Saving Point to a Google Fitness API (fitness.body.write) - ruby

Question

Im trying to save a Point with float value into fitness.body.
Getting value is not a problem, while saving a new point causes 403. No permission to modify data for this source.
Im using DataSetId derived:com.google.weight:com.google.android.gms:merge_weight to find point and read value, and raw:com.google.weight:com.google.android.apps.fitness:user_input to insert data.
.
Here is a workflow using Ruby and google-api-ruby-client:
require 'google/api_client'
require 'google/api_client/client_secrets'
require 'google/api_client/auth/installed_app'
require 'pry'
# Initialize the client.
client = Google::APIClient.new(
:application_name => 'Example Ruby application',
:application_version => '1.0.0'
)
fitness = client.discovered_api('fitness')
# Load client secrets from your client_secrets.json.
client_secrets = Google::APIClient::ClientSecrets.load
flow = Google::APIClient::InstalledAppFlow.new(
:client_id => client_secrets.client_id,
:client_secret => client_secrets.client_secret,
:scope => ['https://www.googleapis.com/auth/fitness.body.write',
'https://www.googleapis.com/auth/fitness.activity.write',
'https://www.googleapis.com/auth/fitness.location.write']
)
client.authorization = flow.authorize
Forming my new data Point:
dataSourceId = 'raw:com.google.weight:com.google.android.apps.fitness:user_input'
startTime = (Time.now-1).to_i # 1 Second ago
endTime = (Time.now).to_i
metadata = {
dataSourceId: dataSourceId,
maxEndTimeNs: "#{startTime}000000000", # Faking nanoseconds with tailing zeros
minStartTimeNs: "#{endTime}000000000",
point: [
{
endTimeNanos: "#{endTime}000000000",
startTimeNanos: "#{startTime}000000000",
value: [
{ fpVal: 80 }
]
}
]
}
Attempting to save the point:
result = client.execute(
:api_method => fitness.users.data_sources.datasets.patch,
:body_object => metadata,
:parameters => {
'userId' => "me",
'dataSourceId' => dataSourceId,
'datasetId' => "#{Time.now.to_i-1}000000000-#{(Time.now).to_i}000000000"
}
)
And as I indicated previously im getting 403. No permission to modify data for this source
#<Google::APIClient::Schema::Fitness::V1::Dataset:0x3fe78c258f60 DATA:{"error"=>{"er
rors"=>[{"domain"=>"global", "reason"=>"forbidden", "message"=>"No permission to modif
y data for this source."}], "code"=>403, "message"=>"No permission to modify data for
this source."}}>
I believe, I selected all required permissions in the scope. I tried submitting the point to both accessible datasetid's for fitness.body.
Please let me know if im doing anything wrong here.
Thank you!

Answer 1

I encountered the same situation, turns out you can NOT insert data points directly into the datasource "raw:com.google.weight:com.google.android.apps.fitness:user_input". From the name, one might guess out this datasource is reserved. So the workaround is to add your own datasource, note should with dataType.name="com.google.weight", like this:
{
"dataStreamName": "xxxx.body.weight",
"dataType": {
"field": [
{
"name": "weight",
"format": "floatPoint"
}
],
"name": "com.google.weight"
},
"dataQualityStandard": [],
"application": {
"version": "1",
"name": "Foo Example App",
"detailsUrl": "http://example.com"
},
"device": {
"model": "xxxmodel",
"version": "1",
"type": "scale",
"uid": "xxx#yyy",
"manufacturer": "xxxxManufacturer"
},
"type": "derived"
}
then after the successful creation, you can use this datasource(datastream id) to insert your own data points, and then the inserted data points will also be included in the datasource "derived:com.google.weight:com.google.android.gms:merge_weight" when you do the querying with suffix "dataPointChanges".

Answer 2

Try adding an Authorization header:
result = client.execute(
:api_method => fitness.users.data_sources.datasets.patch,
:headers => {'Authorization' => 'Bearer YOUR_AUTH_TOKEN'},
:body_object => metadata,
:parameters => {
'userId' => "me",
'dataSourceId' => dataSourceId,
'datasetId' => "#{Time.now.to_i-1}000000000-#{(Time.now).to_i}000000000"
}
)