Golang Context.WriteHeader方法代碼示例

func handleEntry(ctx *web.Context, hash string) {
	type entry struct {
		ChainID string
		Content string
		ExtIDs  []string
	}

	e := new(entry)
	if entry, err := factomapi.EntryByHash(hash); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		e.ChainID = entry.ChainID.String()
		e.Content = hex.EncodeToString(entry.Content)
		for _, v := range entry.ExtIDs {
			e.ExtIDs = append(e.ExtIDs, hex.EncodeToString(v))
		}
	}

	if p, err := json.Marshal(e); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		ctx.Write(p)
	}
}

func HandleV2Error(ctx *web.Context, j *primitives.JSON2Request, err *primitives.JSONError) {
	resp := primitives.NewJSON2Response()
	if j != nil {
		resp.ID = j.ID
	} else {
		resp.ID = nil
	}
	resp.Error = err

	ctx.WriteHeader(httpBad)
	ctx.Write([]byte(resp.String()))
}

func handleGetRaw(ctx *web.Context, hashkey string) {
	type rawData struct {
		Data string
	}
	//TODO: var block common.BinaryMarshallable
	d := new(rawData)

	h, err := common.HexToHash(hashkey)
	if err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	}

	// try to find the block data in db and return the first one found
	if block, _ := dbase.FetchFBlockByHash(h); block != nil {
		bytes, _ := block.MarshalBinary()
		d.Data = hex.EncodeToString(bytes[:])
	} else if block, _ := dbase.FetchDBlockByHash(h); block != nil {
		bytes, _ := block.MarshalBinary()
		d.Data = hex.EncodeToString(bytes[:])
	} else if block, _ := dbase.FetchABlockByHash(h); block != nil {
		bytes, _ := block.MarshalBinary()
		d.Data = hex.EncodeToString(bytes[:])
	} else if block, _ := dbase.FetchDBlockByMR(h); block != nil {
		bytes, _ := block.MarshalBinary()
		d.Data = hex.EncodeToString(bytes[:])
	} else if block, _ := dbase.FetchEBlockByHash(h); block != nil {
		bytes, _ := block.MarshalBinary()
		d.Data = hex.EncodeToString(bytes[:])
	} else if block, _ := dbase.FetchEBlockByMR(h); block != nil {
		bytes, _ := block.MarshalBinary()
		d.Data = hex.EncodeToString(bytes[:])
	} else if block, _ := dbase.FetchECBlockByHash(h); block != nil {
		bytes, _ := block.MarshalBinary()
		d.Data = hex.EncodeToString(bytes[:])
	} else if block, _ := dbase.FetchEntryByHash(h); block != nil {
		bytes, _ := block.MarshalBinary()
		d.Data = hex.EncodeToString(bytes[:])
	}

	if p, err := json.Marshal(d); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		ctx.Write(p)
	}

	//	ctx.WriteHeader(httpOK)
}

func handleGetFee(ctx *web.Context) {
	type x struct{ Fee int64 }
	b := new(x)
	b.Fee = int64(common.FactoidState.GetFactoshisPerEC())
	if p, err := json.Marshal(b); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		return
	} else {
		ctx.Write(p)
	}
}

// True is success! False is failure.  The Response is what the CLI
// should report.
func reportResults(ctx *web.Context, response string, success bool) {
	b := Response{
		Response: response,
		Success:  success,
	}
	if p, err := json.Marshal(b); err != nil {

		ctx.WriteHeader(httpBad)
		return
	} else {
		ctx.ContentType("json")
		ctx.Write(p)
	}
}

func handleProperties(ctx *web.Context) {

	r := new(common.Properties)
	r.Factomd_Version = common.FACTOMD_VERSION
	r.Protocol_Version = btcd.ProtocolVersion

	if p, err := json.Marshal(r); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		ctx.Write(p)
	}
}

func handleV1Error(ctx *web.Context, err *primitives.JSONError) {
	/*
		if err.Data != nil {
			data, ok := err.Data.(string)
			if ok == true {
		ctx.WriteHeader(httpBad)
				returnMsg(ctx, "", false)
				return
			}
		}
		ctx.WriteHeader(httpBad)
		returnMsg(ctx,"", false)
		return
	*/
	ctx.WriteHeader(httpBad)
	return
}

func HandleCommitEntry(ctx *web.Context, name string) {
	data, err := ioutil.ReadAll(ctx.Request.Body)
	if err != nil {
		fmt.Println("Could not read from http request:", err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	}

	err = Wallet.CommitEntry(name, data)
	if err != nil {
		fmt.Println(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	}
}

func handleRevealEntry(ctx *web.Context) {
	type revealentry struct {
		Entry string
	}

	e := new(revealentry)
	if p, err := ioutil.ReadAll(ctx.Request.Body); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		if err := json.Unmarshal(p, e); err != nil {
			wsLog.Error(err)
			ctx.WriteHeader(httpBad)
			ctx.Write([]byte(err.Error()))
			return
		}
	}

	entry := common.NewEntry()
	if p, err := hex.DecodeString(e.Entry); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		_, err := entry.UnmarshalBinaryData(p)
		if err != nil {
			wsLog.Error(err)
			ctx.WriteHeader(httpBad)
			ctx.Write([]byte(err.Error()))
			return
		}
	}

	if err := factomapi.RevealEntry(entry); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	}

	//	ctx.WriteHeader(httpOK)
}

func handleCommitChain(ctx *web.Context) {
	type commitchain struct {
		CommitChainMsg string
	}

	c := new(commitchain)
	if p, err := ioutil.ReadAll(ctx.Request.Body); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		if err := json.Unmarshal(p, c); err != nil {
			wsLog.Error(err)
			ctx.WriteHeader(httpBad)
			ctx.Write([]byte(err.Error()))
			return
		}
	}

	commit := common.NewCommitChain()
	if p, err := hex.DecodeString(c.CommitChainMsg); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		_, err := commit.UnmarshalBinaryData(p)
		if err != nil {
			wsLog.Error(err)
			ctx.WriteHeader(httpBad)
			ctx.Write([]byte(err.Error()))
			return
		}
	}

	if err := factomapi.CommitChain(commit); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	}

}

func handleDirectoryBlock(ctx *web.Context, keymr string) {
	type eblockaddr struct {
		ChainID string
		KeyMR   string
	}

	type dblock struct {
		Header struct {
			PrevBlockKeyMR string
			SequenceNumber uint32
			Timestamp      uint32
		}
		EntryBlockList []eblockaddr
	}

	d := new(dblock)
	if block, err := factomapi.DBlockByKeyMR(keymr); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		d.Header.PrevBlockKeyMR = block.Header.PrevKeyMR.String()
		d.Header.SequenceNumber = block.Header.DBHeight
		d.Header.Timestamp = block.Header.Timestamp * 60
		for _, v := range block.DBEntries {
			l := new(eblockaddr)
			l.ChainID = v.ChainID.String()
			l.KeyMR = v.KeyMR.String()
			d.EntryBlockList = append(d.EntryBlockList, *l)
		}
	}

	if p, err := json.Marshal(d); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		ctx.Write(p)
	}

	//	ctx.WriteHeader(httpOK)
}

func handleChainHead(ctx *web.Context, chainid string) {
	type chead struct {
		ChainHead string
	}

	c := new(chead)
	if mr, err := factomapi.ChainHead(chainid); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		c.ChainHead = mr.String()
	}

	if p, err := json.Marshal(c); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		ctx.Write(p)
	}
}

func handleDirectoryBlockHeight(ctx *web.Context) {
	type dbheight struct {
		Height int
	}

	h := new(dbheight)
	if block, err := factomapi.DBlockHead(); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		h.Height = int(block.Header.DBHeight)
	}

	if p, err := json.Marshal(h); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		ctx.Write(p)
	}
}

func handleDirectoryBlockHead(ctx *web.Context) {
	type dbhead struct {
		KeyMR string
	}

	h := new(dbhead)
	if block, err := factomapi.DBlockHead(); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		h.KeyMR = block.KeyMR.String()
	}

	if p, err := json.Marshal(h); err != nil {
		wsLog.Error(err)
		ctx.WriteHeader(httpBad)
		ctx.Write([]byte(err.Error()))
		return
	} else {
		ctx.Write(p)
	}
}

// &key=<key>&name=<name or address>&amount=<amount>
// If no amount is specified, a zero is returned.
func getParams_(ctx *web.Context, params string, ec bool) (
	trans fct.ITransaction,
	key string,
	name string,
	address fct.IAddress,
	amount int64,
	ok bool) {

	key = ctx.Params["key"]
	name = ctx.Params["name"]
	StrAmount := ctx.Params["amount"]

	if len(StrAmount) == 0 {
		StrAmount = "0"
	}

	if len(key) == 0 || len(name) == 0 {
		str := fmt.Sprintln("Missing Parameters: key='", key, "' name='", name, "' amount='", StrAmount, "'")
		reportResults(ctx, str, false)
		ok = false
		return
	}

	msg, valid := ValidateKey(key)
	if !valid {
		reportResults(ctx, msg, false)
		ok = false
		return
	}

	amount, err := strconv.ParseInt(StrAmount, 10, 64)
	if err != nil {
		str := fmt.Sprintln("Error parsing amount.\n", err)
		reportResults(ctx, str, false)
		ok = false
		return
	}

	// Get the transaction
	trans, err = getTransaction(ctx, key)
	if err != nil {
		reportResults(ctx, "Failure to locate the transaction", false)
		ok = false
		return
	}

	// Get the input/output/ec address.  Which could be a name.  First look and see if it is
	// a name.  If it isn't, then look and see if it is an address.  Someone could
	// do a weird Address as a name and fool the code, but that seems unlikely.
	// Could check for that some how, but there are many ways around such checks.

	if len(name) <= fct.ADDRESS_LENGTH {
		we := Wallet.GetRaw([]byte(fct.W_NAME), []byte(name))
		if we != nil {
			address, err = we.(wallet.IWalletEntry).GetAddress()
			if we.(wallet.IWalletEntry).GetType() == "ec" {
				if !ec {
					reportResults(ctx, "Was Expecting a Factoid Address", false)
					ok = false
					return
				}
			} else {
				if ec {
					reportResults(ctx, "Was Expecting an Entry Credit Address", false)
					ok = false
					return
				}
			}
			if err != nil || address == nil {
				reportResults(ctx, "Should not get an error geting a address from a Wallet Entry", false)
				ok = false
				return
			}
			ok = true
			return
		}
	}
	if (!ec && !fct.ValidateFUserStr(name)) || (ec && !fct.ValidateECUserStr(name)) {
		reportResults(ctx, fmt.Sprintf("The address specified isn't defined or is invalid: %s", name), false)
		ctx.WriteHeader(httpBad)
		ok = false
		return
	}
	baddr := fct.ConvertUserStrToAddress(name)

	address = fct.NewAddress(baddr)

	ok = true
	return
}