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tangled.org
1package models
2
3import (
4 "path"
5
6 "tangled.sh/tangled.sh/core/api/tangled"
7 "tangled.sh/tangled.sh/core/spindle/config"
8)
9
10type Pipeline struct {
11 Workflows []Workflow
12}
13
14type Step struct {
15 Command string
16 Name string
17 Environment map[string]string
18}
19
20type Workflow struct {
21 Steps []Step
22 Environment map[string]string
23 Name string
24 Image string
25}
26
27// setupSteps get added to start of Steps
28type setupSteps []Step
29
30// addStep adds a step to the beginning of the workflow's steps.
31func (ss *setupSteps) addStep(step Step) {
32 *ss = append(*ss, step)
33}
34
35// ToPipeline converts a tangled.Pipeline into a model.Pipeline.
36// In the process, dependencies are resolved: nixpkgs deps
37// are constructed atop nixery and set as the Workflow.Image,
38// and ones from custom registries
39func ToPipeline(pl tangled.Pipeline, cfg config.Config) *Pipeline {
40 workflows := []Workflow{}
41
42 for _, twf := range pl.Workflows {
43 swf := &Workflow{}
44 for _, tstep := range twf.Steps {
45 sstep := Step{}
46 sstep.Environment = stepEnvToMap(tstep.Environment)
47 sstep.Command = tstep.Command
48 sstep.Name = tstep.Name
49 swf.Steps = append(swf.Steps, sstep)
50 }
51 swf.Name = twf.Name
52 swf.Environment = workflowEnvToMap(twf.Environment)
53 swf.Image = workflowImage(twf.Dependencies, cfg.Pipelines.Nixery)
54
55 swf.addNixProfileToPath()
56 setup := &setupSteps{}
57
58 setup.addStep(nixConfStep())
59 setup.addStep(cloneStep(*twf, *pl.TriggerMetadata.Repo, cfg.Server.Dev))
60 setup.addStep(checkoutStep(*twf, *pl.TriggerMetadata))
61 setup.addStep(dependencyStep(*twf))
62
63 // append setup steps in order to the start of workflow steps
64 swf.Steps = append(*setup, swf.Steps...)
65
66 workflows = append(workflows, *swf)
67 }
68 return &Pipeline{Workflows: workflows}
69}
70
71func workflowEnvToMap(envs []*tangled.Pipeline_Workflow_Environment_Elem) map[string]string {
72 envMap := map[string]string{}
73 for _, env := range envs {
74 envMap[env.Key] = env.Value
75 }
76 return envMap
77}
78
79func stepEnvToMap(envs []*tangled.Pipeline_Step_Environment_Elem) map[string]string {
80 envMap := map[string]string{}
81 for _, env := range envs {
82 envMap[env.Key] = env.Value
83 }
84 return envMap
85}
86
87func workflowImage(deps []tangled.Pipeline_Dependencies_Elem, nixery string) string {
88 var dependencies string
89 for _, d := range deps {
90 if d.Registry == "nixpkgs" {
91 dependencies = path.Join(d.Packages...)
92 }
93 }
94
95 // load defaults from somewhere else
96 dependencies = path.Join(dependencies, "bash", "git", "coreutils", "nix")
97
98 return path.Join(nixery, dependencies)
99}
100
101func (wf *Workflow) addNixProfileToPath() {
102 wf.Environment["PATH"] = "$PATH:/.nix-profile/bin"
103}