This script demonstrates how to programmatically cancel queued deployments.
Usage
Provide values for the following
- Octopus URL
 - Octopus API Key
 - Name of the space to work with
 
Script
PowerShell (REST API)
$ErrorActionPreference = "Stop";
# Define working variables
$octopusURL = "https://your-octopus-url"
$octopusAPIKey = "API-YOUR-KEY"
$header = @{ "X-Octopus-ApiKey" = $octopusAPIKey }
$spaceName = "default"
# Get space
$space = (Invoke-RestMethod -Method Get -Uri "$octopusURL/api/spaces/all" -Headers $header) | Where-Object {$_.Name -eq $spaceName}
$canContinue = $true
while ($canContinue -eq $true)
{
    # Get tasks
    $tasks = Invoke-RestMethod -Method Get -Uri "$octopusURL/api/$($space.Id)/tasks?States=Queued&Name=Deploy" -Headers $header
    # Loop through tasks
    foreach ($task in $tasks.Items)
    {
        # Cancel task
        Invoke-RestMethod -Method Post -Uri "$octopusURL/api/$($space.Id)/tasks/$($task.Id)/cancel" -Headers $header
    }
    $canContinue = $tasks.NumberOfPages -gt 1
}
C#
// If using .net Core, be sure to add the NuGet package of System.Security.Permissions
#r "nuget: Octopus.Client"
using Octopus.Client;
using Octopus.Client.Model;
// Declare working variables
var octopusURL = "https://your-octopus-url";
var octopusAPIKey = "API-YOUR-KEY";
string spaceName = "default";
// Create repository object
var endpoint = new OctopusServerEndpoint(octopusURL, octopusAPIKey);
var repository = new OctopusRepository(endpoint);
var client = new OctopusClient(endpoint);
try
{
    // Get space
    var space = repository.Spaces.FindByName(spaceName);
    var repositoryForSpace = client.ForSpace(space);
    var canContinue = true;
    
    while (canContinue == true)
    {
        // Get queued deployments
        var queuedDeployments = client.List<TaskResource>(repositoryForSpace.Link("Tasks"), new { states = "Queued", name = "Deploy", take = "50", skip = "0"});
        // Loop through results
        foreach (var task in queuedDeployments.Items)
        {
            // Cancel deployment
            repositoryForSpace.Tasks.Cancel(task);
        }
        
        canContinue = queuedDeployments.Items.Count > 0;
    }
}
catch (Exception ex)
{
    Console.WriteLine(ex.Message);
    return;
}
Python3
import json
import requests
octopus_server_uri = 'https://your-octopus-url'
octopus_api_key = 'API-YOUR-KEY'
headers = {'X-Octopus-ApiKey': octopus_api_key}
def get_octopus_resource(uri):
    response = requests.get(uri, headers=headers)
    response.raise_for_status()
    return json.loads(response.content.decode('utf-8'))
def get_by_name(uri, name):
    resources = get_octopus_resource(uri)
    return next((x for x in resources if x['Name'] == name), None)
space_name = 'Default'
space = get_by_name('{0}/spaces/all'.format(octopus_server_uri), space_name)
results = 1
while results > 0
    tasks = get_octopus_resource('{0}/{1}/tasks?States=Queued&Name=Deploy'.format(octopus_server_uri, space['Id']))
    queued = [task for task in tasks['Items'] if not task['HasBeenPickedUpByProcessor']]
    results = len(queued)
    for task in queued:
        uri = '{0}/{1}/tasks/{2}/cancel'.format(octopus_server_uri, space['Id'], task['Id'])
        response = requests.post(uri, headers=headers)
        response.raise_for_status()
Go
package main
import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"net/url"
	"io/ioutil"
	"github.com/OctopusDeploy/go-octopusdeploy/octopusdeploy"
)
func main() {
	apiURL, err := url.Parse("https://your-octopus-url")
	if err != nil {
		log.Println(err)
	}
	APIKey := "API-YOUR-KEY"
	spaceName := "Default"
	// Get reference to space
	space := GetSpace(apiURL, APIKey, spaceName)
	canContinue := true
	for canContinue {
		tasks := GetQueuedTasks(apiURL, APIKey, space)
		//fmt.Println(tasks)
		for i := 0; i < len(tasks); i++ {
			task := tasks[i].(map[string]interface{})
			CancelTask(apiURL, APIKey, space, task["Id"].(string))
		}
		if len(tasks) == 0 {
			canContinue = false
		}
	}
}
func octopusAuth(octopusURL *url.URL, APIKey, space string) *octopusdeploy.Client {
	client, err := octopusdeploy.NewClient(nil, octopusURL, APIKey, space)
	if err != nil {
		log.Println(err)
	}
	return client
}
func GetSpace(octopusURL *url.URL, APIKey string, spaceName string) *octopusdeploy.Space {
	client := octopusAuth(octopusURL, APIKey, "")
	spaceQuery := octopusdeploy.SpacesQuery{
		Name: spaceName,
	}
	// Get specific space object
	spaces, err := client.Spaces.Get(spaceQuery)
	if err != nil {
		log.Println(err)
	}
	for _, space := range spaces.Items {
		if space.Name == spaceName {
			return space
		}
	}
	return nil
}
func GetQueuedTasks(octopusURL *url.URL, APIKey string, space *octopusdeploy.Space) []interface{} {
	// Query api for tasks
	tasksApi := octopusURL.String() + "/api/" + space.ID + "/tasks?States=Queued&Name=Deploy"
	// Create http client
	httpClient := &http.Client{}
	// perform request
	request, _ := http.NewRequest("GET", tasksApi, nil)
	request.Header.Set("X-Octopus-ApiKey", APIKey)
	response, err := httpClient.Do(request)
	if err != nil {
		log.Println(err)
	}
	responseData, err := ioutil.ReadAll(response.Body)
	var f interface{}
	jsonErr := json.Unmarshal(responseData, &f)
	if jsonErr != nil {
		log.Println(err)
	}
	tasks := f.(map[string]interface{})
	// return the tasks
	return tasks["Items"].([]interface{})
}
func CancelTask(octopusURL *url.URL, APIKey string, space *octopusdeploy.Space, TaskId string) {
	// create http client
	httpClient := &http.Client{}
	// perform post
	tasksApi := octopusURL.String() + "/api/" + space.ID + "/tasks/" + TaskId + "/cancel"
	request, _ := http.NewRequest("POST", tasksApi, nil)
	request.Header.Set("X-Octopus-ApiKey", APIKey)
	response, err := httpClient.Do(request)
	fmt.Println(tasksApi)
	if err != nil {
		log.Println(err)
	}
	if response.StatusCode == 200 {
		fmt.Println("Task " + TaskId + " has been cancelled.")
	}
}
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Page updated on Sunday, January 1, 2023