Can I create a SessionsClient while explicitly passing a service_account.json?

[m90]

I'd like to create a dialogflow.SessionsClient without having to define GOOGLE_APPLICATION_CREDENTIALS (as I'm consuming the package in another library).

Reading this document tells me I should be able to use a method like from_service_account_json to instantiate my client, but the library does not seem to expose such method.

I also looked at google.auth.credentials in order to pass acredentials arg to the constructor, but it looks like it doesn't know how to do this either.

Is there any way of passing the location of a credentials file to the SessionsClient constructor? Or could I read the file myself and create an instance of google.auth.credentials.Credentials myself?

[taempark]

Yes. you can use like this:

from google.oauth2 import service_account
dialogflow_key = json.load(open('<service_account_path.json>'))
credentials = (service_account.Credentials.from_service_account_info(dialogflow_key))
session_client = dialogflow_v2.SessionsClient(credentials=credentials)

[m90]

@taeminpark thanks! I actually ended up doing it quite similarly, but without reading the file myself:

from google.oauth2.service_account import Credentials
credentials = Credentials.from_service_account_file('<service_account_json>')
session_client = dialogflow_v2.SessionsClient(credentials=credentials)

[taempark]

Nice! I also have to raise an issue but it seems to DialogFlow team is not reading issues...

[crwilcox]

The comment above specifies the correct way to do this #71 (comment)

[aaronamelgar]

How do we do this without storing private key JSON on the repo?

In the node package we can do something like this, but I haven't been able to do this.

class DialogFlow {
constructor (projectId) {
this.projectId = projectId
let privateKey = (process.env.NODE_ENV=="production") ? JSON.parse(process.env.DIALOGFLOW_PRIVATE_KEY) : process.env.DIALOGFLOW_PRIVATE_KEY
let clientEmail = process.env.DIALOGFLOW_CLIENT_EMAIL
let config = {
credentials: {
private_key: privateKey,
client_email: clientEmail
}
}
this.sessionClient = new dialogflow.SessionsClient(config)
}

This is the code I tried but the formatting is not correct because I am getting errors

key = os.environ.get('DF_PRIVATE_KEY')
key = key.split("\n")
del key[-1]
del key[0]
df_key = "".join(key) #cleans private key from /n
config = {credentials : {'private_key'=df_key, 'client_email': os.environ.get('DF_CLIENT_EMAIL')}}
session_client = dialogflow.SessionsClient(config)