TclCurl DELETE request (using -customrequest)

package require TclCurl

proc httpBlobDelete {url} {
    set curlHandle [curl::init]
    $curlHandle configure -url $url -customrequest DELETE
    catch { $curlHandle perform } curlErrorNumber
    if { $curlErrorNumber != 0 } {
        return -code error [curl::easystrerror $curlErrorNumber]
    }
    
    set responsecode [$curlHandle getinfo responsecode]
    $curlHandle cleanup
    
    if {$responsecode == 204} {
        return -code ok
    } elseif {$responsecode == 404} {
        return -code error "Not Found"
    } else {
            return -code error "ERROR"
    }
}

用來測試 CrateDB REST API 中 BLOB delete 的程式。

如果 TclCurl 要指定 DELETE request，使用 -customrequest 來指定。因為 CrateDB 會回傳 status code 來表示檔案已成功刪除 (204)，或者是沒有這個檔案 (404)，所以取得 responsecode 以後判斷。大致上是這樣。


更新：
CrateDB 加入 BLOB 資料使用 PUT，下面是測試的程式：

package require TclCurl

proc httpBlobPut {url data} {
    set curlHandle [curl::init]
    $curlHandle configure -url $url -customrequest PUT -postfields $data
    catch { $curlHandle perform } curlErrorNumber
    if { $curlErrorNumber != 0 } {
        return -code error [curl::easystrerror $curlErrorNumber]
    }
    
    set responsecode [$curlHandle getinfo responsecode]
    $curlHandle cleanup
    
    if {$responsecode == 201} {
        return -code ok
    } elseif {$responsecode == 409} {
        return -code error "Conflict"
    } else {
            return -code error "ERROR"
    }
}

使用 GET 讀取內容：

proc httpBlobGet {url} {
    set curlHandle [curl::init]
    $curlHandle configure -url $url -bodyvar html
    catch { $curlHandle perform } curlErrorNumber
    if { $curlErrorNumber != 0 } {
        return -code error [curl::easystrerror $curlErrorNumber]
    }
    
    set responsecode [$curlHandle getinfo responsecode]
    $curlHandle cleanup
    
    if {$responsecode == 200} {
        return -code ok $html
    } elseif {$responsecode == 404} {
        return -code error "Not Found"
    } else {
            return -code error "ERROR"
    }
}