private List getMapEntryList()

in src/main/java/org/apache/sling/resourceresolver/impl/mapping/VanityPathHandler.java [278:328]
34 lines of code
13 McCabe index (conditional complexity)

    private List<MapEntry> getMapEntryList(String vanityPath) {
        List<MapEntry> mapEntries = null;

        boolean initFinished = vanityPathsProcessed.get();
        boolean probablyPresent = false;

        if (initFinished) {
            // total number of lookups after init (and when cache not complete)
            long current = this.vanityPathLookups.incrementAndGet();
            if (current >= Long.MAX_VALUE - 100000) {
                // reset counters when we get close the limit
                this.vanityPathLookups.set(1);
                this.vanityPathBloomNegatives.set(0);
                this.vanityPathBloomFalsePositives.set(0);
                log.info("Vanity Path metrics reset to 0");
            }

            // init is done - check the bloom filter
            probablyPresent = BloomFilterUtils.probablyContains(vanityBloomFilter, vanityPath);
            log.trace("bloom filter lookup for {} -> {}", vanityPath, probablyPresent);

            if (!probablyPresent) {
                // filtered by Bloom filter
                this.vanityPathBloomNegatives.incrementAndGet();
            }
        }

        if (!initFinished || probablyPresent) {

            // check the cache
            mapEntries = this.resolveMapsMap.get(vanityPath);

            if (mapEntries == null) {
                // try temporary map first
                if (!initFinished && temporaryResolveMapsMap != null) {
                    mapEntries = getMapEntriesFromTemporaryMap(vanityPath);
                }
                // still no entries? Try regular lookup, then update the temporary map
                if (mapEntries == null) {
                    mapEntries = getMapEntriesFromRepository(vanityPath, initFinished);
                }
            }

            if (mapEntries == null && probablyPresent) {
                // Bloom filter had a false positive
                this.vanityPathBloomFalsePositives.incrementAndGet();
            }
        }

        return mapEntries == noMapEntries ? null : mapEntries;
    }