Panic when planning

[mikenomitch]

I get this error when I try to plan a pack. It works properly when rendering and when running though.

➜  pack plan ./packs/promtail

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1b422ab]

goroutine 1 [running]:
github.com/hashicorp/nomad-pack/internal/runner/job.formatTaskGroupDiff({0x0, 0xc0006908a0, 0x0, 0xc00009e618, 0xc000690890, 0x0}, 0x2, 0x0, {0x2036ed8, 0xc00054c8a0})
	/Users/mike/Code/nomad-pack/internal/runner/job/format.go:105 +0x3ab
github.com/hashicorp/nomad-pack/internal/runner/job.formatJobDiff({0xc00009e480, 0xc0006905f0, 0x0, 0xc00009e528, 0xc0006905e0}, 0x0, {0x2036ed8, 0xc00054c8a0})
	/Users/mike/Code/nomad-pack/internal/runner/job/format.go:90 +0x5a5
github.com/hashicorp/nomad-pack/internal/runner/job.(*Runner).outputPlannedJob(0xc00091fb08, {0x2036ed8, 0xc00054c8a0}, 0xc00022ea20, 0xc0004e7a80)
	/Users/mike/Code/nomad-pack/internal/runner/job/plan.go:118 +0xab
github.com/hashicorp/nomad-pack/internal/runner/job.(*Runner).PlanDeployment(0xc000540190, {0x2036ed8, 0xc00054c8a0}, 0xc00009e498)
	/Users/mike/Code/nomad-pack/internal/runner/job/plan.go:57 +0x627
github.com/hashicorp/nomad-pack/cli.(*PlanCommand).Run(0xc00009e1b0, {0xc0000300e0, 0x0, 0x0})
	/Users/mike/Code/nomad-pack/cli/plan.go:104 +0x659
github.com/mitchellh/cli.(*CLI).Run(0xc00012e140)
	/Users/mike/go/pkg/mod/github.com/mitchellh/[email protected]/cli.go:262 +0x5f8
github.com/hashicorp/nomad-pack/cli.Main({0xc0000300c0, 0x3, 0x3})
	/Users/mike/Code/nomad-pack/cli/main.go:94 +0x2ad
main.main()
	/Users/mike/Code/nomad-pack/main.go:12 +0x7f

[jrasell]

@mikenomitch thanks for raising the issue, could you provide any additional details on how to reproduce this?

[mikenomitch]

I just tried to nomad-pack plan promtail with the code from this PR - hashicorp/nomad-pack-community-registry#46

[groggemans]

I had a similar issue where the only difference was the job type (service worked, system failed)
Using this pack; https://github.com/groggemans/nomad-pack-community-registry/tree/feature/prometheus-snmp-exporter-pack/packs/prometheus_snmp_exporter

[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x11177ea]

goroutine 1 [running]:
github.com/hashicorp/nomad-pack/internal/runner/job.formatTaskGroupDiff(0xc00078b3e0, 0xc0001f5b20, 0xc00078b440, 0xc00078b560, 0xc0001f5b10, 0x0, 0x0, 0xc0004eb900, 0x1682128, 0xc000114440)
        /home/circleci/project/project/internal/runner/job/format.go:105 +0x30a
github.com/hashicorp/nomad-pack/internal/runner/job.formatJobDiff(0xc00078b1a0, 0xc0001f5680, 0xc00078b230, 0xc00078b2f0, 0xc0001f5670, 0x1669e00, 0x1682128, 0xc000114440)
        /home/circleci/project/project/internal/runner/job/format.go:90 +0x4d6
github.com/hashicorp/nomad-pack/internal/runner/job.(*Runner).outputPlannedJob(0xc000614000, 0x1682128, 0xc000114440, 0xc0007aeea0, 0xc000046a80, 0xc000046a80)
        /home/circleci/project/project/internal/runner/job/plan.go:118 +0x23a
github.com/hashicorp/nomad-pack/internal/runner/job.(*Runner).PlanDeployment(0xc000614000, 0x1682128, 0xc000114440, 0xc000210498, 0x0, 0xc0004b3f90, 0x167ca48, 0xc000614000)
        /home/circleci/project/project/internal/runner/job/plan.go:57 +0x558
github.com/hashicorp/nomad-pack/cli.(*PlanCommand).Run(0xc0002101b0, 0xc0000300b0, 0x1, 0x1, 0xc00060e290)
        /home/circleci/project/project/cli/plan.go:104 +0x99d
github.com/mitchellh/cli.(*CLI).Run(0xc000618140, 0xc0002dfef8, 0xc00000e048, 0x1)
        /go/pkg/mod/github.com/mitchellh/[email protected]/cli.go:262 +0x41a
github.com/hashicorp/nomad-pack/cli.Main(0xc000030090, 0x3, 0x3, 0x0)
        /home/circleci/project/project/cli/main.go:94 +0x225
main.main()
        /home/circleci/project/project/main.go:12 +0xa5

Now I'm only seeming to get this when there is a datacenter configured that doesn't exist in my cluster. (with job type service it doesn't error even with the non existing dc)

[mikenomitch]

Anybody have a current repro of this issue?

[mikenomitch]

Closing this out as I don't think it is an issue anymore. Please comment if you see the issue on the latest version!