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Add Golang client for Stellar RPC (#349)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| package client | ||
|
|
||
| import ( | ||
| "context" | ||
| "net/http" | ||
|
|
||
| "github.com/creachadair/jrpc2" | ||
| "github.com/creachadair/jrpc2/jhttp" | ||
|
|
||
| "github.com/stellar/stellar-rpc/protocol" | ||
| ) | ||
|
|
||
| type Client struct { | ||
| url string | ||
| cli *jrpc2.Client | ||
| httpClient *http.Client | ||
| } | ||
|
|
||
| func NewClient(url string, httpClient *http.Client) *Client { | ||
| c := &Client{url: url, httpClient: httpClient} | ||
| c.refreshClient() | ||
| return c | ||
| } | ||
|
|
||
| func (c *Client) Close() error { | ||
| return c.cli.Close() | ||
| } | ||
|
|
||
| func (c *Client) refreshClient() { | ||
| if c.cli != nil { | ||
| c.cli.Close() | ||
| } | ||
| var opts *jhttp.ChannelOptions | ||
| if c.httpClient != nil { | ||
| opts = &jhttp.ChannelOptions{ | ||
| Client: c.httpClient, | ||
| } | ||
| } | ||
| ch := jhttp.NewChannel(c.url, opts) | ||
| c.cli = jrpc2.NewClient(ch, nil) | ||
| } | ||
|
|
||
| func (c *Client) callResult(ctx context.Context, method string, params, result any) error { | ||
| err := c.cli.CallResult(ctx, method, params, result) | ||
| if err != nil { | ||
| // This is needed because of https://github.com/creachadair/jrpc2/issues/118 | ||
| c.refreshClient() | ||
| } | ||
| return err | ||
| } | ||
|
|
||
| func (c *Client) GetEvents(ctx context.Context, | ||
| request protocol.GetEventsRequest, | ||
| ) (protocol.GetEventsResponse, error) { | ||
| var result protocol.GetEventsResponse | ||
| err := c.callResult(ctx, protocol.GetEventsMethodName, request, &result) | ||
| if err != nil { | ||
| return protocol.GetEventsResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetFeeStats(ctx context.Context) (protocol.GetFeeStatsResponse, error) { | ||
| var result protocol.GetFeeStatsResponse | ||
| err := c.callResult(ctx, protocol.GetFeeStatsMethodName, nil, &result) | ||
| if err != nil { | ||
| return protocol.GetFeeStatsResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetHealth(ctx context.Context) (protocol.GetHealthResponse, error) { | ||
| var result protocol.GetHealthResponse | ||
| err := c.callResult(ctx, protocol.GetHealthMethodName, nil, &result) | ||
| if err != nil { | ||
| return protocol.GetHealthResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetLatestLedger(ctx context.Context) (protocol.GetLatestLedgerResponse, error) { | ||
| var result protocol.GetLatestLedgerResponse | ||
| err := c.callResult(ctx, protocol.GetLatestLedgerMethodName, nil, &result) | ||
| if err != nil { | ||
| return protocol.GetLatestLedgerResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetLedgerEntries(ctx context.Context, | ||
| request protocol.GetLedgerEntriesRequest, | ||
| ) (protocol.GetLedgerEntriesResponse, error) { | ||
| var result protocol.GetLedgerEntriesResponse | ||
| err := c.callResult(ctx, protocol.GetLedgerEntriesMethodName, request, &result) | ||
| if err != nil { | ||
| return protocol.GetLedgerEntriesResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetLedgers(ctx context.Context, | ||
| request protocol.GetLedgersRequest, | ||
| ) (protocol.GetLedgersResponse, error) { | ||
| var result protocol.GetLedgersResponse | ||
| err := c.callResult(ctx, protocol.GetLedgersMethodName, request, &result) | ||
| if err != nil { | ||
| return protocol.GetLedgersResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetNetwork(ctx context.Context, | ||
| ) (protocol.GetNetworkResponse, error) { | ||
| // phony | ||
| var request protocol.GetNetworkRequest | ||
| var result protocol.GetNetworkResponse | ||
| err := c.callResult(ctx, protocol.GetNetworkMethodName, request, &result) | ||
| if err != nil { | ||
| return protocol.GetNetworkResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetTransaction(ctx context.Context, | ||
| request protocol.GetTransactionRequest, | ||
| ) (protocol.GetTransactionResponse, error) { | ||
| var result protocol.GetTransactionResponse | ||
| err := c.callResult(ctx, protocol.GetTransactionMethodName, request, &result) | ||
| if err != nil { | ||
| return protocol.GetTransactionResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetTransactions(ctx context.Context, | ||
| request protocol.GetTransactionsRequest, | ||
| ) (protocol.GetTransactionsResponse, error) { | ||
| var result protocol.GetTransactionsResponse | ||
| err := c.callResult(ctx, protocol.GetTransactionsMethodName, request, &result) | ||
| if err != nil { | ||
| return protocol.GetTransactionsResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) GetVersionInfo(ctx context.Context) (protocol.GetVersionInfoResponse, error) { | ||
| var result protocol.GetVersionInfoResponse | ||
| err := c.callResult(ctx, protocol.GetVersionInfoMethodName, nil, &result) | ||
| if err != nil { | ||
| return protocol.GetVersionInfoResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
||
| func (c *Client) SendTransaction(ctx context.Context, | ||
| request protocol.SendTransactionRequest, | ||
| ) (protocol.SendTransactionResponse, error) { | ||
| var result protocol.SendTransactionResponse | ||
| err := c.callResult(ctx, protocol.SendTransactionMethodName, request, &result) | ||
| if err != nil { | ||
| return protocol.SendTransactionResponse{}, err | ||
| } | ||
| return result, nil | ||
| } | ||
|
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| func (c *Client) SimulateTransaction(ctx context.Context, | ||
| request protocol.SimulateTransactionRequest, | ||
| ) (protocol.SimulateTransactionResponse, error) { | ||
| var result protocol.SimulateTransactionResponse | ||
| err := c.callResult(ctx, protocol.SimulateTransactionMethodName, request, &result) | ||
| if err != nil { | ||
| return protocol.SimulateTransactionResponse{}, err | ||
| } | ||
| return result, nil | ||
| } |
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