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asynq/tools/asynqmon/README.md
2020-01-25 08:08:13 -08:00

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# Asynqmon
Asynqmon is a command line tool to monitor the tasks managed by `asynq` package.
## Table of Contents
- [Installation](#installation)
- [Quick Start](#quick-start)
- [Stats](#stats)
- [History](#history)
- [List](#list)
- [Enqueue](#enqueue)
- [Delete](#delete)
- [Kill](#kill)
- [Config File](#config-file)
## Installation
In order to use the tool, compile it using the following command:
go get github.com/hibiken/asynq/tools/asynqmon
This will create the asynqmon executable under your `$GOPATH/bin` directory.
## Quick Start
The tool has a few commands to inspect the state of tasks and queues.
Run `asynqmon help` to see all the available commands.
Asynqmon needs to connect to a redis-server to inspect the state of queues and tasks. Use flags to specify the options to connect to the redis-server used by your application.
By default, Asynqmon will try to connect to a redis server running at `localhost:6379`.
### Stats
Stats command gives the overview of the current state of tasks and queues. You can run it in conjunction with `watch` command to repeatedly run `stats`.
Example:
watch -n 3 asynqmon stats
This will run `asynqmon stats` command every 3 seconds.
![Gif](/docs/assets/asynqmon_stats.gif)
### History
History command shows the number of processed and failed tasks from the last x days.
By default, it shows the stats from the last 10 days. Use `--days` to specify the number of days.
Example:
asynqmon history --days=30
![Gif](/docs/assets/asynqmon_history.gif)
### List
List command shows all tasks in the specified state in a table format
Example:
asynqmon ls retry
asynqmon ls scheduled
asynqmon ls dead
asynqmon ls enqueued
asynqmon ls inprogress
### Enqueue
There are two commands to enqueue tasks.
Command `enq` takes a task ID and moves the task to **Enqueued** state. You can obtain the task ID by running `ls` command.
Example:
asynqmon enq d:1575732274:bnogo8gt6toe23vhef0g
Command `enqall` moves all tasks to **Enqueued** state from the specified state.
Example:
asynqmon enqall retry
Running the above command will move all **Retry** tasks to **Enqueued** state.
### Delete
There are two commands for task deletion.
Command `del` takes a task ID and deletes the task. You can obtain the task ID by running `ls` command.
Example:
asynqmon del r:1575732274:bnogo8gt6toe23vhef0g
Command `delall` deletes all tasks which are in the specified state.
Example:
asynqmon delall retry
Running the above command will delete all **Retry** tasks.
### Kill
There are two commands to kill (i.e. move to dead state) tasks.
Command `kill` takes a task ID and kills the task. You can obtain the task ID by running `ls` command.
Example:
asynqmon kill r:1575732274:bnogo8gt6toe23vhef0g
Command `killall` kills all tasks which are in the specified state.
Example:
asynqmon killall retry
Running the above command will move all **Retry** tasks to **Dead** state.
## Config File
You can use a config file to set default values for the flags.
This is useful, for example when you have to connect to a remote redis server.
By default, `asynqmon` will try to read config file located in
`$HOME/.asynqmon.(yaml|json)`. You can specify the file location via `--config` flag.
Config file example:
```yaml
uri: 127.0.0.1:6379
db: 2
password: mypassword
```
This will set the default values for `--uri`, `--db`, and `--password` flags.