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servers_diff.go
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servers_diff.go
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package diff
import (
"github.com/getkin/kin-openapi/openapi3"
"github.com/treeverse/oasdiff/utils"
)
// ServersDiff describes the changes between a pair of sets of encoding objects: https://swagger.io/specification/#server-object
type ServersDiff struct {
Added utils.StringList `json:"added,omitempty" yaml:"added,omitempty"`
Deleted utils.StringList `json:"deleted,omitempty" yaml:"deleted,omitempty"`
Modified ModifiedServers `json:"modified,omitempty" yaml:"modified,omitempty"`
}
// ModifiedServers is map of server names to their respective diffs
type ModifiedServers map[string]*ServerDiff
// Empty indicates whether a change was found in this element
func (diff *ServersDiff) Empty() bool {
if diff == nil {
return true
}
return len(diff.Added) == 0 &&
len(diff.Deleted) == 0 &&
len(diff.Modified) == 0
}
func newServersDiff() *ServersDiff {
return &ServersDiff{
Added: utils.StringList{},
Deleted: utils.StringList{},
Modified: ModifiedServers{},
}
}
func getServersDiff(config *Config, state *state, pServers1, pServers2 *openapi3.Servers) *ServersDiff {
diff := getServersDiffInternal(config, state, pServers1, pServers2)
if diff.Empty() {
return nil
}
return diff
}
func getServersDiffInternal(config *Config, state *state, pServers1, pServers2 *openapi3.Servers) *ServersDiff {
result := newServersDiff()
servers1 := derefServers(pServers1)
servers2 := derefServers(pServers2)
for _, server1 := range servers1 {
if server2 := findServer(server1, servers2); server2 != nil {
if diff := getServerDiff(config, state, server1, server2); !diff.Empty() {
result.Modified[server1.URL] = diff
}
} else {
result.Deleted = append(result.Deleted, server1.URL)
}
}
for _, server2 := range servers2 {
if server1 := findServer(server2, servers1); server1 == nil {
result.Added = append(result.Added, server2.URL)
}
}
return result
}
func derefServers(servers *openapi3.Servers) openapi3.Servers {
if servers == nil {
return openapi3.Servers{}
}
return *servers
}
func findServer(server1 *openapi3.Server, servers2 openapi3.Servers) *openapi3.Server {
// TODO: optimize with a map
for _, server2 := range servers2 {
if server2.URL == server1.URL {
return server2
}
}
return nil
}
func (diff *ServersDiff) getSummary() *SummaryDetails {
return &SummaryDetails{
Added: len(diff.Added),
Deleted: len(diff.Deleted),
Modified: len(diff.Modified),
}
}