private static List processRuleManifest()

in aws-xray-recorder-sdk-core/src/main/java/com/amazonaws/xray/strategy/sampling/LocalizedSamplingStrategy.java [120:154]
35 lines of code
16 McCabe index (conditional complexity)

    private static List<SamplingRule> processRuleManifest(SamplingRuleManifest manifest) {
        SamplingRule defaultRule = manifest.getDefaultRule();
        if (!SUPPORTED_VERSIONS.contains(manifest.getVersion())) {
            throw newInvalidSamplingRuleManifestException("Manifest version: " + manifest.getVersion() + " is not supported.");
        }
        if (defaultRule != null) {
            if (defaultRule.getUrlPath() != null || defaultRule.getHost() != null || defaultRule.getHttpMethod() != null) {
                throw newInvalidSamplingRuleManifestException(
                    "The default rule must not specify values for url_path, host, or http_method.");
            } else if (defaultRule.getFixedTarget() < 0 || defaultRule.getRate() < 0) {
                throw newInvalidSamplingRuleManifestException(
                    "The default rule must specify non-negative values for fixed_target and rate.");
            }
            List<SamplingRule> rules = manifest.getRules();
            if (rules != null) {
                for (SamplingRule rule : rules) {
                    if (manifest.getVersion() == 1) {
                        rule.setHost(rule.getServiceName());
                    }
                    if (rule.getUrlPath() == null || rule.getHost() == null || rule.getHttpMethod() == null) {
                        throw newInvalidSamplingRuleManifestException(
                            "All rules must have values for url_path, host, and http_method.");
                    } else if (rule.getFixedTarget() < 0 || rule.getRate() < 0) {
                        throw newInvalidSamplingRuleManifestException(
                            "All rules must have non-negative values for fixed_target and rate.");
                    }
                }
                return rules;
            } else {
                return new ArrayList<>();
            }
        } else {
            throw newInvalidSamplingRuleManifestException("A default rule must be provided.");
        }
    }