generate: generate: Bump to 0.0.15

Signed-off-by: Enno Tensing <tenno@suij.in>

Makefile

@@ -1,18 +1,19 @@
-DESTDIR ?= /usr
-BINDIR ?= $(DESTDIR)/bin
-VARDIR ?= /var/lib/containerctl
+BINDIR ?= $(DESTDIR)/usr/bin
+VARDIR ?= $(DESTDIR)/var/lib/containerctl
 GENERATEDIR ?= $(VARDIR)/generate
 CONFIGDIR ?= $(VARDIR)/configs
 CONTAINERDIR ?= $(VARDIR)/containers
+ENVDIR ?= $(VARDIR)/environment-files
 
 install:
 	mkdir -p \
-		$(PREFIX)/$(GENERATEDIR) \
-		$(PREFIX)/$(CONFIGDIR) \
-		$(PREFIX)/$(CONTAINERDIR) \
-		$(PREFIX)/$(BINDIR)
-	install -m755 containerctl $(PREFIX)/$(BINDIR)
-	cp -t $(PREFIX)/$(GENERATEDIR) \
+		$(PREFIX)$(GENERATEDIR) \
+		$(PREFIX)$(CONFIGDIR) \
+		$(PREFIX)$(CONTAINERDIR) \
+		$(PREFIX)$(ENVDIR) \
+		$(PREFIX)$(BINDIR)
+	install -m755 containerctl $(PREFIX)$(BINDIR)
+	cp -t $(PREFIX)$(GENERATEDIR) \
 		generate/container.py \
 		generate/log.py \
 		generate/generate.py

containerctl

@@ -11,24 +11,46 @@ LOGDIR="/var/log/containerctl"
 TODAY="$(date '+%F')"
 LOG="${LOGDIR}/${TODAY}"
 
-log_error()
+get_python_path()
 {
-	printf '[%b] (EE) %b\n' "${TODAY}" "${@}" | tee -a "${LOG}"
+	py="python3"
+	pyver="$(/usr/bin/env "${py}" -c 'import sys; print(sys.version_info.minor)')"
+	if [ "${pyver}" -lt "11" ]
+	then
+		pyver="13"
+		py="python3.${pyver}"
+	else
+		printf '%b' "${py}"
+		return
+	fi
+
+	while [ "${pyver}" -ge 11 ]
+	do
+		if /usr/bin/env "${py}" -c "print('${py}')" 2> /dev/null
+		then
+			return
+		fi
+		pyver=$((pyver - 1))
+		py="python3.${pyver}"
+	done
+
+	log_error 'containerctl needs at least Python 3.11 to run!'
+	exit 1
 }
 
-list_dir()
+log_error()
 {
-	find "${1}" -mindepth 1 -type d
+	printf '[%b] (EE) %b\n' "${TODAY}" "${@}" | tee -a "${LOG}" 2> /dev/null
 }
 
 list_containers()
 {
-	list_dir "${CONTAINERDIR}"
+	find "${CONTAINERDIR}" -mindepth 1 -type d
 }
 
 list_configs()
 {
-	list_dir "${CONFIGDIR}"
+	find "${CONFIGDIR}" -mindepth 1 -type f
 }
 
 exec_script()
@@ -111,7 +133,8 @@ generate_container()
 		exit 1
 	fi
 
-	/usr/bin/env python3 "${BASEDIR}/generate/generate.py" \
+	mypython="$(get_python_path)"
+	/usr/bin/env "${mypython}" "${BASEDIR}/generate/generate.py" \
 		"${CONFIGDIR}/${config}" "${LOG}" "${CONTAINERDIR}"
 
 	if [ "${?}" = 1 ]
@@ -125,14 +148,21 @@ generate_all()
 {
 	list_configs | while read -r config
 	do
-		generate_config "$(printf '%b' "${config}" | sed -e "s|${CONFIGDIR}||g")"
+		generate_container "$(printf '%b' "${config}" | sed -e "s|${CONFIGDIR}||g")"
 	done
 }
 
+usage()
+{
+	printf '%b list-containers|list-configs|generate CONFIG-FILE|generate-all|CONTAINER-NAME ACTION\n' "${0}"
+}
+
 case "${1}" in
 	"list-containers") list_containers ;;
 	"list-configs") list_configs ;;
 	"generate-all") generate_all ;;
-	"generate") shift; generate_config "${@}" ;;
+	"generate") shift; generate_container "${@}" ;;
+	"help") usage "${0}" ;;
+	"usage") usage "${0}" ;;
 	*) exec_script "${@}" ;;
 esac

containerrc.json

@@ -16,6 +16,9 @@
 				},
 				"tag": {
 					"type": "string"
+				},
+				"command": {
+					"type": "string"
 				}
 			},
 			"required": [
@@ -52,11 +55,7 @@
 					"type": "array",
 					"items": {}
 				}
-			},
-			"required": [
-				"mode",
-				"options"
-			]
+			}
 		},
 		"dns": {
 			"type": "object",
@@ -72,11 +71,7 @@
 						}
 					]
 				}
-			},
-			"required": [
-				"search",
-				"servers"
-			]
+			}
 		},
 		"ports": {
 			"type": "object",
@@ -97,11 +92,7 @@
 						}
 					]
 				}
-			},
-			"required": [
-				"tcp",
-				"udp"
-			]
+			}
 		},
 		"env": {
 			"type": "object"
@@ -132,11 +123,7 @@
 						}
 					]
 				}
-			},
-			"required": [
-				"add",
-				"drop"
-			]
+			}
 		},
 		"accounting": {
 			"type": "object",

generate/container.py

@@ -186,6 +186,7 @@ class Memory:
         reservation = maybe_or(val, "reservation", "")
         swap = maybe_or(val, "swap", "")
         if limit == "":
+            logger.log_warning("No limit set, memory config is not needed")
             return cls("", "", "")
         return cls(limit, reservation, swap)
 
@@ -244,17 +245,26 @@ class Volume:
     """Container Volume."""
 
     name: str
-    path: str
+    path: list
 
     @classmethod
-    def from_json(cls, val: ConfigValue, logger: Log) -> list | None:
+    def from_json(cls, val: ConfigValue, logger: Log) -> list:
         """Create from JSON."""
         if val is None:
-            return None
+            return []
         if not isinstance(val, dict):
-            logger.log_warning("Volume key is present, but malformed.")
-            return None
-        return [cls(key, value) for key, value in val.items()]
+            logger.log_warning("Volume key is malformed.")
+            return []
+        return [
+            Volume.from_json_entry(key, value) for key, value in val.items()
+        ]
+
+    @classmethod
+    def from_json_entry(cls, key: str, value: str | list) -> Self:
+        """Create from JSON entry."""
+        if isinstance(value, str):
+            return cls(key, [value])
+        return cls(key, value)
 
     def is_host_volume(self) -> bool:
         """Check if this Volume is a named or a host volume."""
@@ -262,7 +272,10 @@ class Volume:
 
     def command(self) -> str:
         """Option for podman container create."""
-        return f"--volume {self.name}:{self.path}"
+        cmd = ""
+        for path in self.path:
+            cmd += f"\t--volume {self.name}:{path} \\\n"
+        return cmd
 
     def create(self) -> str:
         """Create volume, if it does not exist."""
@@ -298,17 +311,17 @@ class Secret:
 
     name: str
     secret_type: str
-    target: str
+    target: list
     options: str
 
     @classmethod
-    def from_json(cls, val: ConfigValue, logger: Log) -> list | None:
+    def from_json(cls, val: ConfigValue, logger: Log) -> list:
         """Create from JSON."""
         if val is None:
-            return None
+            return []
         if not isinstance(val, dict):
-            logger.log_warning("Secret key is present, but malformed!")
-            return None
+            logger.log_warning("Secret key is malformed!")
+            return []
         secrets = []
         for key in val:
             if not isinstance(val[key], dict):
@@ -316,26 +329,36 @@ class Secret:
                 continue
             name = key
             secret_type = maybe_or(val[key], "type", "")
-            target = maybe_or(val[key], "target", "")
+            target = maybe(val[key], "target")
+            if isinstance(target, str):
+                target = [target]
+            if not isinstance(target, list):
+                logger.log_warning(
+                        f"Secret {name} has no target and will be ignored"
+                        )
+                target = []
             options = maybe_or(val[key], "options", "")
             if options is None:
                 options = ""
-            secrets.append(
-                cls(name, str(secret_type), str(target), str(options))
-            )
+            secrets.append(cls(name, str(secret_type), target, str(options)))
 
         return secrets
 
     def command(self) -> str:
         """Option for podman container create."""
-        cmd = (
-            f"--secret {self.name},:"
-            f"type={self.secret_type},"
-            f"target={self.target}"
-        )
-        # Not a password, ruff...
-        if self.secret_type == "mount" and self.options != "":  # noqa: S105
-            cmd = f"{cmd},{self.options}"
+        cmd = ""
+        for target in self.target:
+            cmd += (
+                f"\t--secret {self.name},:"
+                f"type={self.secret_type},"
+                f"target={target}"
+            )
+            # Not a password, ruff...
+            has_option = self.secret_type == "mount"  # noqa: S105
+            has_option = has_option and self.options != ""
+            if has_option:
+                cmd = f"{cmd},{self.options}"
+            cmd += " \\\n"
 
         return cmd
 
@@ -374,22 +397,29 @@ class Environment:
         if val is None:
             return cls([], "")
         if not isinstance(val, dict):
-            logger.log_warning("Environment key is present, but malformed!")
+            logger.log_warning("Environment key is malformed!")
             return cls([], "")
         return cls([f"{key}='{value}'" for key, value in val.items()], "")
 
     def command(self) -> str:
         """Option for podman container create."""
-        return f"--env-file={self.file}"
+        if len(self.variables) == 0:
+            return ""
+        return f"\t--env-file={self.file} \\\n"
 
     def create(self) -> str:
         """Create env file."""
-        cmd = f"# Create env-file {self.file}\n"
+        cmd = ""
+        header = f"# Create env-file {self.file}\n"
+
         for var in self.variables:
             escaped_var = var.replace("'", "%b")
             cmd += f"printf '{escaped_var}\\n' \"'\" \"'\" >> '{self.file}'\n"
 
-        return cmd
+        if cmd == "":
+            return ""
+
+        return header + f"printf '\\n' > {self.file}\n" + cmd
 
     def remove(self) -> str:
         """Remove env file."""
@@ -414,31 +444,45 @@ class Ports:
         if val is None:
             return cls([], [])
         if not isinstance(val, dict):
-            logger.log_warning("Ports key is present, but malformed!")
+            logger.log_warning("Ports key is malformed!")
             return cls([], [])
         tcp_ports = maybe(val, "tcp")
         udp_ports = maybe(val, "udp")
+        if tcp_ports is None:
+            tcp_ports = []
+        if udp_ports is None:
+            udp_ports = []
+        if not isinstance(tcp_ports, list) and not isinstance(udp_ports, list):
+            logger.log_warning("Port configuration is malformed!")
+            return cls([], [])
         if not isinstance(tcp_ports, list):
-            logger.log_warning("Key tcp_ports is not an array!")
-            return cls([], [])
+            logger.log_warning("tcp_ports configuration is malformed!")
+            return cls([], udp_ports)
         if not isinstance(udp_ports, list):
-            logger.log_warning("Key udp_ports is not an array!")
-            return cls([], [])
+            logger.log_warning("udp_ports configuration is malformed!")
+            return cls(tcp_ports, [])
         return cls(tcp_ports, udp_ports)
 
     def command(self) -> str:
         """Option for podman container create."""
-        ports = ""
         seperator = " \\\n"
-        ports += seperator.join(
-            [f"\t--port {port}/tcp" for port in self.tcp_ports]
+        tcp_ports = seperator.join(
+            [f"\t--publish {port}/tcp" for port in self.tcp_ports]
         )
-        ports += seperator
-        ports += seperator.join(
-            [f"\t--port {port}/udp" for port in self.udp_ports]
+        udp_ports = seperator.join(
+            [f"\t--publish {port}/udp" for port in self.udp_ports]
         )
-        ports += seperator
-        return ports
+
+        if tcp_ports == "" and udp_ports == "":
+            return ""
+
+        if tcp_ports == "":
+            return udp_ports + seperator
+
+        if udp_ports == "":
+            return tcp_ports + seperator
+
+        return tcp_ports + seperator + udp_ports + seperator
 
 
 @dataclass
@@ -451,26 +495,31 @@ class Network:
     @classmethod
     def from_json(cls, val: ConfigValue, logger: Log) -> Self:
         """Create from JSON."""
-        if val is None or not isinstance(val, dict):
-            logger.log_error("Network configuration is missing or malformed!")
+        if val is None:
+            return cls("", [])
+
+        if not isinstance(val, dict):
+            logger.log_warning("Network configuration is malformed!")
             return cls("", [])
         mode = maybe(val, "mode")
         options = maybe(val, "options")
-        if mode is None or options is None or not isinstance(options, list):
+        if mode is None or not isinstance(mode, str):
             err = "Network configuration is missing or has malformed elements!"
             logger.log_error(err)
             return cls("", [])
-        return cls(str(mode), options)
+        if options is None or not isinstance(options, list):
+            return cls(mode, [])
+        return cls(mode, options)
 
     def command(self) -> str:
         """Option for podman container create."""
         if self.mode == "":
             return ""
-        cmd = f"--network={self.mode}"
+        cmd = f"\t--network={self.mode}"
         opts = ",".join(self.options)
         if opts != "":
             cmd += f":{opts}"
-        return cmd
+        return cmd + " \\\n"
 
 
 @dataclass
@@ -480,6 +529,7 @@ class Image:
     registry: str
     image: str
     tag: str
+    cmd: str
 
     @classmethod
     def from_json(cls, val: ConfigValue, logger: Log) -> Self | None:
@@ -490,10 +540,13 @@ class Image:
         registry = maybe_or(val, "registry", "")
         image = maybe_or(val, "image", "")
         tag = maybe_or(val, "tag", "")
-        return cls(str(registry), str(image), str(tag))
+        cmd = maybe_or(val, "command", "")
+        return cls(registry, image, tag, cmd)
 
     def command(self) -> str:
         """Option for podman container create."""
+        if self.cmd != "":
+            return f"{self.registry}/{self.image}:{self.tag} {self.cmd}"
         return f"{self.registry}/{self.image}:{self.tag}"
 
 
@@ -505,13 +558,13 @@ class Capability:
     mode: str
 
     @classmethod
-    def from_json(cls, val: ConfigValue, logger: Log) -> list | None:
+    def from_json(cls, val: ConfigValue, logger: Log) -> list:
         """Create from JSON."""
-        if val is None or not isinstance(val, dict):
-            logger.log_warning(
-                "Capabilities key is either missing or malformed!"
-            )
-            return None
+        if val is None:
+            return []
+        if not isinstance(val, dict):
+            logger.log_warning("Capabilities key is malformed!")
+            return []
         add = [cls(value, "add") for value in val["add"]]
         drop = [cls(value, "drop") for value in val["drop"]]
         return add + drop
@@ -531,49 +584,133 @@ class Dns:
     @classmethod
     def from_json(cls, val: ConfigValue, logger: Log) -> Self:
         """Create from JSON."""
-        if val is None or not isinstance(val, dict):
-            logger.log_error("DNS Key is either missing or malformed!")
+        if val is None:
+            return cls([], "")
+
+        if not isinstance(val, dict):
+            logger.log_warning("DNS Key is malformed!")
             return cls([], "")
         search = maybe_or(val, "search", "")
         servers = maybe(val, "servers")
         if not isinstance(servers, list):
-            logger.log_error("Servers key is not an array!")
-            return cls([], "")
-        return cls(servers, str(search))
+            logger.log_warning("Servers key is not an array!")
+            return cls([], search)
+        return cls(servers, search)
 
     def command(self) -> str:
         """Option for podman container create."""
         if len(self.servers) == 0 and self.search == "":
             return ""
         if len(self.servers) == 0:
-            return f"--dns-search={self.search}"
+            return f"\t--dns-search={self.search} \\\n"
         if self.search == "":
-            return f"--dns={','.join(self.servers)}"
+            return f"\t--dns={','.join(self.servers)} \\\n"
 
-        cmd = f"--dns-search={self.search} \\\n\t--dns="
+        cmd = f"\t--dns-search={self.search} \\\n\t--dns="
         cmd += ",".join(self.servers)
 
         return cmd
 
 
+@dataclass
+class ContainerOptions:
+    """Container-Meta settings."""
+
+    privileged: bool = False
+    read_only: bool = False
+    replace: bool = False
+    restart: str = "no"
+    pull_policy: str = "always"
+    timezone: str = "local"
+    is_valid: bool = False
+
+    @classmethod
+    def from_json(cls, val: ConfigValue, logger: Log) -> Self:
+        """Create from JSON."""
+        if val is None:
+            # Should not happen!
+            return cls()
+        if not isinstance(val, dict):
+            logger.log_error("Container config is invalid!")
+            return cls()
+
+        privileged = maybe_or(val, "privileged", _or=False)
+        read_only = maybe_or(val, "read_only", _or=False)
+        replace = maybe_or(val, "replace", _or=False)
+        restart = maybe_or(val, "restart", "no")
+        pull_policy = maybe_or(val, "pull_policy", "always")
+        timezone = maybe_or(val, "timezone", "local")
+
+        return cls(
+            privileged,
+            read_only,
+            replace,
+            restart,
+            pull_policy,
+            timezone,
+            is_valid=True,
+        )
+
+    def command(self) -> str:
+        """Option for podman conainter create."""
+        cmd = ""
+        if self.privileged:
+            cmd += "\t--privileged \\\n"
+        if self.read_only:
+            cmd += "\t--read-only \\\n"
+        if self.replace:
+            cmd += "\t--replace \\\n"
+        if self.restart != "":
+            cmd += f"\t--restart={self.restart} \\\n"
+        if self.pull_policy != "":
+            cmd += f"\t--pull-policy={self.pull_policy} \\\n"
+        if self.timezone != "":
+            cmd += f"\t--tz={self.timezone} \\\n"
+        return ""
+
+
+@dataclass
+class ContainerNetwork:
+    """Wrapper for Network, Dns and Ports."""
+
+    network: Network
+    dns: Dns
+    ports: Ports
+
+    @classmethod
+    def from_json(cls, json: ConfigValue, logger: Log) -> Self:
+        """Create from JSON."""
+        network_config = maybe(json, "network")
+        dns_config = maybe(json, "dns")
+        ports_config = maybe(json, "ports")
+
+        network = Network.from_json(network_config, logger)
+        dns = Dns.from_json(dns_config, logger)
+        ports = Ports.from_json(ports_config, logger)
+
+        return cls(network, dns, ports)
+
+    def command(self) -> str:
+        """Option for podman container create."""
+        cmd = ""
+        cmd += self.network.command()
+        cmd += self.dns.command()
+        cmd += self.ports.command()
+
+        return cmd
+
+
 class Container:
     """Container."""
 
     name: str
     image: Image
-    privileged: bool
-    read_only: bool
-    replace: bool
-    restart: str
-    pull_policy: str
-    timezone: str
-    network: Network
-    dns: Dns
-    ports: Ports
-    env: Environment | None
-    secrets: list | None
-    volumes: list | None
-    capabilities: list | None
+    ct_opts: ContainerOptions
+    ct_network: ContainerNetwork
+    env: Environment
+    secrets: list
+    volumes: list
+    capabilities: list
     accounting: Accounting
 
     def __init__(self, json: dict, logger: Log | None = None) -> None:
@@ -583,20 +720,30 @@ class Container:
         name = maybe(json, "name")
         if name is None:
             logger.log_error("No container name set, aborting!")
-            return
+            raise ConfigError("Container has no name")
         image = maybe(json, "image")
         if image is None:
             logger.log_error("No image set, aborting!")
-            return
-        privileged = maybe(json, "privileged")
-        read_only = maybe(json, "read_only")
-        replace = maybe(json, "replace")
-        pull_policy = maybe_or(json, "pull_policy", "always")
-        restart = maybe_or(json, "restart", "no")
-        timezone = maybe_or(json, "timezone", "local")
-        network = maybe(json, "network")
-        dns = maybe(json, "dns")
-        ports = maybe(json, "ports")
+            raise ConfigError("Container has no image")
+
+        self.image = Image.from_json(image, logger)
+        image_valid = True
+        if self.image.image == "":
+            logger.log_error("Image has no image set!")
+            image_valid = False
+        if self.image.registry == "":
+            logger.log_error("Image has no registry set!")
+            image_valid = False
+        if self.image.tag == "":
+            logger.log_error("Image has no tag set!")
+            image_valid = False
+        if not image_valid:
+            raise ConfigError("Image is missing required keys!")
+
+        self.name = name
+        ct_opts = ContainerOptions.from_json(json, logger)
+        if not ct_opts.is_valid:
+            raise ConfigError("Config seems to be invalid?")
         env = maybe(json, "env")
         secrets = maybe(json, "secrets")
         volumes = maybe(json, "volumes")
@@ -604,18 +751,11 @@ class Container:
         accounting = maybe(json, "accounting")
         self.name = str(name)
         self.image = Image.from_json(image, logger)
-        self.privileged = privileged is not None and bool(privileged)
-        self.read_only = read_only is not None and bool(read_only)
-        self.replace = replace is not None and bool(replace)
-        self.pull_policy = str(pull_policy)
-        self.restart = str(restart)
-        self.timezone = str(timezone)
-        self.network = Network.from_json(network, logger)
-        self.dns = Dns.from_json(dns, logger)
-        self.ports = Ports.from_json(ports, logger)
+        self.ct_opts = ct_opts
+        self.ct_network = ContainerNetwork.from_json(json, logger)
         self.env = Environment.from_json(env, logger)
-        self.env.file = "/var/lib/containerctl/containers/"
-        self.env.file += f"{self.name}/environment"
+        self.env.file = "/var/lib/containerctl/environment-files/"
+        self.env.file += f"{self.name}"
         self.secrets = Secret.from_json(secrets, logger)
         self.volumes = Volume.from_json(volumes, logger)
         self.capabilities = Capability.from_json(capabilities, logger)
@@ -648,26 +788,15 @@ class Container:
     def create_container(self) -> str:
         """Generate podman container create command."""
         cmd = f"# Create container {self.name}\n"
-        cmd += "podman container crate \\\n"
+        cmd += "podman container create \\\n"
         cmd += f"\t--name={self.name} \\\n"
-        if self.privileged:
-            cmd += "\t--privileged \\\n"
-        if self.replace:
-            cmd += "\t--replace \\\n"
-        if self.read_only:
-            cmd += "\t--read-only \\\n"
-        cmd += f"\t--restart={self.restart} \\\n"
-        cmd += f"\t--pull={self.pull_policy} \\\n"
-        cmd += f"\t--tz={self.timezone} \\\n"
-        cmd += f"\t{self.network.command()} \\\n"
-        cmd += f"\t{self.dns.command()} \\\n"
-        cmd += f"{self.ports.command()}"
-        if self.env is not None:
-            cmd += f"\t{self.env.command()} \\\n"
+        cmd += f"{self.ct_opts.command()}"
+        cmd += f"{self.ct_network.command()}"
+        cmd += f"{self.env.command()}"
         for secret in self.secrets:
-            cmd += f"\t{secret.command()} \\\n"
+            cmd += f"{secret.command()}"
         for volume in self.volumes:
-            cmd += f"\t{volume.command()} \\\n"
+            cmd += f"{volume.command()}"
         for capability in self.capabilities:
             cmd += f"\t{capability.command()} \\\n"
         cmd += f"{self.accounting.command()}"

generate/generate.py

@@ -14,7 +14,7 @@ from pathlib import Path
 from container import ConfigError, Container
 from log import Log
 
-GENERATE_VERSION = "0.0.4"
+GENERATE_VERSION = "0.0.15"
 HEADER = f"""#!/bin/sh
 # This script was generated by containerctl v{GENERATE_VERSION}
 # Report bugs with _this script_ to <tenno+containerctl@suij.in>
@@ -76,10 +76,12 @@ def main() -> None:
     if len(sys.argv) > log_threshold:
         base = sys.argv[3]
     logger = Log(log_file)
-    data = load_container_config(Path(config_file), logger)
+    conf = Path(config_file)
+    data = load_container_config(conf, logger)
     if data is None:
-        logger.log_error(f"{config_file} is invalid, aborting!")
+        logger.log_error(f"{conf.name} is invalid, aborting!")
         sys.exit(1)
+    logger.set_prefix(conf.name)
     ct = create_container_from_config(data, logger)
     if ct is None:
         sys.exit(1)
@@ -109,7 +111,7 @@ def main() -> None:
             script_content += ct.create_environment()
         script_content += method()
         if script_content == "":
-            script_content = "true"
+            script_content = "true\n"
         with s.open("w+", encoding="utf-8") as f:
             f.write(HEADER)
             f.write(script_content)

generate/log.py

@@ -15,6 +15,7 @@ class Log:
 
     messages: list = []
     logfile: Path
+    prefix: str = ""
 
     def __init__(self, path: str) -> None:
         """Init for Log."""
@@ -25,15 +26,19 @@ class Log:
     def log_error(self, msg: str) -> None:
         """Log an error."""
         now = self.timestamp()
-        prefix = "EE"
-        log_message = f"[{now}] ({prefix}) {msg}"
+        prefix = "(EE)"
+        if self.prefix != "":
+            prefix += f" {self.prefix}:"
+        log_message = f"[{now}] {prefix} {msg}"
         self.write_message(log_message)
 
     def log_warning(self, msg: str) -> None:
         """Log a warning."""
         now = self.timestamp()
-        prefix = "WW"
-        log_message = f"[{now}] ({prefix}) {msg}"
+        prefix = "(WW)"
+        if self.prefix != "":
+            prefix += f" {self.prefix}:"
+        log_message = f"[{now}] {prefix} {msg}"
         self.write_message(log_message)
 
     def write_message(self, msg: str) -> None:
@@ -49,3 +54,7 @@ class Log:
         return datetime.datetime.now(tz=datetime.UTC).strftime(
             "%Y-%m-%d %H:%M:%S",
         )
+
+    def set_prefix(self, prefix: str) -> None:
+        """Set a prefix."""
+        self.prefix = prefix