Examples with PersistentVolumeClaimVolumeSource io.fabric8.kubernetes.api.model.PersistentVolumeClaimVolumeSource used on opensource projects

Example 1 with PersistentVolumeClaimVolumeSource

use of io.fabric8.kubernetes.api.model.PersistentVolumeClaimVolumeSource in project fabric8-maven-plugin by fabric8io.

the class VolumePermissionEnricher method adapt.

@Override
public void adapt(KubernetesListBuilder builder) {
    builder.accept(new TypedVisitor<PodTemplateSpecBuilder>() {

        @Override
        public void visit(PodTemplateSpecBuilder builder) {
            PodSpec podSpec = builder.buildSpec();
            if (podSpec == null) {
                return;
            }
            if (!checkForPvc(podSpec)) {
                return;
            }
            List<Container> containers = podSpec.getContainers();
            if (containers == null || containers.isEmpty()) {
                return;
            }
            log.verbose("Adding init container for changing persistent volumes access mode to %s", getConfig(Config.permission));
            if (!initContainerHandler.hasInitContainer(builder, ENRICHER_NAME)) {
                initContainerHandler.appendInitContainer(builder, createPvInitContainer(podSpec));
            }
        }

        private boolean checkForPvc(PodSpec podSpec) {
            List<Volume> volumes = podSpec.getVolumes();
            if (volumes != null) {
                for (Volume volume : volumes) {
                    PersistentVolumeClaimVolumeSource persistentVolumeClaim = volume.getPersistentVolumeClaim();
                    if (persistentVolumeClaim != null) {
                        return true;
                    }
                }
            }
            return false;
        }

        private JSONObject createPvInitContainer(PodSpec podSpec) {
            Map<String, String> mountPoints = extractMountPoints(podSpec);
            JSONObject entry = new JSONObject();
            entry.put("name", ENRICHER_NAME);
            entry.put("image", "busybox");
            entry.put("imagePullPolicy", "IfNotPresent");
            entry.put("command", createChmodCommandArray(mountPoints));
            entry.put("volumeMounts", createMounts(mountPoints));
            return entry;
        }

        private JSONArray createChmodCommandArray(Map<String, String> mountPoints) {
            JSONArray ret = new JSONArray();
            ret.put("chmod");
            ret.put(getConfig(Config.permission));
            Set<String> uniqueNames = new LinkedHashSet<>(mountPoints.values());
            for (String name : uniqueNames) {
                ret.put(name);
            }
            return ret;
        }

        private JSONArray createMounts(Map<String, String> mountPoints) {
            JSONArray ret = new JSONArray();
            for (Map.Entry<String, String> entry : mountPoints.entrySet()) {
                JSONObject mount = new JSONObject();
                mount.put("name", entry.getKey());
                mount.put("mountPath", entry.getValue());
                ret.put(mount);
            }
            return ret;
        }

        private Map<String, String> extractMountPoints(PodSpec podSpec) {
            Map<String, String> nameToMount = new LinkedHashMap<>();
            List<Volume> volumes = podSpec.getVolumes();
            if (volumes != null) {
                for (Volume volume : volumes) {
                    PersistentVolumeClaimVolumeSource persistentVolumeClaim = volume.getPersistentVolumeClaim();
                    if (persistentVolumeClaim != null) {
                        String name = volume.getName();
                        String mountPath = getMountPath(podSpec.getContainers(), name);
                        nameToMount.put(name, mountPath);
                    }
                }
            }
            return nameToMount;
        }

        private String getMountPath(List<Container> containers, String name) {
            for (Container container : containers) {
                List<VolumeMount> volumeMounts = container.getVolumeMounts();
                if (volumeMounts != null) {
                    for (VolumeMount volumeMount : volumeMounts) {
                        if (name.equals(volumeMount.getName())) {
                            return volumeMount.getMountPath();
                        }
                    }
                }
            }
            throw new IllegalArgumentException("No matching volume mount found for volume " + name);
        }
    });
    builder.accept(new TypedVisitor<PersistentVolumeClaimBuilder>() {

        @Override
        public void visit(PersistentVolumeClaimBuilder pvcBuilder) {
            // lets ensure we have a default storage class so that PVs will get dynamically created OOTB
            if (pvcBuilder.buildMetadata() == null) {
                pvcBuilder.withNewMetadata().endMetadata();
            }
            String storageClass = getConfig(Config.defaultStorageClass);
            if (Strings.isNotBlank(storageClass) && !pvcBuilder.buildMetadata().getAnnotations().containsKey(VOLUME_STORAGE_CLASS_ANNOTATION)) {
                pvcBuilder.editMetadata().addToAnnotations(VOLUME_STORAGE_CLASS_ANNOTATION, storageClass).endMetadata();
            }
        }
    });
}