(Ruby) Dropbox File Streaming Upload

Upload a file to Drobox using a file stream. This example can upload files up to 150MB. Larger files must be uploaded with an upload session (upload_session/start).

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# A Dropbox access token should have been previously obtained.
# Dropbox access tokens do not expire.
# See Dropbox Access Token.

rest = Chilkat::CkRest.new()

# Connect to Dropbox
success = rest.Connect("content.dropboxapi.com",443,true,true)
if (success != true)
    print rest.lastErrorText() + "\n";
    exit
end

# Add request headers.
rest.AddHeader("Content-Type","application/octet-stream")
rest.AddHeader("Authorization","Bearer DROPBOX_ACCESS_TOKEN")

# The upload "parameters" contained in JSON passed in an HTTP request header.
# This is the JSON to be added in this example:
# { 
#    "path": "/Homework/lit/hamlet.xml",
#    "mode": "add",
#    "autorename": true,
#    "mute": false
# }

json = Chilkat::CkJsonObject.new()
json.AppendString("path","/Homework/lit/hamlet.xml")
json.AppendString("mode","add")
json.AppendBool("autorename",true)
json.AppendBool("mute",false)
rest.AddHeader("Dropbox-API-Arg",json.emit())

# Almost ready to go...
# Let's setup a file stream to point to a file.
fileStream = Chilkat::CkStream.new()
fileStream.put_SourceFile("qa_data/xml/hamlet.xml")

# Do the upload.  The URL is https://content.dropboxapi.com/2/files/upload.
# We already connected to content.dropboxapi.com using TLS (i.e. HTTPS),
# so now we only need to specify the path "/2/files/upload".

# Note: The file is streamed directly from disk.  (The entire
# file will not be loaded into memory.)
responseStr = rest.fullRequestStream("POST","/2/files/upload",fileStream)
if (rest.get_LastMethodSuccess() != true)
    print rest.lastErrorText() + "\n";
    exit
end

# When successful, Dropbox responds with a 200 response code.
if (rest.get_ResponseStatusCode() != 200)
    # Examine the request/response to see what happened.
    print "response status code = " + rest.get_ResponseStatusCode().to_s() + "\n";
    print "response status text = " + rest.responseStatusText() + "\n";
    print "response header: " + rest.responseHeader() + "\n";
    print "response body (if any): " + responseStr + "\n";
    print "---" + "\n";
    print "LastRequestStartLine: " + rest.lastRequestStartLine() + "\n";
    print "LastRequestHeader: " + rest.lastRequestHeader() + "\n";
    exit
end

# The response is JSON.
jsonResp = Chilkat::CkJsonObject.new()
jsonResp.put_EmitCompact(false)
jsonResp.Load(responseStr)

# Show the JSON response.
print jsonResp.emit() + "\n";

# Returns JSON that looks like this:
# { 
#   "name": "hamlet.xml",
#   "path_lower": "/homework/lit/hamlet.xml",
#   "path_display": "/Homework/lit/hamlet.xml",
#   "id": "id:74FkdeNuyKAAAAAAAAAAAQ",
#   "client_modified": "2016-06-02T23:19:00Z",
#   "server_modified": "2016-06-02T23:19:00Z",
#   "rev": "9482db15f",
#   "size": 279658
# }

# Sample code to get data from the JSON response:
size = jsonResp.IntOf("size")
print "size = " + size.to_s() + "\n";

rev = jsonResp.stringOf("rev")
print "rev = " + rev + "\n";

clientModified = jsonResp.stringOf("client_modified")
ckdt = Chilkat::CkDateTime.new()
ckdt.SetFromTimestamp(clientModified)
bLocalTime = true
# dt is a CkDtObj
dt = ckdt.GetDtObj(bLocalTime)
print dt.get_Day().to_s() + "/" + dt.get_Month().to_s() + "/" + dt.get_Year().to_s() + " " + dt.get_Hour().to_s() + 
    ":" + dt.get_Minute().to_s() + "\n";