private String findTagSha()

in core/src/main/java/io/fabric8/maven/core/service/openshift/ImageStreamService.java [185:232]
44 lines of code
13 McCabe index (conditional complexity)

    private String findTagSha(OpenShiftClient client, String imageStreamName, String namespace) throws MojoExecutionException {
        ImageStream currentImageStream = null;
        for (int i = 0; i < IMAGE_STREAM_TAG_RETRIES; i++) {
            if (i > 0) {
                log.info("Retrying to find tag on ImageStream %s", imageStreamName);
                try {
                    Thread.sleep(IMAGE_STREAM_TAG_RETRY_TIMEOUT_IN_MILLIS);
                } catch (InterruptedException e) {
                    log.debug("interrupted", e);
                }
            }
            currentImageStream = client.imageStreams().withName(imageStreamName).get();
            if (currentImageStream == null) {
                continue;
            }
            ImageStreamStatus status = currentImageStream.getStatus();
            if (status == null) {
                continue;
            }
            List<NamedTagEventList> tags = status.getTags();
            if (tags == null || tags.isEmpty()) {
                continue;
            }
            // latest tag is the first
            TAG_EVENT_LIST:
            for (NamedTagEventList list : tags) {
                List<TagEvent> items = list.getItems();
                if (items == null) {
                    continue TAG_EVENT_LIST;
                }

                // latest item is the first
                for (TagEvent item : items) {
                    String image = item.getImage();
                    if (Strings.isNotBlank(image)) {
                        log.info("Found tag on ImageStream " + imageStreamName + " tag: " + image);
                        return image;
                    }
                }
            }
        }
        // No image found, even after several retries:
        if (currentImageStream == null) {
            throw new MojoExecutionException("Could not find a current ImageStream with name " + imageStreamName + " in namespace " + namespace);
        } else {
            throw new MojoExecutionException("Could not find a tag in the ImageStream " + imageStreamName);
        }
    }