mirror of
https://github.com/letic/terraform-provider-google.git
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961c878e0d
Switch to using Go modules. This migrates our vendor.json to use Go 1.11's modules system, and replaces the vendor folder with the output of go mod vendor. The vendored code should remain basically the same; I believe some tree shaking of packages and support scripts/licenses/READMEs/etc. happened. This also fixes Travis and our Makefile to no longer use govendor.
101 lines
3.0 KiB
Go
101 lines
3.0 KiB
Go
package jsonutil
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import (
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"bytes"
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"compress/gzip"
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"encoding/json"
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"fmt"
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"io"
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"github.com/hashicorp/errwrap"
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"github.com/hashicorp/vault/helper/compressutil"
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)
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// Encodes/Marshals the given object into JSON
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func EncodeJSON(in interface{}) ([]byte, error) {
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if in == nil {
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return nil, fmt.Errorf("input for encoding is nil")
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}
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var buf bytes.Buffer
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enc := json.NewEncoder(&buf)
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if err := enc.Encode(in); err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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// EncodeJSONAndCompress encodes the given input into JSON and compresses the
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// encoded value (using Gzip format BestCompression level, by default). A
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// canary byte is placed at the beginning of the returned bytes for the logic
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// in decompression method to identify compressed input.
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func EncodeJSONAndCompress(in interface{}, config *compressutil.CompressionConfig) ([]byte, error) {
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if in == nil {
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return nil, fmt.Errorf("input for encoding is nil")
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}
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// First JSON encode the given input
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encodedBytes, err := EncodeJSON(in)
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if err != nil {
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return nil, err
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}
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if config == nil {
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config = &compressutil.CompressionConfig{
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Type: compressutil.CompressionTypeGzip,
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GzipCompressionLevel: gzip.BestCompression,
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}
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}
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return compressutil.Compress(encodedBytes, config)
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}
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// DecodeJSON tries to decompress the given data. The call to decompress, fails
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// if the content was not compressed in the first place, which is identified by
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// a canary byte before the compressed data. If the data is not compressed, it
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// is JSON decoded directly. Otherwise the decompressed data will be JSON
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// decoded.
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func DecodeJSON(data []byte, out interface{}) error {
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if data == nil || len(data) == 0 {
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return fmt.Errorf("'data' being decoded is nil")
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}
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if out == nil {
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return fmt.Errorf("output parameter 'out' is nil")
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}
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// Decompress the data if it was compressed in the first place
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decompressedBytes, uncompressed, err := compressutil.Decompress(data)
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if err != nil {
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return errwrap.Wrapf("failed to decompress JSON: {{err}}", err)
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}
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if !uncompressed && (decompressedBytes == nil || len(decompressedBytes) == 0) {
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return fmt.Errorf("decompressed data being decoded is invalid")
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}
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// If the input supplied failed to contain the compression canary, it
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// will be notified by the compression utility. Decode the decompressed
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// input.
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if !uncompressed {
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data = decompressedBytes
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}
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return DecodeJSONFromReader(bytes.NewReader(data), out)
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}
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// Decodes/Unmarshals the given io.Reader pointing to a JSON, into a desired object
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func DecodeJSONFromReader(r io.Reader, out interface{}) error {
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if r == nil {
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return fmt.Errorf("'io.Reader' being decoded is nil")
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}
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if out == nil {
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return fmt.Errorf("output parameter 'out' is nil")
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}
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dec := json.NewDecoder(r)
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// While decoding JSON values, interpret the integer values as `json.Number`s instead of `float64`.
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dec.UseNumber()
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// Since 'out' is an interface representing a pointer, pass it to the decoder without an '&'
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return dec.Decode(out)
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}
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