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9eaf824398
* add jaeger support, link hot container & req span * adds jaeger support now with FN_JAEGER_URL, there's a simple tutorial in the operating/metrics.md file now and it's pretty easy to get up and running. * links a hot request span to a hot container span. when we change this to sample at a lower ratio we'll need to finagle the hot container span to always sample or something, otherwise we'll hide that info. at least, since we're sampling at 100% for now if this is flipped on, can see freeze/unfreeze etc. if they hit. this is useful for debugging. note that zipkin's exporter does not follow the link at all, hence jaeger... and they're backed by the Cloud Empire now (CNCF) so we'll probably use it anyway. * vendor: add thrift for jaeger
63 lines
2.2 KiB
Go
63 lines
2.2 KiB
Go
// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package internal supports the options and transport packages.
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package internal
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import (
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"errors"
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"net/http"
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"golang.org/x/oauth2"
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"golang.org/x/oauth2/google"
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"google.golang.org/grpc"
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)
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// DialSettings holds information needed to establish a connection with a
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// Google API service.
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type DialSettings struct {
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Endpoint string
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Scopes []string
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TokenSource oauth2.TokenSource
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Credentials *google.DefaultCredentials
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CredentialsFile string // if set, Token Source is ignored.
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UserAgent string
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APIKey string
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HTTPClient *http.Client
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GRPCDialOpts []grpc.DialOption
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GRPCConn *grpc.ClientConn
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NoAuth bool
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}
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// Validate reports an error if ds is invalid.
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func (ds *DialSettings) Validate() error {
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hasCreds := ds.APIKey != "" || ds.TokenSource != nil || ds.CredentialsFile != "" || ds.Credentials != nil
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if ds.NoAuth && hasCreds {
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return errors.New("options.WithoutAuthentication is incompatible with any option that provides credentials")
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}
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// Credentials should not appear with other options.
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// We currently allow TokenSource and CredentialsFile to coexist.
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// TODO(jba): make TokenSource & CredentialsFile an error (breaking change).
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if ds.Credentials != nil && (ds.APIKey != "" || ds.TokenSource != nil || ds.CredentialsFile != "") {
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return errors.New("multiple credential options provided")
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}
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if ds.HTTPClient != nil && ds.GRPCConn != nil {
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return errors.New("WithHTTPClient is incompatible with WithGRPCConn")
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}
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if ds.HTTPClient != nil && ds.GRPCDialOpts != nil {
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return errors.New("WithHTTPClient is incompatible with gRPC dial options")
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}
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return nil
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}
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