[Internal]Thin Client Integration: Adds ThinProxy endpoint in account properties after retrieval from Gateway.

[aavasthy]

Pull Request Template

Description

The goal of this task is to fetch the thin proxy endpoint from gateway, so that from the .NET sdk side, we could remove the dependency on the hard coded thin proxy endpoint.

Updating the AccountProperties class to capture the thin proxy endpoint from thinClientWritableLocations property.
Have tested the change end to end against thinclient stag endpoint.

Currently the GW-SDK contract with thinclient enabled is like this but once thinclient is live the endpoint value will be retrieved via readableLocations and writableLocations.

{
	"_self": "",
	"id": "sumanttest4-westeurope",
	"_rid": "sumanttest4-westeurope.sql.cosmos.windows-int.net",
	"media": "//media/",
	"addresses": "//addresses/",
	"_dbs": "//dbs/",
	"writableLocations": [
		{
			"name": "West Europe",
			"databaseAccountEndpoint": "https://sumanttest4-westeurope.documents-test.windows-int.net:443/"
		}
	],
	"readableLocations": [
		{
			"name": "West Europe",
			"databaseAccountEndpoint": "https://sumanttest4-westeurope.documents-test.windows-int.net:443/"
		}
	],
	"enableMultipleWriteLocations": false,
	"continuousBackupEnabled": false,
	"enableNRegionSynchronousCommit": false,
	"userReplicationPolicy": {
		"asyncReplication": false,
		"minReplicaSetSize": 2,
		"maxReplicasetSize": 4
	},
	"userConsistencyPolicy": {
		"defaultConsistencyLevel": "Session"
	},
	"systemReplicationPolicy": {
		"minReplicaSetSize": 3,
		"maxReplicasetSize": 4
	},
	"readPolicy": {
		"primaryReadCoefficient": 1,
		"secondaryReadCoefficient": 1
	},
	"queryEngineConfiguration": "{\"allowNewKeywords\":true,\"maxJoinsPerSqlQuery\":10,\"maxQueryRequestTimeoutFraction\":0.9,\"maxSqlQueryInputLength\":524288,\"maxUdfRefPerSqlQuery\":10,\"queryMaxInMemorySortDocumentCount\":-1000,\"spatialMaxGeometryPointCount\":256,\"sqlAllowNonFiniteNumbers\":false,\"sqlDisableOptimizationFlags\":0,\"sqlQueryILDisableOptimizationFlags\":0,\"clientDisableOptimisticDirectExecution\":false,\"queryEnableFullText\":false,\"enableSpatialIndexing\":true,\"maxInExpressionItemsCount\":2147483647,\"maxLogicalAndPerSqlQuery\":2147483647,\"maxLogicalOrPerSqlQuery\":2147483647,\"maxSpatialQueryCells\":2147483647,\"sqlAllowAggregateFunctions\":true,\"sqlAllowGroupByClause\":true,\"sqlAllowLike\":true,\"sqlAllowSubQuery\":true,\"sqlAllowScalarSubQuery\":true,\"sqlAllowTop\":true}",
	"**thinClientWritableLocations**": [
		{
			"name": "West Europe",
			"databaseAccountEndpoint": "https://sumanttest4-westeurope.documents-test.windows-int.net:10650/"
		}
	],
	"**thinClientReadableLocations**": [
		{
			"name": "West Europe",
			"databaseAccountEndpoint": "https://sumanttest4-westeurope.documents-test.windows-int.net:10650/"
		}
	]
}

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Closing issues

To automatically close an issue: closes #4999

[github-actions]

All good!

[FabianMeiswinkel]

LGTM - Thx

[FabianMeiswinkel]

LGTM - Thx

[kundadebdatta]

LGTM Now!