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Code used in exercises and demonstrations for the "Temporal 102 with Go" course

Home Page: https://learn.temporal.io/courses/temporal_102/go

License: MIT License

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edu-102-go-code's Introduction

Code Repository for Temporal 102 (Go)

This repository provides code used for exercises and demonstrations included in the Go version of the Temporal 102 training course.

It's important to remember that the example code used in this course was designed to support learning a specific aspect of Temporal, not to serve as a ready-to-use template for implementing a production system.

For the exercises, make sure to run temporal server start-dev --ui-port 8080 --db-filename clusterdata.db in one terminal to start the Temporal server. For more details on this command, please refer to the Setting up a Local Development Environment chapter in the course. Note: If you're using the Gitpod environment to run this exercise, you can skip this step.

Hands-On Exercises

Directory Name	Exercise
`exercises/durable-execution`	Exercise 1
`exercises/testing-code`	Exercise 2
`exercises/debug-activity`	Exercise 3

Examples for Self-Study

Directory Name	Description
`samples/age-estimation`	Calls a remote API to estimate a given name
`samples/using-structs`	Demonstrates how to model inputs and outputs

Reference

The following links provide additional information that you may find helpful as you work through this course.

Exercise Environment for this Course

You can launch an exercise environment for this course in GitPod by clicking the button below:

Alternatively, you can follow the instructions in the "(Optional activity) Setting up a Local Development Environment" section in the course to set up a local development environment.

edu-102-go-code's People

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ggranjus jakejscott saputradharma sean-sekora qiuzhanghua bhataprameya iamdanhart nikitha2404 kmorin aoao54 angelazhou32 temporalio arbarikcp wmcqueenzava jingb-anz prasek dcrosta kingnand krelinga

edu-102-go-code's Issues

version-workflow exercise error

Describe the bug
ReplayWorkflowHistoryFromJSONFile fails when using the Download functionality with the temporal cli tool

The error is:

unknown field "normalName" in taskqueue.TaskQueue

Note: If you're having issues with the course, or need assistance with the course itself, please post your questions to the support forum at https://community.temporal.io/c/training

To Reproduce
Steps to reproduce the behavior:
2. Clone this repository
3. Run temporal cli (temporal version 0.10.6 (server 1.22.0) (ui 2.18.2)
4. Follow Part A in exercises/version-workflow/READEME.md
5. Copy the TestReplayWorkflowHistoryFromFile test from solution/workflow_test.go to the practice directory
6. Run the go tests in the practice directory.
7. See error: unknown field "normalName" in taskqueue.TaskQueue

Expected behavior
Part B of the practice instructions expects the error to be a non-deterministic error.

Screenshots

Desktop (please complete the following information):

OS: macOS 13.4
Browser chrome
Version 117

Smartphone (please complete the following information):

N/A
Are you using Gitpod or developing locally? developing locally

Additional context
Add any other context about the problem here.

go.temporal.io/sdk-v1.19.0: 1 vulnerabilities (highest severity is: 7.5)

Vulnerable Library - go.temporal.io/sdk-v1.19.0

Path to dependency file: /go.mod

Path to vulnerable library: /go/pkg/mod/cache/download/golang.org/x/net/@v/v0.1.0.mod

Found in HEAD commit: 3848d5932e09131ed8410f24e1e732e621f48c3f

Vulnerabilities

CVE	Severity	CVSS	Dependency	Type	Fixed in (go.temporal.io/sdk-v1.19.0 version)	Remediation Possible**
CVE-2023-39325	High	7.5	golang.org/x/net-v0.1.0	Transitive	N/A*	❌

*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2023-39325

Vulnerable Library - golang.org/x/net-v0.1.0

[mirror] Go supplementary network libraries

Library home page: https://proxy.golang.org/golang.org/x/net/@v/v0.1.0.zip

Path to dependency file: /go.mod

Path to vulnerable library: /go/pkg/mod/cache/download/golang.org/x/net/@v/v0.1.0.mod

Dependency Hierarchy:

go.temporal.io/sdk-v1.19.0 (Root Library)
- google.golang.org/grpc-v1.50.1
  - ❌ golang.org/x/net-v0.1.0 (Vulnerable Library)

Found in HEAD commit: 3848d5932e09131ed8410f24e1e732e621f48c3f

Found in base branch: main

Vulnerability Details

A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a new request while the existing one is still executing. With the fix applied, HTTP/2 servers now bound the number of simultaneously executing handler goroutines to the stream concurrency limit (MaxConcurrentStreams). New requests arriving when at the limit (which can only happen after the client has reset an existing, in-flight request) will be queued until a handler exits. If the request queue grows too large, the server will terminate the connection. This issue is also fixed in golang.org/x/net/http2 for users manually configuring HTTP/2. The default stream concurrency limit is 250 streams (requests) per HTTP/2 connection. This value may be adjusted using the golang.org/x/net/http2 package; see the Server.MaxConcurrentStreams setting and the ConfigureServer function.

Publish Date: 2023-10-11

URL: CVE-2023-39325

CVSS 3 Score Details (7.5)

Base Score Metrics:

Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://pkg.go.dev/vuln/GO-2023-2102

Release Date: 2023-10-11

Fix Resolution: go1.20.10, go1.21.3, golang.org/x/net - v0.17.0