Add ConfigMap support for k8s. (#714)

* Minor fixes for deploying with k8s and podman.

* ConfigMap support

stack_orchestrator/deploy/k8s/cluster_info.py

@@ -13,6 +13,8 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http:#www.gnu.org/licenses/>.
 
+import os
+
 from kubernetes import client
 from typing import Any, List, Set
 
@@ -112,9 +114,10 @@ class ClusterInfo:
             services = pod["services"]
             for service_name in services:
                 service_info = services[service_name]
-                port = int(service_info["ports"][0])
-                if opts.o.debug:
-                    print(f"service port: {port}")
+                if "ports" in service_info:
+                    port = int(service_info["ports"][0])
+                    if opts.o.debug:
+                        print(f"service port: {port}")
         service = client.V1Service(
             metadata=client.V1ObjectMeta(name=f"{self.app_name}-service"),
             spec=client.V1ServiceSpec(
@@ -130,30 +133,70 @@ class ClusterInfo:
 
     def get_pvcs(self):
         result = []
-        volumes = named_volumes_from_pod_files(self.parsed_pod_yaml_map)
+        spec_volumes = self.spec.get_volumes()
+        named_volumes = named_volumes_from_pod_files(self.parsed_pod_yaml_map)
         if opts.o.debug:
-            print(f"Volumes: {volumes}")
-        for volume_name in volumes:
+            print(f"Spec Volumes: {spec_volumes}")
+            print(f"Named Volumes: {named_volumes}")
+        for volume_name in spec_volumes:
+            if volume_name not in named_volumes:
+                if opts.o.debug:
+                    print(f"{volume_name} not in pod files")
+                continue
             spec = client.V1PersistentVolumeClaimSpec(
                 access_modes=["ReadWriteOnce"],
                 storage_class_name="manual",
                 resources=client.V1ResourceRequirements(
                     requests={"storage": "2Gi"}
                 ),
-                volume_name=volume_name
+                volume_name=f"{self.app_name}-{volume_name}"
             )
             pvc = client.V1PersistentVolumeClaim(
-                metadata=client.V1ObjectMeta(name=volume_name,
-                                             labels={"volume-label": volume_name}),
+                metadata=client.V1ObjectMeta(name=f"{self.app_name}-{volume_name}",
+                                             labels={"volume-label": f"{self.app_name}-{volume_name}"}),
                 spec=spec,
             )
             result.append(pvc)
         return result
 
+    def get_configmaps(self):
+        result = []
+        spec_configmaps = self.spec.get_configmaps()
+        named_volumes = named_volumes_from_pod_files(self.parsed_pod_yaml_map)
+        for cfg_map_name, cfg_map_path in spec_configmaps.items():
+            if cfg_map_name not in named_volumes:
+                if opts.o.debug:
+                    print(f"{cfg_map_name} not in pod files")
+                continue
+
+            if not cfg_map_path.startswith("/"):
+                cfg_map_path = os.path.join(os.path.dirname(self.spec.file_path), cfg_map_path)
+
+            # Read in all the files at a single-level of the directory.  This mimics the behavior
+            # of `kubectl create configmap foo --from-file=/path/to/dir`
+            data = {}
+            for f in os.listdir(cfg_map_path):
+                full_path = os.path.join(cfg_map_path, f)
+                if os.path.isfile(full_path):
+                    data[f] = open(full_path, 'rt').read()
+
+            spec = client.V1ConfigMap(
+                metadata=client.V1ObjectMeta(name=f"{self.app_name}-{cfg_map_name}",
+                                             labels={"configmap-label": cfg_map_name}),
+                data=data
+            )
+            result.append(spec)
+        return result
+
     def get_pvs(self):
         result = []
-        volumes = named_volumes_from_pod_files(self.parsed_pod_yaml_map)
-        for volume_name in volumes:
+        spec_volumes = self.spec.get_volumes()
+        named_volumes = named_volumes_from_pod_files(self.parsed_pod_yaml_map)
+        for volume_name in spec_volumes:
+            if volume_name not in named_volumes:
+                if opts.o.debug:
+                    print(f"{volume_name} not in pod files")
+                continue
             spec = client.V1PersistentVolumeSpec(
                 storage_class_name="manual",
                 access_modes=["ReadWriteOnce"],
@@ -161,8 +204,8 @@ class ClusterInfo:
                 host_path=client.V1HostPathVolumeSource(path=get_node_pv_mount_path(volume_name))
             )
             pv = client.V1PersistentVolume(
-                metadata=client.V1ObjectMeta(name=volume_name,
-                                             labels={"volume-label": volume_name}),
+                metadata=client.V1ObjectMeta(name=f"{self.app_name}-{volume_name}",
+                                             labels={"volume-label": f"{self.app_name}-{volume_name}"}),
                 spec=spec,
             )
             result.append(pv)
@@ -178,10 +221,11 @@ class ClusterInfo:
                 container_name = service_name
                 service_info = services[service_name]
                 image = service_info["image"]
-                port = int(service_info["ports"][0])
-                if opts.o.debug:
-                    print(f"image: {image}")
-                    print(f"service port: {port}")
+                if "ports" in service_info:
+                    port = int(service_info["ports"][0])
+                    if opts.o.debug:
+                        print(f"image: {image}")
+                        print(f"service port: {port}")
                 # Re-write the image tag for remote deployment
                 image_to_use = remote_tag_for_image(
                     image, self.spec.get_image_registry()) if self.spec.get_image_registry() is not None else image
@@ -199,7 +243,7 @@ class ClusterInfo:
                     ),
                 )
                 containers.append(container)
-        volumes = volumes_for_pod_files(self.parsed_pod_yaml_map)
+        volumes = volumes_for_pod_files(self.parsed_pod_yaml_map, self.spec)
         image_pull_secrets = [client.V1LocalObjectReference(name="laconic-registry")]
         template = client.V1PodTemplateSpec(
             metadata=client.V1ObjectMeta(labels={"app": self.app_name}),

stack_orchestrator/deploy/k8s/deploy_k8s.py

@@ -1,5 +1,4 @@
 # Copyright © 2023 Vulcanize
-
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
@@ -110,6 +109,20 @@ class K8sDeployer(Deployer):
             if opts.o.debug:
                 print("PVCs created:")
                 print(f"{pvc_resp}")
+
+        # Figure out the ConfigMaps for this deployment
+        config_maps = self.cluster_info.get_configmaps()
+        for cfg_map in config_maps:
+            if opts.o.debug:
+                print(f"Sending this ConfigMap: {cfg_map}")
+            cfg_rsp = self.core_api.create_namespaced_config_map(
+                body=cfg_map,
+                namespace=self.k8s_namespace
+            )
+            if opts.o.debug:
+                print("ConfigMap created:")
+                print(f"{cfg_rsp}")
+
         # Process compose files into a Deployment
         deployment = self.cluster_info.get_deployment(image_pull_policy=None if self.is_kind() else "Always")
         # Create the k8s objects
@@ -135,17 +148,21 @@ class K8sDeployer(Deployer):
         if not self.is_kind():
             ingress: client.V1Ingress = self.cluster_info.get_ingress()
 
-            if opts.o.debug:
-                print(f"Sending this ingress: {ingress}")
-            ingress_resp = self.networking_api.create_namespaced_ingress(
-                namespace=self.k8s_namespace,
-                body=ingress
-            )
-            if opts.o.debug:
-                print("Ingress created:")
-                print(f"{ingress_resp}")
+            if ingress:
+                if opts.o.debug:
+                    print(f"Sending this ingress: {ingress}")
+                ingress_resp = self.networking_api.create_namespaced_ingress(
+                    namespace=self.k8s_namespace,
+                    body=ingress
+                )
+                if opts.o.debug:
+                    print("Ingress created:")
+                    print(f"{ingress_resp}")
+            else:
+                if opts.o.debug:
+                    print("No ingress configured")
 
-    def down(self, timeout, volumes):
+    def down(self, timeout, volumes):  # noqa: C901
         self.connect_api()
         # Delete the k8s objects
         # Create the host-path-mounted PVs for this deployment
@@ -175,6 +192,22 @@ class K8sDeployer(Deployer):
                     print(f"{pvc_resp}")
             except client.exceptions.ApiException as e:
                 _check_delete_exception(e)
+
+        # Figure out the ConfigMaps for this deployment
+        cfg_maps = self.cluster_info.get_configmaps()
+        for cfg_map in cfg_maps:
+            if opts.o.debug:
+                print(f"Deleting this ConfigMap: {cfg_map}")
+            try:
+                cfg_map_resp = self.core_api.delete_namespaced_config_map(
+                    name=cfg_map.metadata.name, namespace=self.k8s_namespace
+                )
+                if opts.o.debug:
+                    print("ConfigMap deleted:")
+                    print(f"{cfg_map_resp}")
+            except client.exceptions.ApiException as e:
+                _check_delete_exception(e)
+
         deployment = self.cluster_info.get_deployment()
         if opts.o.debug:
             print(f"Deleting this deployment: {deployment}")
@@ -198,14 +231,18 @@ class K8sDeployer(Deployer):
 
         if not self.is_kind():
             ingress: client.V1Ingress = self.cluster_info.get_ingress()
-            if opts.o.debug:
-                print(f"Deleting this ingress: {ingress}")
-            try:
-                self.networking_api.delete_namespaced_ingress(
-                    name=ingress.metadata.name, namespace=self.k8s_namespace
-                )
-            except client.exceptions.ApiException as e:
-                _check_delete_exception(e)
+            if ingress:
+                if opts.o.debug:
+                    print(f"Deleting this ingress: {ingress}")
+                try:
+                    self.networking_api.delete_namespaced_ingress(
+                        name=ingress.metadata.name, namespace=self.k8s_namespace
+                    )
+                except client.exceptions.ApiException as e:
+                    _check_delete_exception(e)
+            else:
+                if opts.o.debug:
+                    print("No ingress to delete")
 
         if self.is_kind():
             # Destroy the kind cluster

stack_orchestrator/deploy/k8s/helpers.py

@@ -73,7 +73,7 @@ def named_volumes_from_pod_files(parsed_pod_files):
         parsed_pod_file = parsed_pod_files[pod]
         if "volumes" in parsed_pod_file:
             volumes = parsed_pod_file["volumes"]
-            for volume in volumes.keys():
+            for volume, value in volumes.items():
                 # Volume definition looks like:
                 # 'laconicd-data': None
                 named_volumes.append(volume)
@@ -98,22 +98,31 @@ def volume_mounts_for_service(parsed_pod_files, service):
                         volumes = service_obj["volumes"]
                         for mount_string in volumes:
                             # Looks like: test-data:/data
-                            (volume_name, mount_path) = mount_string.split(":")
-                            volume_device = client.V1VolumeMount(mount_path=mount_path, name=volume_name)
+                            parts = mount_string.split(":")
+                            volume_name = parts[0]
+                            mount_path = parts[1]
+                            mount_options = parts[2] if len(parts) == 3 else None
+                            volume_device = client.V1VolumeMount(
+                                mount_path=mount_path, name=volume_name, read_only="ro" == mount_options)
                             result.append(volume_device)
     return result
 
 
-def volumes_for_pod_files(parsed_pod_files):
+def volumes_for_pod_files(parsed_pod_files, spec):
     result = []
     for pod in parsed_pod_files:
         parsed_pod_file = parsed_pod_files[pod]
         if "volumes" in parsed_pod_file:
             volumes = parsed_pod_file["volumes"]
             for volume_name in volumes.keys():
-                claim = client.V1PersistentVolumeClaimVolumeSource(claim_name=volume_name)
-                volume = client.V1Volume(name=volume_name, persistent_volume_claim=claim)
-                result.append(volume)
+                if volume_name in spec.get_configmaps():
+                    config_map = client.V1ConfigMapVolumeSource(name=volume_name)
+                    volume = client.V1Volume(name=volume_name, config_map=config_map)
+                    result.append(volume)
+                else:
+                    claim = client.V1PersistentVolumeClaimVolumeSource(claim_name=volume_name)
+                    volume = client.V1Volume(name=volume_name, persistent_volume_claim=claim)
+                    result.append(volume)
     return result
 
 
@@ -158,7 +167,7 @@ def _generate_kind_mounts(parsed_pod_files, deployment_dir):
                         volume_definitions.append(
                             f"  - hostPath: {_make_absolute_host_path(volume_host_path_map[volume_name], deployment_dir)}\n"
                             f"    containerPath: {get_node_pv_mount_path(volume_name)}"
-                            )
+                        )
     return (
         "" if len(volume_definitions) == 0 else (
             "  extraMounts:\n"