EVCacheKey getEVCacheKey()

in evcache-core/src/main/java/com/netflix/evcache/EVCacheImpl.java [201:227]

• 24 lines of code
• 14 McCabe index (conditional complexity)

    EVCacheKey getEVCacheKey(final String key) {
        if(key == null || key.length() == 0) throw new NullPointerException("Key cannot be null or empty");
        for(int i = 0; i < key.length(); i++) {
            if(Character.isWhitespace(key.charAt(i))){
                throw new IllegalArgumentException("key ``" + key + "`` contains invalid character at position " + i );
            }
        }

        final String canonicalKey;
        if (this._cacheName == null) {
            canonicalKey = key;
        } else {
            final int keyLength = _cacheName.length() + 1 + key.length();
            canonicalKey  = new StringBuilder(keyLength).append(_cacheName).append(':').append(key).toString();
        }

        if (canonicalKey.length() > this.maxKeyLength.get() && !hashKey.get() && !autoHashKeys.get()) {
            final String errMsg = String.format("CanonicalKey ``%s`` is too long (maxLen = %d, keyLen = %d, canonicalKeyLen = %d)", canonicalKey, this.maxKeyLength.get(), key.length(), canonicalKey.length());
            log.warn(errMsg);
            throw new IllegalArgumentException(errMsg);
        }

        boolean shouldHashKeyAtAppLevel = hashKey.get() || (canonicalKey.length() > this.maxKeyLength.get() && autoHashKeys.get());
        final EVCacheKey evcKey = new EVCacheKey(_appName, key, canonicalKey, shouldHashKeyAtAppLevel ? KeyHasher.getHashingAlgorithmFromString(hashingAlgo.get()) : null, this.shouldEncodeHashKey, this.maxDigestBytes, this.maxHashLength, this.encoderBase.get());
        if (log.isDebugEnabled() && shouldLog()) log.debug("Key : " + key + "; EVCacheKey : " + evcKey);
        return evcKey;
    }