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/*
* Original code from: https://github.com/opencontainers/runtime-spec/blob/643c1429d905bba70fe977bae274f367ad101e73/schema/validate.go
* Changes:
* - Output errors to stderr
* - Refactored to use package-internal validation library
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"flag"
"fmt"
"io/ioutil"
"os"
"github.com/container-orchestrated-devices/container-device-interface/schema"
)
const usage = `Validate is used to check document with specified schema.
You can use validate in following ways:
1.specify document file as an argument
validate --schema <schema.json> <document.json>
2.pass document content through a pipe
cat <document.json> | validate --schema <schema.json>
3.input document content manually, ended with ctrl+d(or your self-defined EOF keys)
validate --schema <schema.json>
[INPUT DOCUMENT CONTENT HERE]
`
func main() {
var (
schemaFile string
docFile string
docData []byte
err error
exitCode int
)
flag.Usage = func() {
fmt.Fprintf(flag.CommandLine.Output(), "%s\n", usage)
fmt.Fprintf(flag.CommandLine.Output(), "Usage of %s:\n", os.Args[0])
flag.PrintDefaults()
}
flag.StringVar(&schemaFile, "schema", "builtin", "JSON Schema to validate against")
flag.Parse()
if schemaFile != "" {
scm, err := schema.Load(schemaFile)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to load schema %s: %v\n", schemaFile, err)
os.Exit(1)
}
schema.Set(scm)
fmt.Printf("Validating against JSON schema %s...\n", schemaFile)
} else {
fmt.Printf("Validating against builtin JSON schema...\n")
}
docs := flag.Args()
if len(docs) == 0 {
docs = []string{"-"}
}
for _, docFile = range docs {
if docFile == "" || docFile == "-" {
docFile = "<stdin>"
docData, err = ioutil.ReadAll(os.Stdin)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to read document data from stdin: %v\n", err)
os.Exit(1)
}
err = schema.ValidateData(docData)
} else {
err = schema.ValidateFile(docFile)
}
if err != nil {
fmt.Fprintf(os.Stderr, "%s: validation failed:\n %v\n", docFile, err)
exitCode = 1
} else {
fmt.Printf("%s: document is valid.\n", docFile)
}
}
os.Exit(exitCode)
}
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