static CloudProviderInfo deserializeGcpMetadata()

in apm-agent-core/src/main/java/co/elastic/apm/agent/impl/metadata/CloudMetadataProvider.java [314:351]
38 lines of code
12 McCabe index (conditional complexity)

    static CloudProviderInfo deserializeGcpMetadata(@Nullable String rawMetadata) throws IOException {
        if (rawMetadata == null) {
            return null;
        }
        Map<String, Object> map = deserialize(rawMetadata);
        CloudProviderInfo cloudProviderInfo = new CloudProviderInfo("gcp");
        Object instanceData = map.get("instance");
        if (instanceData instanceof Map) {
            @SuppressWarnings("unchecked") Map<String, Object> instanceMap = (Map<String, Object>) instanceData;
            Long instanceId = (instanceMap.get("id") instanceof Long) ? (Long) instanceMap.get("id") : null;
            String instanceName = (instanceMap.get("name") instanceof String) ? (String) instanceMap.get("name") : null;
            String zone = instanceMap.get("zone") instanceof String ? (String) instanceMap.get("zone") : null;
            cloudProviderInfo.setInstance(new NameAndIdField(instanceName, instanceId));
            String machineType = instanceMap.get("machineType") instanceof String ? (String) instanceMap.get("machineType") : null;
            if (machineType != null) {
                String[] machinePathParts = machineType.split("/");
                cloudProviderInfo.setMachine(new CloudProviderInfo.ProviderMachine(machinePathParts[machinePathParts.length - 1]));
            }
            if (zone != null) {
                String[] zoneParts = zone.split("/");
                String availabilityZone = zoneParts[zoneParts.length - 1];
                cloudProviderInfo.setAvailabilityZone(availabilityZone);
                int hyphenLastIndex = availabilityZone.lastIndexOf("-");
                cloudProviderInfo.setRegion(hyphenLastIndex != -1 ? availabilityZone.substring(0, hyphenLastIndex) : null);
            }
        } else {
            logger.warn("Error while parsing GCP metadata - expecting the value of the 'instance' entry to be a map but it is not");
        }
        Object projectData = map.get("project");
        if (projectData instanceof Map) {
            @SuppressWarnings("unchecked") Map<String, Object> projectMap = (Map<String, Object>) projectData;
            String projectId = projectMap.get("projectId") instanceof String ? (String) projectMap.get("projectId") : null;
            cloudProviderInfo.setProject(new NameAndIdField(null, projectId));
        } else {
            logger.warn("Error while parsing GCP metadata - expecting the value of the 'project' entry to be a map but it is not");
        }
        return cloudProviderInfo;
    }