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ipfs.go
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ipfs.go
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package clients
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"strings"
"time"
"github.com/golang/glog"
)
const (
pinataBaseUrl = "https://api.pinata.cloud"
jsonMimeType = "application/json"
pinataOptions = `{"cidVersion":1}`
)
type PinInfo struct {
ID string `json:"id"`
IPFSPinHash string `json:"ipfs_pin_hash"`
Size int64 `json:"size"`
Metadata struct {
Name string `json:"name"`
KeyValues map[string]string `json:"keyvalues"`
} `json:"metadata"`
}
type PinList struct {
Count int64 `json:"count"`
Pins []PinInfo `json:"rows"`
}
type IPFS interface {
PinContent(ctx context.Context, name, contentType string, data io.Reader) (cid string, metadata interface{}, err error)
Unpin(ctx context.Context, cid string) error
List(ctx context.Context, pageSize, pageOffset int) (*PinList, int, error)
}
func NewPinataClientJWT(jwt string, filesMetadata map[string]string) IPFS {
return &pinataClient{
BaseClient: BaseClient{
BaseUrl: pinataBaseUrl,
BaseHeaders: map[string]string{
"Authorization": "Bearer " + jwt,
},
},
filesMetadata: marshalFilesMetadata(filesMetadata),
}
}
func NewPinataClientAPIKey(apiKey, apiSecret string, filesMetadata map[string]string) IPFS {
return &pinataClient{
BaseClient: BaseClient{
BaseUrl: pinataBaseUrl,
BaseHeaders: map[string]string{
"pinata_api_key": apiKey,
"pinata_secret_api_key": apiSecret,
},
},
filesMetadata: marshalFilesMetadata(filesMetadata),
}
}
type pinataClient struct {
BaseClient
filesMetadata []byte
}
type uploadResponse struct {
IPFSHash string `json:"ipfsHash"`
PinSize int64 `json:"pinSize"`
Timestamp time.Time `json:"timestamp"`
IsDuplicate bool `json:"isDuplicate"`
}
func (p *pinataClient) PinContent(ctx context.Context, filename, fileContentType string, data io.Reader) (string, interface{}, error) {
parts := []part{
{"file", filename, fileContentType, data},
{"pinataOptions", "", jsonMimeType, strings.NewReader(pinataOptions)},
}
if p.filesMetadata != nil {
parts = append(parts, part{"pinataMetadata", "", jsonMimeType, bytes.NewReader(p.filesMetadata)})
}
body, contentType := multipartBody(parts)
defer body.Close()
var res *uploadResponse
err := p.DoRequest(ctx, Request{
Method: "POST",
URL: "/pinning/pinFileToIPFS",
Body: body,
ContentType: contentType,
}, &res)
if err != nil {
return "", nil, err
}
return res.IPFSHash, res, nil
}
func (p *pinataClient) Unpin(ctx context.Context, cid string) error {
return p.DoRequest(ctx, Request{
Method: "DELETE",
URL: "/pinning/unpin/" + cid,
}, nil)
}
func (p *pinataClient) List(ctx context.Context, pageSize, pageOffset int) (pl *PinList, next int, err error) {
err = p.DoRequest(ctx, Request{
Method: "GET",
URL: fmt.Sprintf("/data/pinList?status=pinned&pageLimit=%d&pageOffset=%d", pageSize, pageOffset),
}, &pl)
if err != nil {
return nil, -1, err
}
next = -1
if len(pl.Pins) >= pageSize {
next = pageOffset + len(pl.Pins)
}
return pl, next, err
}
func marshalFilesMetadata(keyvalues map[string]string) []byte {
if len(keyvalues) == 0 {
return nil
}
metadata := map[string]interface{}{"keyvalues": keyvalues}
bytes, err := json.Marshal(metadata)
if err != nil {
glog.Warningf("Error marshalling Piñata files metadata: err=%q", err)
return nil
}
return bytes
}