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

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

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# ---------------------------------------------------------- #
# 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 "$@"
}