Package documentai is an auto-generated package for the Cloud Document AI API.
Service to parse structured information from unstructured or semi-structured documents using state-of-the-art Google AI such as natural language, computer vision, translation, and AutoML.
Example usage
To get started with this package, create a client.
ctx := context . Background () c , err := documentai . NewDocumentProcessorClient ( ctx ) if err != nil { // TODO: Handle error. } defer c . Close ()
The client will use your default application credentials. Clients should be reused instead of created as needed. The methods of Client are safe for concurrent use by multiple goroutines. The returned client must be Closed when it is done being used.
Using the Client
The following is an example of making an API call with the newly created client.
ctx := context . Background () c , err := documentai . NewDocumentProcessorClient ( ctx ) if err != nil { // TODO: Handle error. } defer c . Close () req := & documentaipb . ProcessRequest { // TODO: Fill request struct fields. // See https://pkg.go.dev/google.golang.org/genproto/googleapis/cloud/documentai/v1#ProcessRequest. } resp , err := c . ProcessDocument ( ctx , req ) if err != nil { // TODO: Handle error. } // TODO: Use resp. _ = resp
Use of Context
The ctx passed to NewClient is used for authentication requests and for creating the underlying connection, but is not used for subsequent calls. Individual methods on the client use the ctx given to them.
To close the open connection, use the Close() method.
For information about setting deadlines, reusing contexts, and more please visit https://pkg.go.dev/cloud.google.com/go .
Functions
func DefaultAuthScopes
func
DefaultAuthScopes
()
[]
string
DefaultAuthScopes reports the default set of authentication scopes to use with this package.
BatchProcessDocumentsOperation
type
BatchProcessDocumentsOperation
struct
{
// contains filtered or unexported fields
}
BatchProcessDocumentsOperation manages a long-running operation from BatchProcessDocuments.
func (*BatchProcessDocumentsOperation) Done
func
(
op
*
BatchProcessDocumentsOperation
)
Done
()
bool
Done reports whether the long-running operation has completed.
func (*BatchProcessDocumentsOperation) Metadata
func
(
op
*
BatchProcessDocumentsOperation
)
Metadata
()
(
*
documentaipb
.
BatchProcessMetadata
,
error
)
Metadata returns metadata associated with the long-running operation. Metadata itself does not contact the server, but Poll does. To get the latest metadata, call this method after a successful call to Poll. If the metadata is not available, the returned metadata and error are both nil.
func (*BatchProcessDocumentsOperation) Name
func
(
op
*
BatchProcessDocumentsOperation
)
Name
()
string
Name returns the name of the long-running operation. The name is assigned by the server and is unique within the service from which the operation is created.
func (*BatchProcessDocumentsOperation) Poll
func
(
op
*
BatchProcessDocumentsOperation
)
Poll
(
ctx
context
.
Context
,
opts
...
gax
.
CallOption
)
(
*
documentaipb
.
BatchProcessResponse
,
error
)
Poll fetches the latest state of the long-running operation.
Poll also fetches the latest metadata, which can be retrieved by Metadata.
If Poll fails, the error is returned and op is unmodified. If Poll succeeds and the operation has completed with failure, the error is returned and op.Done will return true. If Poll succeeds and the operation has completed successfully, op.Done will return true, and the response of the operation is returned. If Poll succeeds and the operation has not completed, the returned response and error are both nil.
func (*BatchProcessDocumentsOperation) Wait
func
(
op
*
BatchProcessDocumentsOperation
)
Wait
(
ctx
context
.
Context
,
opts
...
gax
.
CallOption
)
(
*
documentaipb
.
BatchProcessResponse
,
error
)
Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
See documentation of Poll for error-handling information.
DocumentProcessorCallOptions
type
DocumentProcessorCallOptions
struct
{
ProcessDocument
[]
gax
.
CallOption
BatchProcessDocuments
[]
gax
.
CallOption
ReviewDocument
[]
gax
.
CallOption
}
DocumentProcessorCallOptions contains the retry settings for each method of DocumentProcessorClient.
DocumentProcessorClient
type
DocumentProcessorClient
struct
{
// The call options for this service.
CallOptions
*
DocumentProcessorCallOptions
// LROClient is used internally to handle long-running operations.
// It is exposed so that its CallOptions can be modified if required.
// Users should not Close this client.
LROClient
*
lroauto
.
OperationsClient
// contains filtered or unexported fields
}
DocumentProcessorClient is a client for interacting with Cloud Document AI API. Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
Service to call Cloud DocumentAI to process documents according to the processor’s definition. Processors are built using state-of-the-art Google AI such as natural language, computer vision, and translation to extract structured information from unstructured or semi-structured documents.
func NewDocumentProcessorClient
func
NewDocumentProcessorClient
(
ctx
context
.
Context
,
opts
...
option
.
ClientOption
)
(
*
DocumentProcessorClient
,
error
)
NewDocumentProcessorClient creates a new document processor service client based on gRPC. The returned client must be Closed when it is done being used to clean up its underlying connections.
Service to call Cloud DocumentAI to process documents according to the processor’s definition. Processors are built using state-of-the-art Google AI such as natural language, computer vision, and translation to extract structured information from unstructured or semi-structured documents.
Example
package
main
import
(
"context"
documentai
"cloud.google.com/go/documentai/apiv1"
)
func
main
()
{
ctx
:=
context
.
Background
()
c
,
err
:=
documentai
.
NewDocumentProcessorClient
(
ctx
)
if
err
!=
nil
{
// TODO: Handle error.
}
defer
c
.
Close
()
// TODO: Use client.
_
=
c
}
func (*DocumentProcessorClient) BatchProcessDocuments
func
(
c
*
DocumentProcessorClient
)
BatchProcessDocuments
(
ctx
context
.
Context
,
req
*
documentaipb
.
BatchProcessRequest
,
opts
...
gax
.
CallOption
)
(
*
BatchProcessDocumentsOperation
,
error
)
BatchProcessDocuments lRO endpoint to batch process many documents. The output is written to Cloud Storage as JSON in the [Document] format.
Example
package
main
import
(
"context"
documentai
"cloud.google.com/go/documentai/apiv1"
documentaipb
"google.golang.org/genproto/googleapis/cloud/documentai/v1"
)
func
main
()
{
ctx
:=
context
.
Background
()
c
,
err
:=
documentai
.
NewDocumentProcessorClient
(
ctx
)
if
err
!=
nil
{
// TODO: Handle error.
}
defer
c
.
Close
()
req
:=
& documentaipb
.
BatchProcessRequest
{
// TODO: Fill request struct fields.
// See https://pkg.go.dev/google.golang.org/genproto/googleapis/cloud/documentai/v1#BatchProcessRequest.
}
op
,
err
:=
c
.
BatchProcessDocuments
(
ctx
,
req
)
if
err
!=
nil
{
// TODO: Handle error.
}
resp
,
err
:=
op
.
Wait
(
ctx
)
if
err
!=
nil
{
// TODO: Handle error.
}
// TODO: Use resp.
_
=
resp
}
func (*DocumentProcessorClient) BatchProcessDocumentsOperation
func
(
c
*
DocumentProcessorClient
)
BatchProcessDocumentsOperation
(
name
string
)
*
BatchProcessDocumentsOperation
BatchProcessDocumentsOperation returns a new BatchProcessDocumentsOperation from a given name. The name must be that of a previously created BatchProcessDocumentsOperation, possibly from a different process.
func (*DocumentProcessorClient) Close
func
(
c
*
DocumentProcessorClient
)
Close
()
error
Close closes the connection to the API service. The user should invoke this when the client is no longer required.
func (*DocumentProcessorClient) Connection
func
(
c
*
DocumentProcessorClient
)
Connection
()
*
grpc
.
ClientConn
Connection returns a connection to the API service.
Deprecated.
func (*DocumentProcessorClient) ProcessDocument
func
(
c
*
DocumentProcessorClient
)
ProcessDocument
(
ctx
context
.
Context
,
req
*
documentaipb
.
ProcessRequest
,
opts
...
gax
.
CallOption
)
(
*
documentaipb
.
ProcessResponse
,
error
)
ProcessDocument processes a single document.
Example
package
main
import
(
"context"
documentai
"cloud.google.com/go/documentai/apiv1"
documentaipb
"google.golang.org/genproto/googleapis/cloud/documentai/v1"
)
func
main
()
{
ctx
:=
context
.
Background
()
c
,
err
:=
documentai
.
NewDocumentProcessorClient
(
ctx
)
if
err
!=
nil
{
// TODO: Handle error.
}
defer
c
.
Close
()
req
:=
& documentaipb
.
ProcessRequest
{
// TODO: Fill request struct fields.
// See https://pkg.go.dev/google.golang.org/genproto/googleapis/cloud/documentai/v1#ProcessRequest.
}
resp
,
err
:=
c
.
ProcessDocument
(
ctx
,
req
)
if
err
!=
nil
{
// TODO: Handle error.
}
// TODO: Use resp.
_
=
resp
}
func (*DocumentProcessorClient) ReviewDocument
func
(
c
*
DocumentProcessorClient
)
ReviewDocument
(
ctx
context
.
Context
,
req
*
documentaipb
.
ReviewDocumentRequest
,
opts
...
gax
.
CallOption
)
(
*
ReviewDocumentOperation
,
error
)
ReviewDocument send a document for Human Review. The input document should be processed by the specified processor.
Example
package
main
import
(
"context"
documentai
"cloud.google.com/go/documentai/apiv1"
documentaipb
"google.golang.org/genproto/googleapis/cloud/documentai/v1"
)
func
main
()
{
ctx
:=
context
.
Background
()
c
,
err
:=
documentai
.
NewDocumentProcessorClient
(
ctx
)
if
err
!=
nil
{
// TODO: Handle error.
}
defer
c
.
Close
()
req
:=
& documentaipb
.
ReviewDocumentRequest
{
// TODO: Fill request struct fields.
// See https://pkg.go.dev/google.golang.org/genproto/googleapis/cloud/documentai/v1#ReviewDocumentRequest.
}
op
,
err
:=
c
.
ReviewDocument
(
ctx
,
req
)
if
err
!=
nil
{
// TODO: Handle error.
}
resp
,
err
:=
op
.
Wait
(
ctx
)
if
err
!=
nil
{
// TODO: Handle error.
}
// TODO: Use resp.
_
=
resp
}
func (*DocumentProcessorClient) ReviewDocumentOperation
func
(
c
*
DocumentProcessorClient
)
ReviewDocumentOperation
(
name
string
)
*
ReviewDocumentOperation
ReviewDocumentOperation returns a new ReviewDocumentOperation from a given name. The name must be that of a previously created ReviewDocumentOperation, possibly from a different process.
ReviewDocumentOperation
type
ReviewDocumentOperation
struct
{
// contains filtered or unexported fields
}
ReviewDocumentOperation manages a long-running operation from ReviewDocument.
func (*ReviewDocumentOperation) Done
func
(
op
*
ReviewDocumentOperation
)
Done
()
bool
Done reports whether the long-running operation has completed.
func (*ReviewDocumentOperation) Metadata
func
(
op
*
ReviewDocumentOperation
)
Metadata
()
(
*
documentaipb
.
ReviewDocumentOperationMetadata
,
error
)
Metadata returns metadata associated with the long-running operation. Metadata itself does not contact the server, but Poll does. To get the latest metadata, call this method after a successful call to Poll. If the metadata is not available, the returned metadata and error are both nil.
func (*ReviewDocumentOperation) Name
func
(
op
*
ReviewDocumentOperation
)
Name
()
string
Name returns the name of the long-running operation. The name is assigned by the server and is unique within the service from which the operation is created.
func (*ReviewDocumentOperation) Poll
func
(
op
*
ReviewDocumentOperation
)
Poll
(
ctx
context
.
Context
,
opts
...
gax
.
CallOption
)
(
*
documentaipb
.
ReviewDocumentResponse
,
error
)
Poll fetches the latest state of the long-running operation.
Poll also fetches the latest metadata, which can be retrieved by Metadata.
If Poll fails, the error is returned and op is unmodified. If Poll succeeds and the operation has completed with failure, the error is returned and op.Done will return true. If Poll succeeds and the operation has completed successfully, op.Done will return true, and the response of the operation is returned. If Poll succeeds and the operation has not completed, the returned response and error are both nil.
func (*ReviewDocumentOperation) Wait
func
(
op
*
ReviewDocumentOperation
)
Wait
(
ctx
context
.
Context
,
opts
...
gax
.
CallOption
)
(
*
documentaipb
.
ReviewDocumentResponse
,
error
)
Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
See documentation of Poll for error-handling information.
