Method initParsedTargetAndResolverBuilder

clientconn.go:1836–1873

initParsedTargetAndResolverBuilder parses the user's dial target and stores the parsed target in `cc.parsedTarget`. The resolver to use is determined based on the scheme in the parsed target and the same is stored in `cc.resolverBuilder`. Doesn't grab cc.mu as this method is expected to be called

()

//
// Doesn't grab cc.mu as this method is expected to be called only at Dial time.
func (cc *ClientConn) initParsedTargetAndResolverBuilder() error {
	logger.Infof("original dial target is: %q", cc.target)

	var rb resolver.Builder
	parsedTarget, err := parseTarget(cc.target)
	if err == nil {
		rb = cc.getResolver(parsedTarget.URL.Scheme)
		if rb != nil {
			cc.parsedTarget = parsedTarget
			cc.resolverBuilder = rb
			return nil
		}
	}

	// We are here because the user's dial target did not contain a scheme or
	// specified an unregistered scheme. We should fallback to the default
	// scheme, except when a custom dialer is specified in which case, we should
	// always use passthrough scheme. For either case, we need to respect any overridden
	// global defaults set by the user.
	defScheme := cc.dopts.defaultScheme
	if internal.UserSetDefaultScheme {
		defScheme = resolver.GetDefaultScheme()
	}

	canonicalTarget := defScheme + ":///" + cc.target

	parsedTarget, err = parseTarget(canonicalTarget)
	if err != nil {
		return err
	}
	rb = cc.getResolver(parsedTarget.URL.Scheme)
	if rb == nil {
		return fmt.Errorf("could not get resolver for default scheme: %q", parsedTarget.URL.Scheme)
	}
	cc.parsedTarget = parsedTarget
	cc.resolverBuilder = rb
	return nil
}

// parseTarget uses RFC 3986 semantics to parse the given target into a
// resolver.Target struct containing url. Query params are stripped from the