Small changes

cli.py

@@ -0,0 +1,378 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+import argparse
+import dataclasses
+import sys
+from os import path
+from pathlib import Path
+import os
+import time
+from typing import Any, DefaultDict, Iterable, Mapping
+from jinja2 import Template
+import itertools
+import subprocess as sub
+import shutil
+import string
+import secrets
+from dataclasses import dataclass
+
+TEMPLATE_DIR = "./templates"
+
+
+#region util
+def gen_pass(pass_length: int = 20) -> str:
+    """Generates a simple password with the provided length
+
+    Args:
+        pass_length (int, optional): Length of password. Defaults to 20.
+
+    Returns:
+        str: The generated password.
+    """
+    alphabet = string.ascii_letters + string.digits
+    password = "".join(secrets.choice(alphabet) for _ in range(pass_length))
+    return password
+
+
+def check_positive(value: str) -> int:
+    """`argparse` type helper to check whether a given input is a positive integer. 
+
+    Args:
+        value (str): Input to validate
+
+    Raises:
+        Exception: Input is neither a decimal or positive
+
+    Returns:
+        int: The parsed input if valid
+    """
+    ivalue = int(value)
+    if ivalue < 0:
+        raise Exception(f"Supplied number must be >= 0")
+    return ivalue
+
+
+def encode_member(member: str, mapping: Mapping[str, Any]) -> str:
+    """Encodes the member-entry of an inventory file with additional mappings.
+
+    Args:
+        member (str)
+        mapping (Mapping[str, Any])
+
+    Returns:
+        str: member with mapping encoded
+    """
+    return member + " " + " ".join([f"{k}={v}" for k, v in mapping.items()])
+
+
+def iter_ips(ip_format: str, start_octet: int):
+    """Simple iterator for generating ip's
+
+    Args:
+        ip_format (str)
+        start_octet (int)
+
+    Yields:
+        Yeah idk too lazy too look up what the type annotation for a generator is
+    """
+    ip_int = start_octet
+    ip_fmt = ip_format
+    while ip_int < 255:
+        yield ip_fmt.format(ip_int)
+        ip_int += 1
+
+
+def copy_template(src: str, dest: str, mapping: Mapping[str, Any] = {}):
+    """Templates and writes a template file using Jinja as templating engine.
+
+    Args:
+        src (str): content of the file
+        dest (str): place to write templated file to
+        mapping (Mapping[str, Any], optional): datamapping. Defaults to {}.
+    """
+    c = Path(src).read_text()
+    t: Template = Template(c)
+    r = t.render(mapping)
+    Path(dest).write_text(r)
+
+
+#endregion
+
+
+#region models
+@dataclass
+class MachineResources:
+    cpus: int
+    mem: int
+
+    @staticmethod
+    def from_prompt() -> "MachineResources":
+        """Generate `MachineResources` from prompt.
+
+        Raises:
+            Exception
+            Exception
+
+        Returns:
+            MachineResources
+        """
+        cpus = input(
+            "How many processors would you like to assign (default=1): ")
+        if not cpus:
+            cpus = "1"
+
+        if not cpus.isdigit() or int(cpus) < 0:
+            raise Exception("Expected a postive amount of processors")
+
+        mem = input(
+            "How many megabytes of RAM would you like to assign (default=1024): "
+        )
+        if not mem:
+            mem = "1024"
+
+        if not mem.isdigit() or int(mem) < 0:
+            raise Exception("Expected a postive amount of memory")
+
+        return MachineResources(cpus=int(cpus), mem=int(mem))
+
+
+class InventoryWriter:
+    """
+    Helper class for generating Ansible inventory files.
+    """
+
+    def __init__(self, location: str) -> None:
+        self._file_handle = Path(location)
+        self._groups: dict[str, set[str]] = DefaultDict(set)
+
+    def add(self, name: str, members: Iterable[str]):
+        self._groups[name] |= set(members)
+
+    def _build_group(self, name: str, members: set[str]):
+        fmt = f"[{name}]\n" + "\n".join(members)
+        return fmt
+
+    def flush(self):
+        txt = ""
+        for name, members in self._groups.items():
+            txt += self._build_group(name, members) + "\n\n"
+        self._file_handle.write_text(txt, encoding="utf8")
+
+
+#endregion
+
+
+#region CLI positional flows
+def list_envs(args: argparse.Namespace):
+    try:
+        customer_path = path.join("customers", args.customer_name, "envs")
+        print(" ".join(os.listdir(customer_path)))
+    except FileNotFoundError:
+        print(f"Customer `{args.customer_name}` does not exist.")
+
+
+def delete_env(args: argparse.Namespace):
+    for env in args.env_names:
+        env_path = path.join("customers", args.customer_name, "envs", env)
+        sub.call(["vagrant", "destroy", "-f"], cwd=env_path)
+        shutil.rmtree(env_path)
+        print(f"Deleted `{env}` from customer `{ args.customer_name}`")
+
+
+def recover_env(args: argparse.Namespace):
+    for env in args.env_names:
+        env_path = path.join("customers", args.customer_name, "envs", env)
+        sub.call(["vagrant", "up"], cwd=env_path)
+
+        # Artificial sleep waiting for sshd on VM to correctly start
+        print("Waiting on virtual machines...")
+        time.sleep(5)
+
+        sub.call(["ansible-playbook", "../../../../site.yml"], cwd=env_path)
+        print(f"Recovered `{env}` from customer `{ args.customer_name}`")
+
+
+def create_env(args: argparse.Namespace):
+    """
+    Managing environments works in a declarative way and thus it can
+    also be used for updating.
+    """
+    if (args.num_nginx_web + args.num_nginx_lb + args.num_postgres) == 0:
+        raise Exception("At least one item should be deployed")
+
+    env_path = path.join("customers", args.customer_name, "envs",
+                         args.env_name)
+    Path(env_path).mkdir(exist_ok=True, parents=True)
+    vagrant_mapping: dict[str, Any] = {
+        "webserver_specs": None,
+        "loadbalancers_specs": None,
+        "postgres_specs": None,
+        "num_webserver": args.num_nginx_web,
+        "num_loadbalancers": args.num_nginx_lb,
+        "num_postgres": args.num_postgres,
+        "env": args.env_name,
+        "customer_name": args.customer_name,
+        "ip_int": args.ip_int,
+        "ip_format": args.ip_format.replace("{}", "%d"),
+    }
+
+    if args.num_nginx_web > 0:
+        print("\nNginx webserver resources:")
+        web_specs = MachineResources.from_prompt()
+        vagrant_mapping["webserver_specs"] = dataclasses.asdict(web_specs)
+
+    if args.num_nginx_lb > 0:
+        print("\nNginx loadbalancer resources: ")
+        lb_specs = MachineResources.from_prompt()
+        vagrant_mapping["loadbalancers_specs"] = dataclasses.asdict(lb_specs)
+
+    if args.num_postgres > 0:
+        print("\nPostgresql machine resources: ")
+        psql_specs = MachineResources.from_prompt()
+        vagrant_mapping["postgres_specs"] = dataclasses.asdict(psql_specs)
+
+    # Template `ansible.cfg`
+    src = path.join(TEMPLATE_DIR, "ansible.cfg.template")
+    dest = path.join(env_path, "ansible.cfg")
+    copy_template(src=src, dest=dest)
+
+    # Create inventory file
+    inv_path = path.join(env_path, "inventory")
+    iw = InventoryWriter(inv_path)
+    ip_generator = iter_ips(args.ip_format, args.ip_int)
+
+    web_ips = itertools.islice(ip_generator, args.num_nginx_web)
+    iw.add("webserver", web_ips)
+
+    lb_ips = itertools.islice(ip_generator, args.num_nginx_lb)
+    iw.add("loadbalancer", lb_ips)
+
+    def psql_gen_pass(x: str) -> str:
+        return encode_member(x, {"psql_pass": gen_pass()})
+
+    psql_ips = list(itertools.islice(ip_generator, args.num_postgres))
+    psql_ips = map(psql_gen_pass, psql_ips)
+    iw.add("postgresql", psql_ips)
+
+    iw.flush()
+
+    # Template `Vagrantfile`
+    src = path.join(TEMPLATE_DIR, "Vagrantfile.template")
+    dest = path.join(env_path, "Vagrantfile")
+    should_reload = Path(dest).exists()
+    copy_template(src=src, dest=dest, mapping=vagrant_mapping)
+
+    # Generate .ssh if it doesn't exist already
+    ssh_dir = path.join(env_path, ".ssh")
+    Path(ssh_dir).mkdir(exist_ok=True)
+    rsa_path = path.join(ssh_dir, "id_rsa")
+    if not Path(rsa_path).exists():
+        print(end="\n")
+        sub.call([
+            "ssh-keygen",
+            "-t",
+            "rsa",
+            "-b",
+            "2048",
+            "-f",
+            rsa_path,
+        ])
+
+    # Provision and configure machines
+    # Create VM's that do not exist yet
+    sub.call(["vagrant", "up"], cwd=env_path)
+
+    # Update VM's that already existed
+    if should_reload:
+        sub.call(["vagrant", "reload", "--provision"], cwd=env_path)
+
+    # Artificial sleep waiting for sshd on VM to correctly start
+    print("Waiting on virtual machines...")
+    time.sleep(5)
+
+    sub.call(["ansible-playbook", "../../../../site.yml"], cwd=env_path)
+
+
+#endregion
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser()
+    sub_parser = parser.add_subparsers()
+
+    # CLI definition for positional arg "list"
+    list_parser = sub_parser.add_parser(
+        "list", help="list customer-owned environments")
+    list_parser.add_argument("customer_name",
+                             type=str,
+                             help="name of the customer")
+    list_parser.set_defaults(func=list_envs)
+
+    # CLI definition for positional arg "create"
+    cenv_parser = sub_parser.add_parser("create",
+                                        help="create/update an environment")
+    cenv_parser.add_argument("customer_name",
+                             type=str,
+                             help="name of the customer")
+    cenv_parser.add_argument("env_name",
+                             type=str,
+                             help="name of the environment")
+    cenv_parser.add_argument(
+        "--num-postgres",
+        type=check_positive,
+        help="number of postgres databases",
+        default=0,
+    )
+    cenv_parser.add_argument(
+        "--num-nginx-web",
+        type=check_positive,
+        help="number of nginx webservers",
+        default=0,
+    )
+    cenv_parser.add_argument(
+        "--num-nginx-lb",
+        type=check_positive,
+        help="number of nginx loadbalancers",
+        default=0,
+    )
+    cenv_parser.add_argument("--ip-format",
+                             type=str,
+                             help="format of ip",
+                             default="192.168.56.{}")
+    cenv_parser.add_argument("--ip-int",
+                             type=check_positive,
+                             help="4th octet to start at",
+                             default="10")
+    cenv_parser.set_defaults(func=create_env)
+
+    # CLI definition for positional arg "delete"
+    denv_parser = sub_parser.add_parser("delete", help="delete an environment")
+    denv_parser.add_argument("customer_name",
+                             type=str,
+                             help="name of the customer")
+    denv_parser.add_argument("env_names",
+                             type=str,
+                             nargs="+",
+                             help="name of one or more environments")
+    denv_parser.set_defaults(func=delete_env)
+
+    # CLI definition for positional arg "recover"
+    denv_parser = sub_parser.add_parser("recover",
+                                        help="attempts to recover an env")
+    denv_parser.add_argument("customer_name",
+                             type=str,
+                             help="name of the customer")
+    denv_parser.add_argument("env_names",
+                             type=str,
+                             nargs="+",
+                             help="name of one or more environments")
+    denv_parser.set_defaults(func=recover_env)
+
+    # Parse args
+    args = parser.parse_args(sys.argv[1:])
+    args.func(args)
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

install_deps.sh

@@ -1,4 +1,4 @@
 #!/usr/bin/env bash
 sudo apt update --yes && sudo apt upgrade --yes
 sudo apt install --yes virtualbox vagrant ansible
-ansible-galaxy install -r ./requirements.yml
+ansible-galaxy collection install -r requirements.yml

requirements.yml

@@ -1,4 +1,4 @@
 ---
 # ansible-galaxy requirements for this repository
 collections:
-  - 'community.postgresql'
+  - community.postgresql

service.py

@@ -1,255 +1,225 @@
 #!/usr/bin/env python3
 from __future__ import annotations
-import argparse
-import dataclasses
-import sys
-from os import path
 from pathlib import Path
-import os
-import time
-from typing import Any, Callable, DefaultDict, Iterable, Mapping
-from jinja2 import Template
-import itertools
+from os import path
 import subprocess as sub
-import shutil
-import string
-import secrets
-from dataclasses import dataclass
+import re
+from typing import Any, Callable
+from enum import Enum
+
+P_BANNER = """
+██╗    ██╗███████╗██╗     ██╗  ██╗ ██████╗ ███╗   ███╗
+██║    ██║██╔════╝██║     ██║ ██╔╝██╔═══██╗████╗ ████║
+██║ █╗ ██║█████╗  ██║     █████╔╝ ██║   ██║██╔████╔██║
+██║███╗██║██╔══╝  ██║     ██╔═██╗ ██║   ██║██║╚██╔╝██║
+╚███╔███╔╝███████╗███████╗██║  ██╗╚██████╔╝██║ ╚═╝ ██║
+ ╚══╝╚══╝ ╚══════╝╚══════╝╚═╝  ╚═╝ ╚═════╝ ╚═╝     ╚═╝
+"""
+
+P_OPTIONS = """
+Opties:
+0) Afsluiten
+1) Maak/Wijzig omgeving(en)
+2) Vernietig omgeving(en)
+3) Recover omgeving(en)
+4) List omgeving(en)
+"""
+class PortalOptions(Enum):
+    EXIT = "0"
+    CREATE = "1"
+    DESTROY = "2"
+    RECOVER = "3"
+    LIST = "4"
 
 
-TEMPLATE_DIR = "./templates"
+RE_TEXT = re.compile(r"^\w+$")
+RE_NUM = re.compile(r"^\d+$")
+RE_ANY = re.compile(r".+")
 
 
-@dataclass
-class MachineResources:
-    cpus: int
-    mem: int
+class Prompter:
+
+    def __init__(self, ps1: str = "") -> None:
+        self.ps1 = ps1
+
+    def _build_prompt(self, prompt: str) -> str:
+        return self.ps1 + prompt
+
+    def take_input(self,
+                   prompt: str,
+                   pattern: re.Pattern[Any],
+                   default: str = "") -> str:
+        prompt = self._build_prompt(prompt)
+        return Prompter.input(prompt, lambda x: bool(pattern.match(x)),
+                              default)
+
+    def take_choice(self, prompt: str, options: list[str]) -> str:
+        prompt = self._build_prompt(prompt)
+        return Prompter.input(prompt, lambda x: x in options)
+
+    def take_confirmation(self, prompt: str, default: str = "y") -> bool:
+        prompt = self._build_prompt(prompt)
+        i = Prompter.input(prompt, lambda x: x.lower() in ["y", "n"], default=default)   
+        return i == "y"
 
     @staticmethod
-    def from_prompt() -> "MachineResources":
-        cpus = input("How many processors would you like to assign (default=1): ")
-        if not cpus:
-            cpus = "1"
+    def input(prompt: str,
+              validate: Callable[[str], bool],
+              default: str = "") -> str:
+        while True:
+            i = input(prompt)
+            if i == "":
+                i = default
+            if validate(i):
+                return i
 
-        if not cpus.isdigit() or int(cpus) < 0:
-            raise Exception("Expected a postive amount of processors")
+def get_env_list(customer: str) -> list[str]:
+    """Fetches and parses a list of a customer's environments
 
-        mem = input(
-            "How many megabytes of RAM would you like to assign (default=1024): "
-        )
-        if not mem:
-            mem = "1024"
+    Args:
+        customer (str): The customer to fetch environments from
 
-        if not mem.isdigit() or int(mem) < 0:
-            raise Exception("Expected a postive amount of memory")
-
-        return MachineResources(cpus=int(cpus), mem=int(mem))
-
-
-def gen_pass() -> str:
-    alphabet = string.ascii_letters + string.digits
-    password = "".join(secrets.choice(alphabet) for _ in range(20))
-    return password
-
-
-def check_positive(value: str):
-    ivalue = int(value)
-    if ivalue <= 0:
-        raise Exception("Supplied number must be >= 0")
-    return ivalue
-
-
-def encode_member(member: str, mapping: Mapping[str, Any]) -> str:
-    return member + " " + " ".join([f"{k}={v}" for k, v in mapping.items()])
-
-
-def iter_ips(ip_format: str, start_octet: int):
-    ip_int = start_octet
-    ip_fmt = ip_format
-    while ip_int < 255:
-        yield ip_fmt.format(ip_int)
-        ip_int += 1
-
-
-class InventoryWriter:
-    def __init__(self, location: str) -> None:
-        self._file_handle = Path(location)
-        self._groups: dict[str, set[str]] = DefaultDict(set)
-
-    def add(self, name: str, members: Iterable[str]):
-        self._groups[name] |= set(members)
-
-    def _build_group(self, name: str, members: set[str]):
-        fmt = f"[{name}]\n" + "\n".join(members)
-        return fmt
-
-    def flush(self):
-        txt = ""
-        for name, members in self._groups.items():
-            txt += self._build_group(name, members) + "\n\n"
-        self._file_handle.write_text(txt, encoding="utf8")
-
-
-def copy_template(src: str, dest: str, mapping: Mapping[str, Any] = {}):
-    c = Path(src).read_text()
-    t: Template = Template(c)
-    r = t.render(mapping)
-    Path(dest).write_text(r)
-
-
-def list_envs(args: argparse.Namespace):
-    try:
-        customer_path = path.join("customers", args.customer_name, "envs")
-        print(" ".join(os.listdir(customer_path)))
-    except FileNotFoundError:
-        raise Exception(f"Customer `{args.customer_name}` does not exist.")
-
-
-def delete_env(args: argparse.Namespace):
-    for env in args.env_names:
-        env_path = path.join("customers", args.customer_name, "envs", env)
-        sub.call(["vagrant", "destroy", "-f"], cwd=env_path)
-        shutil.rmtree(env_path)
-        print(f"Deleted `{env}` from customer `{ args.customer_name}`")
-
-
-def create_env(args: argparse.Namespace):
-    if (args.num_nginx_web + args.num_nginx_lb + args.num_postgres) == 0:
-        raise Exception("At least one item should be deployed")
-
-    env_path = path.join("customers", args.customer_name, "envs", args.env_name)
-    Path(env_path).mkdir(exist_ok=True, parents=True)
-
-    web_specs = None
-    if args.num_nginx_web > 0:
-        print("\nNginx webserver resources:")
-        web_specs = MachineResources.from_prompt()
-
-    lb_specs = None
-    if args.num_nginx_lb > 0:
-        print("\nNginx loadbalancer resources: ")
-        lb_specs = MachineResources.from_prompt()
-
-    psql_specs = None
-    if args.num_postgres > 0:
-        print("\nPostgresql machine resources: ")
-        psql_specs = MachineResources.from_prompt()
-
-    # Template `ansible.cfg`
-    src = path.join(TEMPLATE_DIR, "ansible.cfg.template")
-    dest = path.join(env_path, "ansible.cfg")
-    copy_template(src=src, dest=dest)
-
-    # Create inventory file
-    inv_path = path.join(env_path, "inventory")
-    iw = InventoryWriter(inv_path)
-    ip_generator = iter_ips(args.ip_format, args.ip_int)
-
-    web_ips = itertools.islice(ip_generator, args.num_nginx_web)
-    iw.add("webserver", web_ips)
-
-    lb_ips = itertools.islice(ip_generator, args.num_nginx_lb)
-    iw.add("loadbalancer", lb_ips)
-
-    psql_gen_pass: Callable[[str], str] = lambda x: encode_member(
-        x, {"psql_pass": gen_pass()}
-    )
-
-    psql_ips = list(itertools.islice(ip_generator, args.num_postgres))
-    psql_ips = map(psql_gen_pass, psql_ips)
-    iw.add("postgresql", psql_ips)
-
-    iw.flush()
-
-    # Template `Vagrantfile`
-    src = path.join(TEMPLATE_DIR, "Vagrantfile.template")
-    dest = path.join(env_path, "Vagrantfile")
-
-    mapping = {
-        "env": args.env_name,
-        "customer_name": args.customer_name,
-        "ip_int": args.ip_int,
-        "ip_format": args.ip_format.replace("{}", "%d"),
-        "num_webserver": args.num_nginx_web,
-        "num_loadbalancers": args.num_nginx_lb,
-        "num_postgres": args.num_postgres,
-        "webserver_specs": dataclasses.asdict(web_specs),
-        "loadbalancers_specs": dataclasses.asdict(lb_specs),
-        "postgres_specs": dataclasses.asdict(psql_specs),
-    }
-    copy_template(src=src, dest=dest, mapping=mapping)
-
-    # Generate .ssh
-    ssh_dir = path.join(env_path, ".ssh")
-    Path(ssh_dir).mkdir(exist_ok=True)
-    rsa_path = path.join(ssh_dir, "id_rsa")
-    if not Path(rsa_path).exists():
-        print(end="\n")
-        ssh_key_cmd = [
-            "ssh-keygen",
-            "-t",
-            "rsa",
-            "-b",
-            "2048",
-            "-f",
-            rsa_path,
-        ]
-        sub.call(ssh_key_cmd)
-
-    # Provision and configure machines
-    sub.call(["vagrant", "up"], cwd=env_path)
-    print("Waiting on virtual machines...")
-    time.sleep(5)
-    sub.call(["ansible-playbook", "../../../../site.yml"], cwd=env_path)
+    Returns:
+        list[str]: The parsed environments
+    """
+    return sub.check_output(["python3", "cli.py", "list",
+                             customer]).decode().strip("\n").split(" ")
 
 
 def main() -> int:
-    parser = argparse.ArgumentParser()
-    sub_parser = parser.add_subparsers()
+    print(P_BANNER)
+    customer_name = Prompter.input("Wat is uw naam: ",
+                                   lambda x: bool(RE_TEXT.match(x)))
+    """
+    Ensures the necessary customer setup.
     
-    list_parser = sub_parser.add_parser("list", help="list customer-owned environments")
-    list_parser.add_argument("customer_name", type=str, help="name of the customer")
-    list_parser.set_defaults(func=list_envs)
+    NOTE: The customer and the `envs` directory inside of it never get removed.
+    """
+    envs_dir = path.join("customers", customer_name, "envs")
+    Path(envs_dir).mkdir(parents=True, exist_ok=True)
 
-    cenv_parser = sub_parser.add_parser("create", help="create a new environment")
-    cenv_parser.add_argument("customer_name", type=str, help="name of the customer")
-    cenv_parser.add_argument("env_name", type=str, help="name of the environment")
-    cenv_parser.add_argument(
-        "--num-postgres",
-        type=check_positive,
-        help="number of postgres databases",
-        default=0,
-    )
-    cenv_parser.add_argument(
-        "--num-nginx-web",
-        type=check_positive,
-        help="number of nginx webservers",
-        default=0,
-    )
-    cenv_parser.add_argument(
-        "--num-nginx-lb",
-        type=check_positive,
-        help="number of nginx loadbalancers",
-        default=0,
-    )
-    cenv_parser.add_argument(
-        "--ip-format", type=str, help="format of ip", default="192.168.56.{}"
-    )
-    cenv_parser.add_argument(
-        "--ip-int", type=check_positive, help="4th octet to start at", default=10
-    )
-    cenv_parser.set_defaults(func=create_env)
+    p = Prompter(ps1=f"{customer_name} > ")
+    while True:
+        print(P_OPTIONS)
+        choice = p.take_input("Keuze: ", RE_ANY)
+        print(end="\n")
 
-    denv_parser = sub_parser.add_parser("delete", help="delete an environment")
-    denv_parser.add_argument("customer_name", type=str, help="name of the customer")
-    denv_parser.add_argument(
-        "env_names", type=str, nargs="+", help="name of one or more environments"
-    )
+        if choice == PortalOptions.EXIT.value:
+            """
+            Used to break out of the loop and exit the portal.
+            """
+            break
 
-    denv_parser.set_defaults(func=delete_env)
+        if choice == PortalOptions.CREATE.value:
+            """
+            Used to either update or create an environment.
+            """
+            envs = get_env_list(customer_name)
+            print(
+                f"NOTE: Kies een albestaande omgevingen {envs} of iets nieuws..."
+            )
+            fmt = "Omgevingsnaam: "
+            env_name = p.take_input(fmt, RE_TEXT)
+
+            # Loop until customer has confirmed their desired combination of machines
+            while True:
+                templates = ["production", "acceptance", "test", "custom"]
+                fmt = f"Het type omgeving {templates}: "
+                template_name = p.take_choice(fmt, templates)
+                if template_name == "custom":
+                    """
+                    Asks for all machine's individually
+                    """
+                    fmt = "Aantal nginx webservers (default=1): "
+                    amnt_nginx_web = p.take_input(fmt, RE_NUM, default="1")
+
+                    fmt = "Aantal nginx loadbalancers (default=1): "
+                    amnt_nginx_lb = p.take_input(fmt, RE_NUM, default="1")
+
+                    fmt = "Aantal postgres instances (default=1): "
+                    amnt_psql = p.take_input(fmt, RE_NUM, default="1") 
+                elif template_name == "production":
+                    amnt_nginx_web = "2"
+                    amnt_nginx_lb = "1"
+                    amnt_psql = "1"
+                    
+                elif template_name == "acceptance":
+                    amnt_nginx_web = "1"
+                    amnt_nginx_lb = "0"
+                    amnt_psql = "1"
+                # elif template_name == "test":
+                else:
+                    amnt_nginx_web = "1"
+                    amnt_nginx_lb = "0"
+                    amnt_psql = "0"
+                
+                # TODO: migrate different machine types to a dict model
+                print(end="\n")
+                print("Deze omgeving bevat:")
+                if amnt_nginx_web > "0":
+                    print(f" - {amnt_nginx_web} Nginx webserver(s)")
+                
+                if amnt_nginx_lb > "0":
+                    print(f" - {amnt_nginx_lb} Nginx loadbalancer(s)")
+
+                if amnt_psql > "0":
+                    print(f" - {amnt_psql} Postgres instance(s)")
+                print(end="\n")
+
+                if p.take_confirmation("Bevestig (Y/n): "):
+                    break
+
+            """
+            Define the format for templating ip-addresses.`{}` is required 
+            and will be subbed at runtime with the correct octet.
+            """
+            print(end="\n")
+            fmt = "NOTE: `{}` will be replaced with the correct octet at runtime"
+            print(fmt)
+            fmt = "Format of ip (default=192.168.56.{}): "
+            ip_format = p.take_input(fmt, RE_ANY, default="192.168.56.{}")
+
+            fmt = "Number to start formatting the IP from (default=10): "
+            ip_int = p.take_input(fmt, RE_NUM, default="10")
+
+            sub.call([
+                "python3", "cli.py", "create", customer_name, env_name,
+                "--num-nginx-web", amnt_nginx_web, "--num-postgres", amnt_psql,
+                "--num-nginx-lb", amnt_nginx_lb, "--ip-format", ip_format,
+                "--ip-int", ip_int
+            ])
+            print(f"Omgeving `{env_name}` successvol gemaakt.")
+
+        if choice == PortalOptions.DESTROY.value:
+            """
+            Deletes all traces of the chosen environment.
+            """
+            envs = get_env_list(customer_name)
+            fmt = f"Omgevingsnaam {envs}: "
+            env_name = p.take_choice(fmt, envs)
+            sub.call(["python3", "cli.py", "delete", customer_name, env_name])
+
+        if choice == PortalOptions.RECOVER.value:
+            """
+            Allows the customer to "force" their environment into the desired `up-state`. 
+            This `up-state` is a representation of the Vagrantfile, Ansible inventory and 
+            .ssh directory of that specific environment. The .ssh directory is only 
+            necessary in case of an existing storage-volume. Otherwise a new one 
+            keypair can be manually created or created using option 1.
+            """
+            envs = get_env_list(customer_name)
+            fmt = f"Omgevingsnaam {envs}: "
+            env_name = p.take_choice(fmt, envs)
+            sub.call(["python3", "cli.py", "recover", customer_name, env_name])
+
+        if choice == PortalOptions.LIST.value:
+            """
+            This branch displays the customer's existing environments
+            """
+            print("De volgende omgeving(en) zijn aanwezig: ")
+            for env in get_env_list(customer_name):
+                print(f" - {env}")
 
-    args = parser.parse_args(sys.argv[1:])
-    args.func(args)
     return 0
 
 

templates/Vagrantfile.template

@@ -10,11 +10,10 @@ Vagrant.configure("2") do |config|
   config.ssh.insert_key = false
   config.ssh.private_key_path = ["./.ssh/id_rsa","~/.vagrant.d/insecure_private_key"]
 
-  num_webserver = {{ num_webserver }}
-  num_loadbalancer = {{ num_loadbalancers }}
   num_postgresql = {{ num_postgres }}
 
-  (1..num_webserver).each do |nth|
+  {% if webserver_specs is not none %}
+  (1..{{ num_webserver }}).each do |nth|
     machine_id = "{{ customer_name }}-{{ env }}-web%d" % [nth]   
     machine_ip = increment_ip()
 
@@ -33,8 +32,10 @@ Vagrant.configure("2") do |config|
       end
     end
   end
+  {% endif %}
 
-  (1..num_loadbalancer).each do |nth|
+  {% if loadbalancers_specs is not none %}
+  (1..{{ num_loadbalancers }}).each do |nth|
     machine_id = "{{ customer_name }}-{{ env }}-lb%d" % [nth]  
     machine_ip = increment_ip()
 
@@ -53,8 +54,10 @@ Vagrant.configure("2") do |config|
       end
     end
   end
+  {% endif %}
 
-    (1..num_postgresql).each do |nth|
+  {% if postgres_specs is not none %}
+  (1..{{ num_postgres }}).each do |nth|
     machine_id = "{{ customer_name }}-{{ env }}-db%d" % [nth]  
     machine_ip = increment_ip()
 
@@ -73,4 +76,5 @@ Vagrant.configure("2") do |config|
       end
     end
   end
+  {% endif %}
 end

templates/ansible.cfg.template

@@ -3,3 +3,6 @@ private_key_file = "./.ssh/id_rsa"
 remote_user = "vagrant"
 inventory = ./inventory
 host_key_checking = False
+
+[ssh_connection]
+retries=2