Creating a job from repository source code

You can create your job directly from source code that is located in a Git repository with the IBM Cloud® Code Engine console and CLI. Find out what advantages are available when you build your image with Code Engine.

Creating your job from repository source code from the console

You can create your job directly from source code with the console.

Before you begin, plan for your build. You can also find tips for creating a Dockerfile. Each time that you run the job, the most current version of the dependent build artifacts, including the buildpacks and container image, are used during the build process and are included in the resulting container image.

Code Engine can automatically push (upload) images to IBM Cloud® Container Registry namespaces in your account and even create a namespace for you. To push images to a different Container Registry account or to a private Docker Hub account, see Accessing container registries.

For information about required permissions for accessing image registries, see Setting up authorities for image registries.

Open the Code Engine console.
Select Let's go.
Select Job.
Enter a name for the job. Use a name for your job that is unique within the project.
Select a project from the list of available projects. You can also create a new one. Note that you must have a selected project to create a job.
Select Source code.
Click Specify build details.
Select a source repository, for example, https://github.com/IBM/CodeEngine. Because we are using sample source that does not require credentials, select None for the Code repo access. You can optionally provide a branch name. If you do not provide a branch name and you leave the field empty, Code Engine automatically uses the default branch of the specified repository. Click Next.
Select a strategy for your build and resources for your build. For more information about build options, see Planning your build. Click Next.
Provide registry information about where to store the image of your build output. Select a container registry location, such as IBM Registry Dallas. If your registry is private, you must set up access to it.
Select an existing Registry secret or create a new one. If you are building your image to an IBM Cloud Container Registry instance that is in your account, you can select Code Engine managed secret and let Code Engine create and manage the secret for you.
Select a namespace, name, and a tag for your image. If you are building your image to an IBM Cloud Container Registry instance that is in your account, you can select an existing namespace or let Code Engine create and manage the namespace for you.
Click Done.
Modify any default values for environment variables or runtime settings. For more information about these options, see Options for creating and running a job.
Click Create.
After your build run is submitted, the built container image is sent to Container Registry and then your job can reference the built image. When the job is ready, click Submit job to run the job based on the current configuration.

Build runs that complete are ultimately automatically deleted. When your build run is based on build configuration, this build run is deleted after 3 hours if the build run is successful. If the build run is not successful, this build run is deleted after 48 hours.

Now that you have created your job and run your job, you can view details about your job configuration and job runs from your job page.

Need help? Check out Troubleshooting tips for builds.

Creating your job from repository source code with the CLI

You can create your job directly from repository source code with the CLI. Use the job create command to both build an image from your Git repository source, and define the configuration for your job.

Before you begin

Set up your Code Engine CLI environment.
Create and work with a project.

In this scenario, Code Engine builds an image from your Git repository source, automatically uploads the image to your container registry, and then creates your job configuration to reference this built image with the job create command. You need to provide only a name for the job and the URL to the Git repository if the image is to be located in an IBM Cloud Container Registry account. In this case, Code Engine manages the namespace for you. However, if you want to use a different container registry, then you must specify the image and a registry secret for that container registry. Use the ibmcloud ce jobrun submit command to run your job that references the built image. For a complete listing of options, see the ibmcloud ce job create and ibmcloud ce jobrun submit commands.

For information about required permissions for accessing image registries, see Setting up authorities for image registries.

Use the job create command to create the myjob-repo job to reference an image that is built from the https://github.com/IBM/CodeEngine build source. This command automatically builds the image and uploads the image to an IBM Cloud® Container Registry namespace in your account and job runs for this job reference this built image. By specifying the --build-context-dir option, the build uses the source in the helloworld directory. This example command uses the default dockerfile strategy, and the default medium build size. Because the branch name of the repository is not specified with the --build-commit option, Code Engine automatically uses the default branch of the specified repository. By adding the --wait option, this specifies for the job create to wait for the image build to complete.

ibmcloud ce job create --name myjob-repo --build-source https://github.com/IBM/CodeEngine --build-context-dir helloworld --wait

Example output

Creating job 'myjob-repo'...
Submitting build run 'myjob-repo-run-220420-15590196'...
Creating image 'private.us.icr.io/ce--abcde-glxo4kabcde/job-myjob-repo'...
Waiting for build run to complete...
Build run status: 'Running'
Build run completed successfully.
Run 'ibmcloud ce buildrun get -n myjob-repo-run-220420-15590196' to check the build run status.
OK

Because we specified the --wait option, the output of the job create command provides information on the progression of the build run before the job is created.

In this example, the built image is uploaded to the ce--abcde-glxo4kabcde namespace in IBM Cloud Container Registry.

The following table summarizes the options that are used with the job create command in this example. For more information about the command and its options, see the ibmcloud ce job create command.

Table 1. Command description
Option	Description
`--name`	The name of the job. Use a name that is unique within the project. This value is required. The name must begin and end with a lowercase alphanumeric character. The name must be 63 characters or fewer and can contain letters, numbers, and hyphens (-).
`--build-source`	The URL of the Git repository that contains your source code; for example, `https://github.com/IBM/CodeEngine`.
`--build-context-dir`	The directory in the repository that contains the buildpacks file or the Dockerfile. This value is optional.
`--wait`	Specifies to wait for the image build to complete before creating the job.

(optional) Use the job get command to display information about your job, including information about the build.

ibmcloud ce job get --name myjob-repo

Example output

[...]
Name:          myjob-repo
ID:            abcdefgh-abcd-abcd-abcd-1a2b3c4d5e6f  
Project Name:  myproject  
Project ID:    01234567-abcd-abcd-abcd-abcdabcd1111 
Age:           2d15h
Created:       2022-04-14T16:10:11-04:00

Image:                private.us.icr.io/ce--abcde-glxo4kabcde/job-myjob-repo

Resource Allocation:
  CPU:     1
  Memory:  4G
Registry Secrets:
  ce-auto-icr-private-us-south

Runtime:
    Mode:                  task
    Array Indices:         0
    Array Size:            1
    Max Execution Time:    7200
    Retry Limit:           3

Build Information:
  Build Run Name:     myjob-repo-run-220420-15590196
  Build Type:         git
  Build Strategy:     dockerfile-medium
  Timeout:            600
  Source:             https://github.com/IBM/CodeEngine
  Context Directory:  helloworld
  Dockerfile:         Dockerfile

  Build Run Summary:  Succeeded
  Build Run Status:   Succeeded
  Build Run Reason:   All Steps have completed executing
  Run 'ibmcloud ce buildrun get -n myjob-repo-run-220420-15590196' for details.

Now that your job is created and your image is built, run your job that references the built image. This example command runs the myjobrun-repo job run based on the myjob-repo job configuration.
```
ibmcloud ce jobrun submit --name myjobrun-repo --job myjob-repo
```

(optional) View the details of your job run.

ibmcloud ce jobrun get --name myjobrun-repo

Example output

Getting jobrun 'myjobrun-local'...
Getting instances of jobrun 'myjobrun-local'...
Getting events of jobrun 'myjobrun-local'...
Run 'ibmcloud ce jobrun events -n myjobrun-local' to get the system events of the job run instances.
Run 'ibmcloud ce jobrun logs -f -n myjobrun-local' to follow the logs of the job run instances.
OK

Name:          myjobrun-local
ID:            abcdefgh-abcd-abcd-abcd-1a2b3c4d5e6f  
Project Name:  myproject  
Project ID:    01234567-abcd-abcd-abcd-abcdabcd1111 
Age:           2d15h
Created:       2022-04-14T16:10:11-04:00

Job Ref:              myjob-repo
Image:                private.us.icr.io/ce--abcde-glxo4kabcde/job-myjob-repo
Resource Allocation:
  CPU:                1
  Ephemeral Storage:  400M
  Memory:             4G
Registry Secrets:
  ce-auto-icr-private-us-south

Runtime:
    Mode:                  task
    Array Indices:         0
    Array Size:            1
    JOP_ARRAY_SIZE Value:  1
    Max Execution Time:    7200
    Retry Limit:           3

Status:
  Completed:          90s
  Instance Statuses:
    Succeeded:  1
  Conditions:
    Type      Status  Last Probe  Last Transition
    Pending   True    101s        101s
    Running   True    91s         91s
    Complete  True    90s         90s

Events:
  Type    Reason     Age                 Source                Messages
  Normal  Updated    91s (x4 over 102s)  batch-job-controller  Updated JobRun "myjobrun-repo"
  Normal  Completed  91s                 batch-job-controller  JobRun completed successfully

Instances:
  Name               Running  Status     Restarts  Age
  myjobrun-repo-0-0  0/1      Succeeded  0         102s

Now that your job is created and run from from repository source code, you can update the job to meet your needs by using the ibmcloud ce job update command. For more information about updating jobs, see Updating a job. If you want to update your source to use with your job, you must provide the --build-source option on the job update command.

When your job is created from repository source code or from local source with the CLI, the resulting build run is not based on a build configuration. Build runs that complete are ultimately automatically deleted. Build runs that are not based on a build configuration are deleted after 1 hour if the build run is successful. If the build run is not successful, this build run is deleted after 24 hours. You can only display information about this build run with the CLI. You cannot view this build run in the console.

Next steps

After you create your job, submit the job to run it. See Run a job. You can run your job multiple times.
After you run your job, to view details of your job and job runs, see access job details.
Now that your job is created, consider making your jobs event-driven. By using event subscriptions, you can trigger your jobs by periodic schedules or set your job to react to events like file uploads.
You can update your job and its referenced code in any of the following ways, independent of how you created or previously updated your job.
- If you have a container image, per the Open Container Initiative (OCI) standard, then you need to provide only a reference to the image, which points to the location of your container registry when you create (or update) your job. You can create (or update) your job from images in a public registry or private registry and then access the referenced image from your job run.
  
  If you created your job by using the job create command and you specified the --build-source option to build the container image from local or repository source, and you want to change your job to point to a different container image, you must first remove the association of the build from your job. For example, run ibmcloud ce job update -n JOB_NAME --build-clear. After you remove the association of the build from your job, you can update the job to reference a different image.
- If you are starting with source code that resides in a Git repository, you can choose to let Code Engine take care of building the image from your source and creating (or updating) the job with a single operation. In this scenario, Code Engine uploads your image to IBM Cloud® Container Registry. To learn more, see Creating a job from repository source code. If you want more control over the build of your image, then you can choose to build the image with Code Engine before you create (or update) your job and run the job.
- If you are starting with source code that resides on a local workstation, you can choose to let Code Engine take care of building the image from your source and creating the job with a single CLI command. In this scenario, Code Engine uploads your image to IBM Cloud® Container Registry. To learn more, see Creating your job from local source code with the CLI. If you want more control over the build of your image, then you can choose to build the image) with Code Engine before you create (or update) your job and run the job.
For example, you might choose to let Code Engine handle the build of your local source while you evolve the development of your source for the job. Then, after the image is matured, you can update the job to reference the specific image that you want. You can repeat this process as needed.

When you run your updated job, the latest version of your referenced container image is used for the job run, unless a tag is specified for the image. If a tag is specified for the image, then the tagged image is used for the job run.

Looking for more code examples? Check out the Samples for IBM Cloud Code Engine GitHub repo.