114 lines
2.9 KiB
Go
114 lines
2.9 KiB
Go
/*
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Copyright 2021 The Dapr Authors
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package ipfs
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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ipfsFiles "github.com/ipfs/go-ipfs-files"
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ipfsOptions "github.com/ipfs/interface-go-ipfs-core/options"
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"github.com/multiformats/go-multihash"
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"github.com/mitchellh/mapstructure"
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"github.com/dapr/components-contrib/bindings"
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)
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// Handler for the "add" operation, which adds a new file
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func (b *IPFSBinding) addOperation(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
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if len(req.Data) == 0 {
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return nil, errors.New("data is empty")
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}
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reqMetadata := &addRequestMetadata{}
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err := reqMetadata.FromMap(req.Metadata)
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if err != nil {
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return nil, err
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}
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opts, err := reqMetadata.UnixfsAddOptions()
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if err != nil {
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return nil, err
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}
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f := ipfsFiles.NewBytesFile(req.Data)
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resolved, err := b.ipfsAPI.Unixfs().Add(ctx, f, opts...)
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if err != nil {
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return nil, err
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}
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res := addOperationResponse{
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Path: resolved.String(),
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}
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enc, err := json.Marshal(res)
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if err != nil {
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return nil, err
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}
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return &bindings.InvokeResponse{
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Data: enc,
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Metadata: nil,
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}, nil
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}
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type addOperationResponse struct {
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Path string `json:"path"`
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}
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type addRequestMetadata struct {
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CidVersion *int `mapstructure:"cidVersion"`
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Pin *bool `mapstructure:"pin"`
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Hash *string `mapstructure:"hash"`
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Inline *bool `mapstructure:"inline"`
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InlineLimit *int `mapstructure:"inlineLimit"`
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}
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func (m *addRequestMetadata) FromMap(mp map[string]string) (err error) {
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if len(mp) > 0 {
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err = mapstructure.WeakDecode(mp, m)
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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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return nil
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}
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func (m *addRequestMetadata) UnixfsAddOptions() ([]ipfsOptions.UnixfsAddOption, error) {
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opts := []ipfsOptions.UnixfsAddOption{}
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if m.CidVersion != nil {
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opts = append(opts, ipfsOptions.Unixfs.CidVersion(*m.CidVersion))
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}
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if m.Pin != nil {
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opts = append(opts, ipfsOptions.Unixfs.Pin(*m.Pin))
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} else {
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opts = append(opts, ipfsOptions.Unixfs.Pin(true))
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}
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if m.Hash != nil {
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hash, ok := multihash.Names[*m.Hash]
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if !ok {
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return nil, fmt.Errorf("invalid hash %s", *m.Hash)
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}
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opts = append(opts, ipfsOptions.Unixfs.Hash(hash))
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}
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if m.Inline != nil {
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opts = append(opts, ipfsOptions.Unixfs.Inline(*m.Inline))
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}
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if m.InlineLimit != nil {
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opts = append(opts, ipfsOptions.Unixfs.InlineLimit(*m.InlineLimit))
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}
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return opts, nil
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}
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