
int ram1 = c1.at("/hardware/ram").intValue();
int ram2 = c2.at("/hardware/ram").intValue();
// We return < 0 if c1 < c2. Since we want to sort better
// candidates first, c1 < c2 if rank is lower or rank is equal
// and score is higher. (Lower rank = better, higher score =
// better.)
// better.) Afterwards we rank lower hardware requirements
// better than higher ones.
if (rank1 != rank2) return Math.toIntExact(rank1 - rank2);
else return Math.toIntExact(Math.round(score2 - score1));
else if (score2 != score1) return Math.toIntExact(Math.round(score2 - score1));
else if (cpu1 != cpu2) return cpu1 - cpu2;
else return ram1 - ram2;
});
return result.stream()
.map(candidate ->
@ -368,12 +375,18 @@ public class ExnConnector {
Map<String, Object> response = findSalNodeCandidates.sendSync(msg, appID, null, false);
JsonNode payload = extractPayloadFromExnResponse(response, appID);
if (payload.isMissingNode()) return null;
try {
return Arrays.asList(mapper.treeToValue(payload, NodeCandidate[].class));
} catch (JsonProcessingException e) {
log.error("Could not decode node candidates payload", keyValue("appId", appID), e);
return null;
}
if (!payload.isArray()) return null;
List<NodeCandidate> candidates = Arrays.asList(mapper.convertValue(payload, NodeCandidate[].class));
// We try to choose candidates with lower hardware requirements; sort by cores, ram
candidates.sort((NodeCandidate c1, NodeCandidate c2) -> {
int cpu1 = c1.getHardware().getCores();
int cpu2 = c2.getHardware().getCores();
long ram1 = c1.getHardware().getRam();
long ram2 = c2.getHardware().getRam();
if (cpu1 != cpu2) return cpu1 - cpu2;
else return Math.toIntExact(ram1 - ram2);
});
return candidates;
}
/**