⚡ gcloudzap

(experimental)

This package provides a zap logger that forwards entries to the Google Stackdriver Logging service as structured payloads.

This version has two main changes from the version fully created by jonstaryuk:

It lets one override the "stack" and "caller" fields to be sent to StackDriver with custom inputs.
It has versions of NewProduction() and NewDevelopment() [NewProductionWithOptions() and NewDevelopmentWithOptions()] that let you create a new client that will have GCP credentials other than those based on the APPLICATION_DEFAULT_PATH environment variable. Before you could do this with the New() function, but this way may be easier. If you don't need these feature, then use the main project: github.com/jonstaryuk/gcloudzap

Quickstart

Outside of Google Compute Engine, just add the environment variable GOOGLE_APPLICATION_CREDENTIALS with a path to a JSON credential file. For more info on this approach, see the docs.

Option 1: Less configuration

import "github.com/danielweidman/gcloudzap"

log, err := gcloudzap.NewDevelopment("your-project-id", "your-log-id")
if err != nil {
    panic(err)
}

log.Sugar().
    With("simple", true).
    With("foo", "bar").
    Info("This will get written to both stderr and Stackdriver Logging.")

Option 2: More flexibility

import (
    "go.uber.org/zap"
    "cloud.google.com/go/logging"
    "github.com/danielweidman/gcloudzap"
)

// Configure the pieces
client, err := logging.NewClient(...)
cfg := zap.Config{...}

// Create a logger
log, err := gcloudzap.New(cfg, client, "your-log-id", zap.Option(), ...)

Option 3: Most flexibility

import (
    "go.uber.org/zap/zapcore"
    "cloud.google.com/go/logging"
    "github.com/danielweidman/gcloudzap"
)

// Configure the pieces
client, err := logging.NewClient(...)
baseCore := zapcore.NewCore(...)

// Create a core
core := gcloudzap.Tee(baseCore, client, "your-log-id")