mirror of
https://github.com/thegeeklab/drone-yaml.git
synced 2024-11-16 07:10:40 +00:00
80 lines
2.4 KiB
Go
80 lines
2.4 KiB
Go
// Copyright 2019 Drone IO, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package linter
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import (
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"errors"
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"github.com/drone/drone-yaml/yaml"
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)
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// ErrDuplicatePipelineName is returned when two Pipeline
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// resources have the same name.
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var ErrDuplicatePipelineName = errors.New("linter: duplicate pipeline names")
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// ErrMissingPipelineDependency is returned when a Pipeline
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// defines dependencies that are invlid or unknown.
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var ErrMissingPipelineDependency = errors.New("linter: invalid or unknown pipeline dependency")
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// ErrCyclicalPipelineDependency is returned when a Pipeline
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// defines a cyclical dependency, which would result in an
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// infinite execution loop.
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var ErrCyclicalPipelineDependency = errors.New("linter: cyclical pipeline dependency detected")
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// ErrPipelineSelfDependency is returned when a Pipeline
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// defines a dependency on itself.
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var ErrPipelineSelfDependency = errors.New("linter: pipeline cannot have a dependency on itself")
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// Manifest performs lint operations for a manifest.
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func Manifest(manifest *yaml.Manifest, trusted bool) error {
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return checkPipelines(manifest, trusted)
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}
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func checkPipelines(manifest *yaml.Manifest, trusted bool) error {
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names := map[string]struct{}{}
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for _, resource := range manifest.Resources {
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switch v := resource.(type) {
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case *yaml.Pipeline:
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_, ok := names[v.Name]
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if ok {
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return ErrDuplicatePipelineName
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}
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names[v.Name] = struct{}{}
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err := checkPipelineDeps(v, names)
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if err != nil {
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return err
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}
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err = checkPipeline(v, trusted)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func checkPipelineDeps(pipeline *yaml.Pipeline, deps map[string]struct{}) error {
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for _, dep := range pipeline.DependsOn {
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_, ok := deps[dep]
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if !ok {
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return ErrMissingPipelineDependency
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}
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if pipeline.Name == dep {
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return ErrPipelineSelfDependency
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}
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}
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return nil
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}
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