Terraform report: support more than one plan

Summary

Having more than one job producing Terraform plan and using artifact:reports:terraform will show one plan but entirely hide the other.

Steps to reproduce

Have two jobs producing two different Terraform plans, observe the result on merge request page.

Example Project

N/A, the project is not public, on on-premise GitLab installation.

What is the current bug behavior?

One plan is only shown in the widget, the other one is lost.

What is the expected correct behavior?

A summary of both plans should be displayed, much like artifact:reports:junit merges multiple XML reports into single widget.

Relevant logs and/or screenshots

The screenshot shows the widget for a pipeline with two jobs:

One job had 2 modified resources, the other one had 1 modified resource. Only the results for one of the jobs are visible.

Output of checks

This bug happens on GitLab.com - my assumption is that yes, it happens also on GitLab.com, as this functionality is not exclusive to on-premise installations.

Results of GitLab environment info

Expand for output related to GitLab environment info

I've allowed myself to redact the exact URL of the installation, it is available in support case tho.

# gitlab-rake gitlab:env:info

System information
System:		Ubuntu 18.04
Proxy:		no
Current User:	git
Using RVM:	no
Ruby Version:	2.6.6p146
Gem Version:	2.7.10
Bundler Version:1.17.3
Rake Version:	12.3.3
Redis Version:	5.0.9
Git Version:	2.26.2
Sidekiq Version:5.2.7
Go Version:	unknown

GitLab information
Version:	13.0.0-ee
Revision:	ef3e35341f6
Directory:	/opt/gitlab/embedded/service/gitlab-rails
DB Adapter:	PostgreSQL
DB Version:	11.6
URL:		https://gitlab.REDACTED.com
HTTP Clone URL:	https://gitlab.REDACTED.com/some-group/some-project.git
SSH Clone URL:	git@gitlab.REDACTED.com:some-group/some-project.git
Elasticsearch:	no
Geo:		no
Using LDAP:	no
Using Omniauth:	yes
Omniauth Providers: google_oauth2, github

GitLab Shell
Version:	13.2.0
Repository storage paths:
- default: 	/var/opt/gitlab/git-data/repositories
GitLab Shell path:		/opt/gitlab/embedded/service/gitlab-shell
Git:		/opt/gitlab/embedded/bin/git

Results of GitLab application Check

Expand for output related to the GitLab application check

# gitlab-rake gitlab:check SANITIZE=true
Checking GitLab subtasks ...
Checking GitLab Shell ...
GitLab Shell: ... GitLab Shell version >= 13.2.0 ? ... OK (13.2.0)
Running /opt/gitlab/embedded/service/gitlab-shell/bin/check
Internal API available: OK
Redis available via internal API: OK
gitlab-shell self-check successful
Checking GitLab Shell ... Finished
Checking Gitaly ...
Gitaly: ... default ... OK
Checking Gitaly ... Finished
Checking Sidekiq ...
Sidekiq: ... Running? ... yes
Number of Sidekiq processes ... 1
Checking Sidekiq ... Finished
Checking Incoming Email ...
Incoming Email: ... Reply by email is disabled in config/gitlab.yml
Checking Incoming Email ... Finished
Checking LDAP ...
LDAP: ... LDAP is disabled in config/gitlab.yml
Checking LDAP ... Finished
Checking GitLab App ...
Git configured correctly? ... yes
Database config exists? ... yes
All migrations up? ... yes
Database contains orphaned GroupMembers? ... no
GitLab config exists? ... yes
GitLab config up to date? ... yes
Log directory writable? ... yes
Tmp directory writable? ... yes
Uploads directory exists? ... yes
Uploads directory has correct permissions? ... yes
Uploads directory tmp has correct permissions? ... yes
Init script exists? ... skipped (omnibus-gitlab has no init script)
Init script up-to-date? ... skipped (omnibus-gitlab has no init script)
Projects have namespace: ...
40/1 ... yes
40/2 ... yes
10/3 ... yes
12/4 ... yes
40/6 ... yes
11/8 ... yes
12/10 ... yes
12/11 ... yes
40/12 ... yes
9/13 ... yes
40/14 ... yes
40/15 ... yes
40/16 ... yes
40/17 ... yes
33/19 ... yes
33/20 ... yes
33/21 ... yes
12/23 ... yes
40/27 ... yes
12/28 ... yes
40/29 ... yes
40/30 ... yes
40/31 ... yes
40/32 ... yes
40/33 ... yes
40/34 ... yes
40/35 ... yes
40/36 ... yes
40/37 ... yes
12/38 ... yes
12/39 ... yes
12/40 ... yes
40/41 ... yes
40/42 ... yes
12/43 ... yes
40/44 ... yes
40/45 ... yes
40/46 ... yes
40/47 ... yes
40/48 ... yes
40/49 ... yes
40/50 ... yes
40/51 ... yes
40/53 ... yes
40/54 ... yes
40/55 ... yes
40/56 ... yes
40/57 ... yes
40/58 ... yes
40/59 ... yes
40/60 ... yes
40/61 ... yes
40/62 ... yes
40/63 ... yes
40/64 ... yes
12/66 ... yes
40/67 ... yes
12/69 ... yes
12/70 ... yes
40/72 ... yes
40/74 ... yes
11/77 ... yes
40/78 ... yes
12/80 ... yes
12/83 ... yes
12/85 ... yes
12/86 ... yes
12/87 ... yes
33/88 ... yes
21/90 ... yes
33/93 ... yes
12/94 ... yes
20/95 ... yes
9/96 ... yes
11/97 ... yes
13/100 ... yes
6/103 ... yes
33/105 ... yes
13/106 ... yes
33/107 ... yes
40/109 ... yes
10/110 ... yes
33/111 ... yes
40/112 ... yes
33/113 ... yes
20/114 ... yes
33/115 ... yes
33/116 ... yes
12/118 ... yes
12/119 ... yes
12/120 ... yes
40/121 ... yes
12/124 ... yes
7/127 ... yes
33/128 ... yes
7/130 ... yes
12/131 ... yes
12/133 ... yes
33/134 ... yes
33/136 ... yes
33/137 ... yes
12/138 ... yes
33/139 ... yes
76/140 ... yes
33/141 ... yes
7/142 ... yes
12/143 ... yes
33/144 ... yes
12/146 ... yes
70/147 ... yes
70/148 ... yes
10/149 ... yes
7/150 ... yes
10/151 ... yes
10/154 ... yes
10/155 ... yes
88/156 ... yes
88/157 ... yes
88/158 ... yes
88/159 ... yes
68/160 ... yes
88/162 ... yes
7/165 ... yes
90/166 ... yes
9/167 ... yes
12/168 ... yes
10/169 ... yes
10/170 ... yes
10/172 ... yes
35/173 ... yes
10/174 ... yes
88/175 ... yes
Redis version >= 4.0.0? ... yes
Ruby version >= 2.5.3 ? ... yes (2.6.6)
Git version >= 2.22.0 ? ... yes (2.26.2)
Git user has default SSH configuration? ... yes
Active users: ... 20
Is authorized keys file accessible? ... yes
GitLab configured to store new projects in hashed storage? ... yes
All projects are in hashed storage? ... no
Try fixing it:
Please migrate all projects to hashed storage
as legacy storage is deprecated in 13.0 and support will be removed in 14.0.
For more information see:
doc/administration/repository_storage_types.md
Elasticsearch version 5.6 - 6.x? ... skipped (elasticsearch is disabled)
Checking GitLab App ... Finished
Checking GitLab subtasks ... Finished

Possible fixes