feat(juju): add plugin for Juju (juju.is) (#10075)

Co-authored-by: Jon Seager <jon@sgrs.uk>

plugins/juju/README.md

+# juju plugin
+
+This plugin provides useful aliases and functions for [juju](https://juju.is/) (for TAB completion,
+refer to the [official repo](https://github.com/juju/juju/blob/develop/etc/bash_completion.d/juju)).
+
+To use this plugin, add `juju` to the plugins array in your zshrc file.
+
+```zsh
+plugins=(... juju)
+```
+
+## Aliases
+
+Naming convention:
+
+- `!` suffix: `--force --no-wait -y`.
+- `ds` suffix: `--destroy-storage`.
+
+### General
+
+| Alias  | Command                                     | Description                                            |
+|--------|---------------------------------------------|--------------------------------------------------------|
+| `jdl`  | `juju debug-log --ms`                       | Display log, with millisecond resolution               |
+| `jdlr` | `juju debug-log --ms --replay`              | Replay entire log                                      |
+| `jh`   | `juju help`                                 | Show help on a command or other topic                  |
+| `jssl` | `juju juju show-status-log`                 | Output past statuses for the specified entity          |
+| `jstj` | `juju status --format=json`                 | Show status in json format (more detailed)             |
+| `jst`  | `juju status --relations --storage --color` | Show status, including relations and storage, in color |
+
+### Bootstrap
+
+| Alias | Command                   | Description                               |
+|-------|---------------------------|-------------------------------------------|
+| `jb`  | `juju bootstrap`          | Initializing a Juju cloud environment     |
+| `jbm` | `juju bootstrap microk8s` | Initializing a MicroK8s cloud environment |
+
+### Controller
+
+| Alias    | Command                                                                               | Description                                                       |
+|----------|---------------------------------------------------------------------------------------|-------------------------------------------------------------------|
+| `jdc`    | `juju destroy-controller --destroy-all-models`                                        | Destroy a controller                                              |
+| `jdc!`   | `juju destroy-controller --destroy-all-models --force --no-wait -y`                   | Destroy a controller                                              |
+| `jdcds`  | `juju destroy-controller --destroy-all-models --destroy-storage`                      | Destroy a controller and associated storage                       |
+| `jdcds!` | `juju destroy-controller --destroy-all-models --destroy-storage --force --no-wait -y` | Destroy a controller and associated storage                       |
+| `jkc`    | `juju kill-controller -y -t 0`                                                        | Forcibly terminate all associated resources for a Juju controller |
+| `jsw`    | `juju switch`                                                                         | Select or identify the current controller and model               |
+
+### Model
+
+| Alias    | Command                                                     | Description                                           |
+|----------|-------------------------------------------------------------|-------------------------------------------------------|
+| `jam`    | `juju add-model`                                            | Add a hosted model                                    |
+| `jdm`    | `juju destroy-model`                                        | Non-recoverable, complete removal of a model          |
+| `jdm!`   | `juju destroy-model --force --no-wait -y`                   | Non-recoverable, complete removal of a model          |
+| `jdmds`  | `juju destroy-model --destroy-storage`                      | Non-recoverable, complete removal of a model          |
+| `jdmds!` | `juju destroy-model --destroy-storage --force --no-wait -y` | Non-recoverable, complete removal of a model          |
+| `jmc`    | `juju model-config`                                         | Display or set configuration values on a model        |
+| `jm`     | `juju models`                                               | List models a user can access on a controller         |
+| `jshm`   | `juju show-model`                                           | Show information about the current or specified model |
+| `jsw`    | `juju switch`                                               | Select or identify the current controller and model   |
+
+### Application / unit
+
+| Alias    | Command                                                       | Description                                                               |
+|----------|---------------------------------------------------------------|---------------------------------------------------------------------------|
+| `jc`     | `juju config`                                                 | Get, set, or reset configuration for a deployed application               |
+| `jde`    | `juju deploy --channel=edge`                                  | Deploy a new application or bundle from the edge channel                  |
+| `jd`     | `juju deploy`                                                 | Deploy a new application or bundle                                        |
+| `jra`    | `juju run-action`                                             | Queue an action for execution                                             |
+| `jraw`   | `juju run-action --wait`                                      | Queue an action for execution and wait for results, with optional timeout |
+| `jrm`    | `juju remove-application`                                     | Remove application                                                        |
+| `jrm!`   | `juju remove-application --force --no-wait`                   | Remove application forcefully                                             |
+| `jrmds`  | `juju remove-application --destroy-storage`                   | Remove application and destroy attached storage                           |
+| `jrmds!` | `juju remove-application --destroy-storage --force --no-wait` | Remove application forcefully, destroying attached storage                |
+| `jrp`    | `juju refresh --path`                                         | Upgrade charm from local charm file                                       |
+| `jsa`    | `juju scale-application`                                      | Set the desired number of application units                               |
+| `jsh`    | `juju ssh`                                                    | Initiate an SSH session or execute a command on a Juju target             |
+| `jshc`   | `juju ssh --container`                                        | Initiate an SSH session or execute a command on a given container         |
+| `jsu`    | `juju show-unit`                                              | Displays information about a unit                                         |
+
+### Storage
+
+| Alias   | Command                       | Description                                     |
+|---------|-------------------------------|-------------------------------------------------|
+| `jrs`   | `juju remove-storage`         | Remove storage                                  |
+| `jrs!`  | `juju remove-storage --force` | Remove storage even if it is currently attached |
+
+### Relation
+
+| Alias     | Command                        | Description                                                       |
+|-----------|--------------------------------|-------------------------------------------------------------------|
+| `jrel`    | `juju relate`                  | Relate two applications                                           |
+| `jrmrel`  | `juju remove-relation`         | Remove an existing relation between two applications.             |
+| `jrmrel!` | `juju remove-relation --force` | Remove an existing relation between two applications, forcefully. |
+
+### Cross-model relation (CMR)
+
+| Alias    | Command            | Description                                                    |
+|----------|--------------------|----------------------------------------------------------------|
+| `jex`    | `juju expose`      | Make an application publicly available over the network        |
+| `jof`    | `juju offer`       | Offer application endpoints for use in other models            |
+| `jcon`   | `juju consume`     | Add a remote offer to the model                                |
+| `jrmsas` | `juju remove-saas` | Remove consumed applications (SAAS) from the model             |
+| `junex`  | `juju unexpose`    | Remove public availability over the network for an application |
+
+### Bundle
+
+| Alias | Command              | Description                                                 |
+|-------|----------------------|-------------------------------------------------------------|
+| `jeb` | `juju export-bundle` | Export the current model configuration as a reusable bundle |
+
+## Functions
+
+- `jaddr <app_name> [unit_num]`: display app or unit IP address.
+- `jreld <relation_name> <app_name> <unit_num>`: display app and unit relation data.
+- `wjst [interval_secs] [args_for_watch]`: watch juju status, with optional interval
+  (default: 5s); you may pass additional arguments to `watch`.

plugins/juju/juju.plugin.zsh

+# ---------------------------------------------------------- #
+# Aliases and functions for juju (https://juju.is)           #
+# ---------------------------------------------------------- #
+
+# Load TAB completions
+# You need juju's bash completion script installed. By default bash-completion's
+# location will be used (i.e. pkg-config --variable=completionsdir bash-completion).
+completion_file="$(pkg-config --variable=completionsdir bash-completion 2>/dev/null)/juju" || \
+  completion_file="/usr/share/bash-completion/completions/juju"
+[[ -f "$completion_file" ]] && source "$completion_file"
+unset completion_file
+
+# ---------------------------------------------------------- #
+# Aliases (in alphabetic order)                              #
+#                                                            #
+# Generally,                                                 #
+#   - `!` means --force --no-wait -y                         #
+#   - `ds` suffix means --destroy-storage                    #
+# ---------------------------------------------------------- #
+alias jam="juju add-model --config logging-config=\"<root>=WARNING; unit=DEBUG\"\
+ --config update-status-hook-interval=\"60m\""
+alias jb='juju bootstrap'
+alias jbm='juju bootstrap microk8s'
+alias jc='juju config'
+alias jdc='juju destroy-controller --destroy-all-models'
+alias 'jdc!'='juju destroy-controller --destroy-all-models --force --no-wait -y'
+alias jdcds='juju destroy-controller --destroy-all-models --destroy-storage'
+alias 'jdcds!'='juju destroy-controller --destroy-all-models --destroy-storage --force --no-wait -y'
+alias jdm='juju destroy-model'
+alias 'jdm!'='juju destroy-model --force --no-wait -y'
+alias jdmds='juju destroy-model --destroy-storage'
+alias 'jdmds!'='juju destroy-model --destroy-storage --force --no-wait -y'
+alias jde='juju deploy --channel=edge'
+alias jd='juju deploy'
+alias jdl='juju debug-log --ms'
+alias jdlr='juju debug-log --ms --replay'
+alias jcon='juju consume'
+alias jeb='juju export-bundle'
+alias jex='juju expose'
+alias jh='juju help'
+alias jkc='juju kill-controller -y -t 0'
+alias jm='juju models'
+alias jmc='juju model-config'
+alias jof='juju offer'
+alias jra='juju run-action'
+alias jraw='juju run-action --wait'
+alias jrel='juju relate'
+alias jrm='juju remove-application'
+alias 'jrm!'='juju remove-application --force --no-wait'
+alias jrmds='juju remove-application --destroy-storage'
+alias 'jrmds!'='juju remove-application --destroy-storage --force --no-wait'
+alias jrmrel='juju remove-relation'
+alias 'jrmrel!'='juju remove-relation --force'
+alias jrmsas='juju remove-saas'
+alias jrp='juju refresh --path'
+alias jrs='juju remove-storage'
+alias 'jrs!'='juju remove-storage --force'
+alias jsa='juju scale-application'
+alias jsh='juju ssh'
+alias jshc='juju ssh --container'
+alias jshm='juju show-model'
+alias jssl='juju show-status-log'
+alias jstj='juju status --format=json'
+alias jst='juju status --relations --storage --color'
+alias jsu='juju show-unit'
+alias jsw='juju switch'
+
+# ---------------------------------------------------------- #
+# Functions (in alphabetic order)                            #
+# ---------------------------------------------------------- #
+
+# Get app or unit address
+jaddr() {
+  # $1 = app name
+  # $2 = unit number (optional)
+  if (( ! ${+commands[jq]} )); then
+    echo "jq is required but could not be found." >&2
+    return 1
+  fi
+
+  if [[ $# -eq 1 ]]; then
+    # Get app address
+    juju status "$1" --format=json \
+      | jq -r ".applications.\"$1\".address"
+  elif [[ $# -eq 2 ]]; then
+    # Get unit address
+    juju status "$1/$2" --format=json \
+      | jq -r ".applications.\"$1\".units.\"$1/$2\".address"
+  else
+    echo "Invalid number of arguments."
+    echo "Usage:   jaddr <app-name> [<unit-number>]"
+    echo "Example: jaddr karma"
+    echo "Example: jaddr karma 0"
+    return 1
+  fi
+}
+
+# Display app and unit relation data
+jreld() {
+  # $1 = relation name
+  # $2 = app name
+  # $3 = unit number
+  if [[ $# -ne 3 ]]; then
+    echo "Invalid number of arguments."
+    echo "Usage:   jreld <relation-name> <app-name> <unit-number>"
+    echo "Example: jreld karma-dashboard alertmanager 0"
+    return 1
+  fi
+
+  local relid="$(juju run "relation-ids $1" --unit $2/$3)"
+  if [[ -z "$relid" ]]; then
+    return 1
+  fi
+
+  echo "App data:"
+  juju run "relation-get -r $relid --app - $2" --unit $2/$3
+  echo
+  echo "Unit data:"
+  juju run "relation-get -r $relid - $2" --unit $2/$3
+}
+
+# Watch juju status, with optional interval (default: 5 sec)
+wjst() {
+  local interval="${1:-5}"
+  shift $(( $# > 0 ))
+  watch -n "$interval" --color juju status --relations --storage --color "$@"
+}