/
adabas.go
1223 lines (1116 loc) · 39 KB
/
adabas.go
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/*
* Copyright © 2018-2020 Software AG, Darmstadt, Germany and/or its licensors
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package adabas
import (
"bytes"
"encoding/binary"
"fmt"
"os"
"strconv"
"time"
"github.com/SoftwareAG/adabas-go-api/adatypes"
)
// BuildDate build date
var BuildDate string
// BuildVersion build version
var BuildVersion string
// MaxDatabasesID maximum valid database id
const MaxDatabasesID = 65536
const adaEmptOpt = ' '
const adaFdtXOpt = 'X'
type adabasOption uint32
// Transaction flags to synchronize and manage different requests
type transactions struct {
connection interface{}
}
// Adabas is an main Adabas structure containing all call specific parameters
type Adabas struct {
URL *URL
ID *ID
status *Status
Acbx *Acbx
AdabasBuffers []*Buffer
transactions *transactions
}
func (option adabasOption) Bit() uint32 {
return (1 << option)
}
// NewClonedAdabas create a cloned Adabas struct instance
func NewClonedAdabas(clone *Adabas) *Adabas {
acbx := newAcbx(clone.Acbx.Acbxdbid)
return &Adabas{
ID: clone.ID,
status: clone.ID.status(clone.URL.String()),
Acbx: acbx,
URL: clone.URL,
transactions: clone.transactions,
}
}
// NewAdabas create a new Adabas struct instance
func NewAdabas(p ...interface{}) (ada *Adabas, err error) {
if len(p) == 0 {
return nil, adatypes.NewGenericError(86)
}
var url *URL
switch u := p[0].(type) {
case int:
url = NewURLWithDbid(Dbid(u))
case Dbid:
url = NewURLWithDbid(u)
case string:
url, err = NewURL(u)
if err != nil {
return
}
case *URL:
url = u
default:
return nil, adatypes.NewGenericError(87)
}
var adaID *ID
if len(p) > 1 {
adaID = p[1].(*ID)
} else {
adaID = NewAdabasID()
}
adatypes.Central.Log.Debugf("Implicit created Adabas instance dbid with ID: %s", adaID.String())
if (url.Dbid < 1) || (url.Dbid > MaxDatabasesID) {
err = adatypes.NewGenericError(67, url.Dbid, 1, MaxDatabasesID)
return nil, err
}
acbx := newAcbx(url.Dbid)
ada = &Adabas{
ID: adaID,
status: adaID.status(url.String()),
URL: url,
Acbx: acbx,
transactions: &transactions{},
}
return ada, nil
}
// Open opens a session to the database
func (adabas *Adabas) Open() (err error) {
return adabas.OpenUser("")
}
// OpenUser opens a session to the database using a user session.
// A USERID must be provided if the user intends to store and/or read user data, and the user wants this data to be available during a subsequent user– or Adabas session.
// The user intends to store and/or read user data, and the user wants this data to be available during a subsequent user- or Adabas session;
// The user is to be assigned a special processing priority;
//
// The value provided for the USERID must be unique for this user (not used by any other user), and must begin with a digit or an uppercase letter.
//
// Users for whom none of the above conditions are true should set this field to blanks.
func (adabas *Adabas) OpenUser(user string) (err error) {
url := adabas.URL.String()
if adabas.ID.isOpen(url) {
adatypes.Central.Log.Debugf("Database %s already opened by ID %#v", url, adabas.ID)
return
}
adatypes.Central.Log.Debugf("Open database %d %s", adabas.Acbx.Acbxdbid, adabas.ID.String())
adabas.AdabasBuffers = append(adabas.AdabasBuffers, NewBuffer(AbdAQFb))
adabas.AdabasBuffers = append(adabas.AdabasBuffers, NewBuffer(AbdAQRb))
adabas.Acbx.Acbxcmd = op.code()
copy(adabas.Acbx.Acbxcop[:], []byte{0, 0, 0, 0, 0, 0, 0, 0})
copy(adabas.Acbx.Acbxcid[0:4], []byte{0, 0, 0, 0})
if user != "" {
l := len(user)
if l > 8 {
l = 8
}
copy(adabas.Acbx.Acbxadd1[:l], user[:l])
}
adabas.AdabasBuffers[0].WriteString(" ")
adabas.AdabasBuffers[1].WriteString("UPD.")
adabas.AdabasBuffers[1].abd.Abdsend = adabas.AdabasBuffers[1].abd.Abdsize
err = adabas.CallAdabas()
if err != nil {
adatypes.Central.Log.Debugf("Open call response ret=%v", err)
return
}
if adabas.Acbx.Acbxrsp == AdaNormal {
adatypes.Central.Log.Debugf("Open call response success")
adabas.ID.changeOpenState(adabas.URL.String(), true)
adabas.status.open = true
adabas.status.platform = adatypes.NewPlatformIsl(adabas.Acbx.Acbxisl)
} else {
err = NewError(adabas)
adatypes.Central.Log.Debugf("Error calling open", err)
adabas.status.open = false
adabas.ID.changeOpenState(adabas.URL.String(), false)
}
return err
}
// Close A session to the database will be closed
func (adabas *Adabas) Close() {
url := adabas.URL.String()
adatypes.Central.Log.Debugf("Close Adabas call %s", url)
if !adabas.ID.isOpen(url) {
adatypes.Central.Log.Debugf("Database %s already closed by ID %#v", url, adabas.ID)
return
}
if adabas.ID.transactions(adabas.URL.String()) > 0 {
adabas.BackoutTransaction()
}
adabas.AdabasBuffers = nil
adabas.Acbx.Acbxcmd = cl.code()
ret := adabas.CallAdabas()
adatypes.Central.Log.Debugf("Close call response ret=%v %s", ret, adabas.ID.String())
adabas.ID.changeOpenState(adabas.URL.String(), false)
}
// ReleaseCmdID Release any command id resource in the database of the session are released
func (adabas *Adabas) ReleaseCmdID() (err error) {
adabas.AdabasBuffers = nil
adabas.Acbx.Acbxcmd = rc.code()
adabas.Acbx.resetCop()
err = adabas.CallAdabas()
return
}
// ReleaseHold Any hold record resource in the database of the session are released
func (adabas *Adabas) ReleaseHold(fileNr Fnr) (err error) {
adabas.AdabasBuffers = nil
adabas.Acbx.Acbxcmd = ri.code()
adabas.Acbx.Acbxfnr = fileNr
adabas.Acbx.resetCop()
err = adabas.CallAdabas()
return
}
func (adabas *Adabas) String() string {
if adabas == nil {
return "Adabas <nil>"
}
return fmt.Sprintf("Adabas url=%s fnr=%d", adabas.URL.String(), adabas.Acbx.Acbxfnr)
}
// ACBX Current used ACBX
func (adabas *Adabas) ACBX() *Acbx {
return adabas.Acbx
}
// SetAbd Set ABD to adabas structure
func (adabas *Adabas) SetAbd(abd []*Buffer) {
adabas.AdabasBuffers = abd
}
// IsRemote Indicate if the call uses WCL remote calls
func (adabas *Adabas) IsRemote() bool {
adatypes.Central.Log.Debugf("Remote usage check of %s", adabas.URL)
return adabas.URL != nil && adabas.URL.Port > 0
}
func (adabas *Adabas) callRemoteAdabas() (err error) {
// Call remote database URL
adatypes.Central.Log.Debugf("Call remote via driver url: %s", adabas.URL)
switch adabas.URL.Driver {
case "tcpip":
return adatypes.NewGenericError(68)
case "adatcp", "adatcps":
return adabas.sendTCP()
case "":
return adatypes.NewGenericError(49)
}
return adatypes.NewGenericError(1, adabas.URL.Driver)
}
// sendTCP Send the TCP/IP request to remote Adabas database
func (adabas *Adabas) sendTCP() (err error) {
var tcpConn *AdaTCP
// Check if connection is already available
if adabas.transactions.connection == nil {
adatypes.Central.Log.Debugf("Establish new context for %p", adabas)
tcpConn = NewAdaTCP(adabas.URL, Endian(), adabas.ID.AdaID.User,
adabas.ID.AdaID.Node, adabas.ID.AdaID.Pid, adabas.ID.AdaID.Timestamp)
err = tcpConn.Connect()
if err != nil {
adabas.Acbx.Acbxrsp = AdaSysCe
adatypes.Central.Log.Infof("Establish TCP context error %v", err)
err = NewError(adabas)
return
}
adabas.transactions.connection = tcpConn
} else {
adatypes.Central.Log.Debugf("Use context for %p %p ", adabas, adabas.transactions.connection)
tcpConn = adabas.transactions.connection.(*AdaTCP)
}
var buffer bytes.Buffer
err = adabas.WriteBuffer(&buffer, Endian(), false)
if err != nil {
adatypes.Central.Log.Infof("Buffer transmit preparation error ", err)
return
}
adatypes.Central.Log.Debugf("Send buffer of length=%d lenBuffer=%d", buffer.Len(), len(adabas.AdabasBuffers))
err = tcpConn.SendData(buffer, uint32(len(adabas.AdabasBuffers)))
if err != nil {
adatypes.Central.Log.Infof("Transmit Adabas call error: %v", err)
tcpConn.Disconnect()
adabas.transactions.connection = nil
return
}
buffer.Reset()
var nrAbdBuffers uint32
nrAbdBuffers, err = tcpConn.ReceiveData(&buffer)
if err != nil {
adatypes.Central.Log.Infof("Receive Adabas call error: %v", err)
return
}
err = adabas.ReadBuffer(&buffer, Endian(), nrAbdBuffers, false)
if err != nil {
adatypes.Central.Log.Infof("Read buffer error, destroy context ... %v", err)
tcpConn.Disconnect()
return
}
adatypes.Central.Log.Debugf("Remote Adabas call returns successfully")
if adabas.Acbx.Acbxcmd == cl.code() {
adatypes.Central.Log.Debugf("Close called, destroy context ...")
if tcpConn != nil {
tcpConn.Disconnect()
adabas.transactions.connection = nil
}
}
adatypes.Central.Log.Debugf("Got context for %s %p ", adabas.String(),
adabas.transactions.connection)
return
}
// ReadFileDefinition Read file definition out of Adabas file
func (adabas *Adabas) ReadFileDefinition(fileNr Fnr) (definition *adatypes.Definition, err error) {
cacheName := adabas.URL.String() + "_" + strconv.Itoa(int(fileNr))
definition = adatypes.CreateDefinitionByCache(cacheName)
if definition != nil {
return
}
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Read file definition with %v", lf.code())
adabas.Acbx.Acbxcmd = lf.code()
adabas.Acbx.resetCop()
adabas.Acbx.Acbxcop[0] = adaEmptOpt
adabas.Acbx.Acbxcop[1] = adaFdtXOpt
adabas.Acbx.Acbxisn = 1
adabas.Acbx.Acbxisq = 0
adabas.AdabasBuffers = make([]*Buffer, 2)
adabas.AdabasBuffers[0] = NewBuffer(AbdAQFb)
adabas.AdabasBuffers[1] = NewBufferWithSize(AbdAQRb, 4096*2)
adabas.AdabasBuffers[0].WriteString(".")
adabas.Acbx.Acbxfnr = fileNr
err = adabas.CallAdabas()
adatypes.Central.Log.Debugf("Read file definition %v rsp=%d", err, adabas.Acbx.Acbxrsp)
if err == nil {
/* Create new helper to parse returned buffer */
helper := adatypes.NewHelper(adabas.AdabasBuffers[1].buffer, int(adabas.AdabasBuffers[1].abd.Abdrecv), Endian())
fdtDefinition := createFdtDefintion()
fdtDefinition.Values = nil
_, err = fdtDefinition.ParseBuffer(helper, adatypes.NewBufferOption(false, 0), "")
if err != nil {
adatypes.Central.Log.Debugf("ERROR parse FDT: %v", err)
return
}
adatypes.Central.Log.Debugf("Format read field definition")
definition, err = createFieldDefinitionTable(fdtDefinition)
if err != nil {
adatypes.Central.Log.Debugf("ERROR create FDT: %v", err)
return
}
definition.PutCache(cacheName)
if adatypes.Central.IsDebugLevel() {
definition.DumpTypes(true, true, "FDT read")
}
adatypes.Central.Log.Debugf("Ready parse Format read field definition")
}
// Check response to indicate error reading field definition
if adabas.Acbx.Acbxrsp != 0 {
adatypes.Central.Log.Infof("Error reading definition: %s", adabas.getAdabasMessage())
adatypes.LogMultiLineString(adabas.Acbx.String())
err = NewError(adabas)
}
return
}
// Prepare Adabas buffer ABD and buffer content for the Adabas request
func (adabas *Adabas) prepareBuffers(adabasRequest *adatypes.Request) {
bufferCount := 2
if adabasRequest.SearchTree != nil {
bufferCount = 4
}
multifetch := adabasRequest.Multifetch
if multifetch > 1 {
bufferCount++
} else {
multifetch = 1
}
adabas.AdabasBuffers = make([]*Buffer, bufferCount)
// Create format buffer for the call
adabas.AdabasBuffers[0] = NewBuffer(AbdAQFb)
adabas.AdabasBuffers[0].buffer = adabasRequest.FormatBuffer.Bytes()
adabas.AdabasBuffers[0].abd.Abdsize = uint64(adabasRequest.FormatBuffer.Len())
adabas.AdabasBuffers[0].abd.Abdsend = adabas.AdabasBuffers[0].abd.Abdsize
adabas.AdabasBuffers[0].abd.Abdrecv = 0
adatypes.Central.Log.Debugf("ABD init F send %d\n", adabas.AdabasBuffers[0].abd.Abdsend)
// Create record buffer for the call
adabas.AdabasBuffers[1] = NewBufferWithSize(AbdAQRb,
multifetch*(adabasRequest.RecordBufferLength+adabasRequest.RecordBufferShift))
adabas.AdabasBuffers[1].abd.Abdsend = 0
adabas.AdabasBuffers[1].abd.Abdrecv = adabas.AdabasBuffers[0].abd.Abdsize
adatypes.Central.Log.Debugf("ABD init R send %d buffer length %d\n", adabas.AdabasBuffers[1].abd.Abdsend, adabas.AdabasBuffers[1].abd.Abdsize)
// Define search and value buffer to search
if adabasRequest.SearchTree != nil {
adatypes.Central.Log.Debugf("Search logical added")
adabas.AdabasBuffers[2] = SearchAdabasBuffer(adabasRequest.SearchTree)
adatypes.Central.Log.Debugf("ABD init S send %d\n", adabas.AdabasBuffers[2].abd.Abdsend)
adabas.AdabasBuffers[3] = ValueAdabasBuffer(adabasRequest.SearchTree)
adatypes.Central.Log.Debugf("ABD init V send %d\n", adabas.AdabasBuffers[3].abd.Abdsend)
}
if adabasRequest.Multifetch > 1 {
adatypes.Central.Log.Debugf("Create multifetch buffer for %d multifetch entries", adabasRequest.Multifetch)
index := len(adabas.AdabasBuffers) - 1
adabas.AdabasBuffers[index] = NewBufferWithSize(AbdAQMb, 4+(adabasRequest.Multifetch*16))
}
}
// ReadPhysical read data in physical order
func (adabas *Adabas) ReadPhysical(fileNr Fnr, adabasRequest *adatypes.Request, x interface{}) (err error) {
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Physical read file ... %s", l2.command())
if adabasRequest.HoldRecords.IsHold() {
adabas.Acbx.Acbxcmd = l5.code()
} else {
adabas.Acbx.Acbxcmd = l2.code()
}
nrMultifetch := 2
adabas.Acbx.resetCop()
if adabasRequest.Multifetch > 1 {
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'O'
} else {
adabas.Acbx.Acbxcop[0] = 'M'
}
nrMultifetch = 3
} else {
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'R'
}
}
adabas.Acbx.Acbxcop[2] = adabasRequest.HoldRecords.HoldOption()
adabas.Acbx.Acbxisn = 0
adabas.Acbx.Acbxisq = 0
adabas.Acbx.Acbxcid = [4]uint8{0xff, 0xff, 0xff, 0xff}
multifetch := adabasRequest.Multifetch
if multifetch < 1 {
multifetch = 1
}
adabas.AdabasBuffers = make([]*Buffer, nrMultifetch)
adabas.AdabasBuffers[0] = NewBuffer(AbdAQFb)
adabas.AdabasBuffers[0].buffer = adabasRequest.FormatBuffer.Bytes()
adabas.AdabasBuffers[0].abd.Abdsize = uint64(adabasRequest.FormatBuffer.Len())
adabas.AdabasBuffers[0].abd.Abdsend = adabas.AdabasBuffers[0].abd.Abdsize
adabas.AdabasBuffers[1] = NewBuffer(AbdAQRb)
adabas.AdabasBuffers[1].Allocate(multifetch * adabasRequest.RecordBufferLength)
if multifetch > 1 {
adabas.AdabasBuffers[2] = NewBuffer(AbdAQMb)
adabas.AdabasBuffers[2].Allocate(multifetch * 32)
adabas.Acbx.Acbxisl = uint64(multifetch)
}
adabas.Acbx.Acbxfnr = fileNr
err = adabas.loopCall(adabasRequest, x)
return
}
// read a specific ISN out of Adabas file
func (adabas *Adabas) readISN(fileNr Fnr, adabasRequest *adatypes.Request, x interface{}) (err error) {
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Read ISN %d ... %s dbid=%d fnr=%d", adabasRequest.Isn, l1.command(), adabas.Acbx.Acbxdbid, fileNr)
if adabasRequest.HoldRecords.IsHold() {
adabas.Acbx.Acbxcmd = l4.code()
} else {
adabas.Acbx.Acbxcmd = l1.code()
}
adabas.Acbx.resetCop()
adabas.Acbx.Acbxisn = adabasRequest.Isn
adabas.Acbx.Acbxisq = 0
adabas.Acbx.Acbxcid = [4]uint8{0xff, 0xff, 0xff, 0xff}
adabas.Acbx.Acbxfnr = fileNr
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'R'
}
// adabas.Acbx.Acbxcop[2] = adabasRequest.HoldRecords.HoldOption()
switch adabasRequest.HoldRecords {
case adatypes.HoldResponse, adatypes.HoldNone, adatypes.HoldWait:
default:
return adatypes.NewGenericError(95)
}
adabas.prepareBuffers(adabasRequest)
err = adabas.loopCall(adabasRequest, x)
return
}
// ReadISNOrder Read logical using a descriptor
func (adabas *Adabas) ReadISNOrder(fileNr Fnr, adabasRequest *adatypes.Request, x interface{}) (err error) {
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Read ISN order ... %s dbid=%d multifetch=%d", l3.command(), adabas.Acbx.Acbxdbid, adabasRequest.Multifetch)
if adabasRequest.HoldRecords.IsHold() {
adabas.Acbx.Acbxcmd = l4.code()
} else {
adabas.Acbx.Acbxcmd = l1.code()
}
adabas.Acbx.resetCop()
adabas.Acbx.Acbxcop[1] = 'I'
if adabasRequest.Multifetch > 1 {
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'O'
} else {
adabas.Acbx.Acbxcop[0] = 'M'
}
adabas.Acbx.Acbxisl = uint64(adabasRequest.Multifetch)
} else {
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'R'
}
}
adabas.Acbx.Acbxcop[2] = adabasRequest.HoldRecords.HoldOption()
adabas.Acbx.Acbxisn = adabasRequest.Isn
adabas.Acbx.Acbxisq = 0
adabas.Acbx.Acbxcid = [4]uint8{0xff, 0xff, 0xff, 0xff}
adabas.prepareBuffers(adabasRequest)
adabas.Acbx.Acbxfnr = fileNr
err = adabas.loopCall(adabasRequest, x)
return
}
// ReadLogicalWith Read logical using a descriptor
func (adabas *Adabas) ReadLogicalWith(fileNr Fnr, adabasRequest *adatypes.Request, x interface{}) (err error) {
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Read logical ... %s dbid=%d multifetch=%d", l3.command(), adabas.Acbx.Acbxdbid, adabasRequest.Multifetch)
if adabasRequest.HoldRecords.IsHold() {
adabas.Acbx.Acbxcmd = l6.code()
} else {
adabas.Acbx.Acbxcmd = l3.code()
}
adabas.Acbx.resetCop()
adabas.Acbx.Acbxisn = adabasRequest.Isn
adabas.Acbx.Acbxisl = 0
adabas.Acbx.Acbxcop[1] = 'A'
if adabasRequest.Multifetch > 1 {
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'O'
} else {
adabas.Acbx.Acbxcop[0] = 'M'
}
adabas.Acbx.Acbxisl = uint64(adabasRequest.Multifetch)
} else {
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'R'
}
}
adabas.Acbx.Acbxcop[2] = adabasRequest.HoldRecords.HoldOption()
adabas.Acbx.Acbxisn = 0
adabas.Acbx.Acbxisq = 0
adabas.Acbx.Acbxcid = [4]uint8{0xff, 0xff, 0xff, 0xff}
adabas.prepareBuffers(adabasRequest)
var add1 bytes.Buffer
if len(adabasRequest.Descriptors) == 1 {
for _, d := range adabasRequest.Descriptors {
add1.WriteString(d)
}
} else {
err = adatypes.NewGenericError(58)
return
}
add1.WriteString(" ")
copy(adabas.Acbx.Acbxadd1[:], add1.Bytes()[0:7])
adabas.Acbx.Acbxfnr = fileNr
err = adabas.loopCall(adabasRequest, x)
return
}
// ReadStream Read partial lob stream
func (adabas *Adabas) ReadStream(adabasRequest *adatypes.Request, offset uint64, x interface{}) (err error) {
adabas.Acbx.Acbxcmd = l1.code()
adabas.Acbx.resetCop()
adabas.Acbx.Acbxcop[1] = 'L'
adabas.Acbx.Acbxisl = offset
adabas.Acbx.Acbxcid = [4]uint8{0xff, 0xff, 0xff, 0xff}
adabasRequest.Multifetch = 1
adabasRequest.Limit = 1
adabas.prepareBuffers(adabasRequest)
err = adabas.loopCall(adabasRequest, x)
return
}
// SearchLogicalWith Search logical using a descriptor
func (adabas *Adabas) SearchLogicalWith(fileNr Fnr, adabasRequest *adatypes.Request, x interface{}) (err error) {
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Read logical ... %s dbid=%d", l3.command(), adabas.Acbx.Acbxdbid)
adabas.Acbx.Acbxcmd = s2.code()
adabas.Acbx.resetCop()
adabas.Acbx.Acbxcop[0] = 'H'
if adabasRequest.Option.Ascending {
adabas.Acbx.Acbxcop[1] = ' '
} else {
adabas.Acbx.Acbxcop[1] = 'D'
}
adabas.Acbx.Acbxisn = 0
adabas.Acbx.Acbxisl = 0
adabas.Acbx.Acbxisq = 0
adabas.Acbx.Acbxcid = [4]uint8{0xff, 0xff, 0xff, 0xff}
adabas.prepareBuffers(adabasRequest)
var add1 bytes.Buffer
if len(adabasRequest.Descriptors) > 0 {
for _, d := range adabasRequest.Descriptors {
add1.WriteString(d)
}
} else {
add1.WriteString("ISN")
}
add1.WriteString(" ")
copy(adabas.Acbx.Acbxadd1[:], add1.Bytes()[0:7])
adabas.Acbx.Acbxfnr = fileNr
// Call Adabas
err = adabas.CallAdabas()
adatypes.Central.Log.Debugf("Received search response ret=%v", err)
if err != nil {
return
}
// End of file reached
if adabas.Acbx.Acbxrsp == AdaEOF || adabas.Acbx.Acbxisq == 0 {
return
}
if adabasRequest.HoldRecords.IsHold() {
adabas.Acbx.Acbxcmd = l1.code()
} else {
adabas.Acbx.Acbxcmd = l4.code()
}
adabas.Acbx.resetCop()
if adabasRequest.Multifetch > 1 {
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'O'
} else {
adabas.Acbx.Acbxcop[0] = 'M'
}
adabas.Acbx.Acbxisl = uint64(adabasRequest.Multifetch)
} else {
if adabasRequest.HoldRecords == adatypes.HoldResponse {
adabas.Acbx.Acbxcop[0] = 'R'
}
}
adabas.Acbx.Acbxcop[1] = 'N'
adabas.Acbx.Acbxcop[2] = adabasRequest.HoldRecords.HoldOption()
err = adabas.loopCall(adabasRequest, x)
return
}
// Loop call used to read a sequence of records
func (adabas *Adabas) loopCall(adabasRequest *adatypes.Request, x interface{}) (err error) {
adatypes.Central.Log.Debugf("Loop call records avail.=%v", (adabasRequest.Definition.Values != nil))
count := uint64(0)
adabasRequest.CmdCode = adabas.Acbx.Acbxcmd
switch adabas.Acbx.Acbxcmd {
case l1.code(), l4.code():
adabasRequest.IsnIncrease = true
adabasRequest.StoreIsn = true
case l2.code(), l5.code():
adabasRequest.IsnIncrease = false
adabasRequest.StoreIsn = false
default:
adabasRequest.IsnIncrease = false
adabasRequest.StoreIsn = true
}
if adabasRequest.Parameter == nil {
adabasRequest.Reference = fmt.Sprintf("db/%d/%d", adabas.Acbx.Acbxdbid, adabas.Acbx.Acbxfnr)
} else {
adabasMap := adabasRequest.Parameter.(*Map)
adatypes.Central.Log.Debugf("%v -> %#v\n", adabasRequest.Parameter, adabasMap)
if adabasMap != nil {
adabasRequest.Reference = fmt.Sprintf("map/%s", adabasMap.Name)
}
}
var responseCode uint32
for responseCode == 0 {
if !(adabasRequest.Option.SecondCall > 0 || adabasRequest.Option.StreamCursor > 0) {
err = adabasRequest.Definition.CreateValues(false)
if err != nil {
return
}
}
adabas.resetSendSize()
adatypes.Central.Log.Debugf("Send call avail.=%v", (adabasRequest.Definition.Values != nil))
// Call Adabas
err = adabas.CallAdabas()
adatypes.Central.Log.Debugf("Received call response ret=%v", err)
if err != nil {
return
}
adabasRequest.Caller = adabas
adabasRequest.Response = adabas.Acbx.Acbxrsp
// End of file reached
if adabas.Acbx.Acbxrsp == AdaEOF {
return
}
// Error received from Adabas
if adabas.Acbx.Acbxrsp != AdaNormal {
adatypes.Central.Log.Errorf("Error reading data: %s", adabas.getAdabasMessage())
err = NewError(adabas)
return
}
adabasRequest.Isn = adatypes.Isn(adabas.Acbx.Acbxisn)
adabasRequest.IsnQuantity = adabas.Acbx.Acbxisq
adatypes.Central.Log.Debugf("ISN= %d ISN quantity=%d multifetch=%d", adabasRequest.Isn, adabasRequest.IsnQuantity,
adabasRequest.Multifetch)
adabasRequest.RecordBuffer = adatypes.NewHelper(adabas.AdabasBuffers[1].buffer,
int(adabas.AdabasBuffers[1].abd.Abdrecv), Endian())
adabasRequest.MultifetchBuffer, err = adabas.multifetchBuffer()
if err != nil {
return
}
if adabasRequest.Parser == nil {
break
}
adabasRequest.CbIsn = adabas.Acbx.Acbxisn
if adabasRequest.IsnIncrease {
adabas.Acbx.Acbxisn++
}
responseCode, err = adabasRequest.ParseBuffer(&count, x)
if err != nil {
return
}
adabas.Acbx.Acbxisn = adabasRequest.CbIsn
adatypes.Central.Log.Debugf("Loop step ended Limit=%d count=%d", adabasRequest.Limit, count)
if (adabasRequest.Limit > 0) && (count >= adabasRequest.Limit) {
adatypes.Central.Log.Debugf("Limit reached")
break
}
}
adatypes.Central.Log.Debugf("Loop call ended count=%d", count)
return
}
func (adabas *Adabas) resetSendSize() {
for _, abd := range adabas.AdabasBuffers {
abd.resetSendSize()
}
}
// SendSecondCall do second call reading lob data or multiple fields of the period group
func (adabas *Adabas) SendSecondCall(adabasRequest *adatypes.Request, x interface{}) (err error) {
adatypes.Central.Log.Debugf("Check second call .... values avail.=%v", (adabasRequest.Definition.Values == nil))
if adabasRequest.Option.NeedSecondCall != adatypes.NoneSecond {
adatypes.Central.Log.Debugf("Need second call %v", adabasRequest.Option.NeedSecondCall)
tmpAdabasRequest, err2 := adabasRequest.Definition.CreateAdabasRequest(false, 1, adabas.status.platform.IsMainframe())
if err2 != nil {
err = err2
return
}
acbx := *adabas.Acbx
abd := adabas.AdabasBuffers
tmpAdabasRequest.Isn = adabasRequest.Isn
tmpAdabasRequest.Definition = adabasRequest.Definition
tmpAdabasRequest.RecordBufferShift = adabasRequest.RecordBufferShift
tmpAdabasRequest.Multifetch = 1
tmpAdabasRequest.Option.SecondCall = 1
adatypes.Central.Log.Debugf("Call second request to ISN=%d only", tmpAdabasRequest.Isn)
err = adabas.readISN(adabas.Acbx.Acbxfnr, tmpAdabasRequest, x)
if err != nil {
return
}
adatypes.Central.Log.Debugf("Read ISN done, parse buffer of second call")
_, err = tmpAdabasRequest.Definition.ParseBuffer(tmpAdabasRequest.RecordBuffer, tmpAdabasRequest.Option, "")
if err != nil {
adatypes.Central.Log.Debugf("Parse buffer of second call with error: ", err)
return
}
adatypes.Central.Log.Debugf("Parse buffer of second callt ended, reset to old adabas request")
*adabas.Acbx = acbx
adabas.AdabasBuffers = abd
adatypes.Central.Log.Debugf("Second call done")
adabasRequest.Option.NeedSecondCall = adatypes.NoneSecond
}
return
}
// Histogram histogram of a specific descriptor
func (adabas *Adabas) Histogram(fileNr Fnr, adabasRequest *adatypes.Request, x interface{}) (err error) {
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Descriptor read file %s", l9.command())
adabas.Acbx.Acbxcmd = l9.code()
adabas.Acbx.Acbxisn = 0
adabas.Acbx.Acbxisl = 0
adabas.Acbx.Acbxisq = 0
adabas.Acbx.Acbxcid = [4]uint8{0xff, 0xff, 0xff, 0xff}
adabas.Acbx.resetCop()
adabas.Acbx.Acbxcop[1] = 'A'
if adabasRequest.Multifetch > 1 {
adabas.Acbx.Acbxcop[0] = 'M'
adabas.Acbx.Acbxisl = uint64(adabasRequest.Multifetch)
}
adabas.prepareBuffers(adabasRequest)
var add1 bytes.Buffer
for _, d := range adabasRequest.Descriptors {
add1.WriteString(d)
}
add1.WriteString(" ")
copy(adabas.Acbx.Acbxadd1[:], add1.Bytes()[0:7])
adabas.Acbx.Acbxfnr = fileNr
err = adabas.loopCall(adabasRequest, x)
return
}
// Store store a record into database
func (adabas *Adabas) Store(fileNr Fnr, adabasRequest *adatypes.Request) (err error) {
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Call store, pending transactions=%d adabas=%p",
adabas.ID.transactions(adabas.URL.String()), adabas)
if adabasRequest.Isn != 0 {
adatypes.Central.Log.Debugf("Store specific ISN ... %s", n2.command())
adabas.Acbx.Acbxcmd = n2.code()
adabas.Acbx.Acbxisn = adabasRequest.Isn
} else {
adatypes.Central.Log.Debugf("Store data ... %s", n1.command())
adabas.Acbx.Acbxcmd = n1.code()
adabas.Acbx.Acbxisn = 0
}
adabas.Acbx.resetCop()
adabas.Acbx.Acbxisl = 0
adabas.Acbx.Acbxisq = 0
adabas.Acbx.Acbxcid = [4]uint8{0, 0, 0, 0}
adabas.Acbx.Acbxfnr = fileNr
adabas.AdabasBuffers = make([]*Buffer, 2)
adabas.AdabasBuffers[0] = NewBuffer(AbdAQFb)
adabas.AdabasBuffers[0].buffer = adabasRequest.FormatBuffer.Bytes()
adabas.AdabasBuffers[0].abd.Abdsize = uint64(adabasRequest.FormatBuffer.Len())
adabas.AdabasBuffers[0].abd.Abdsend = adabas.AdabasBuffers[0].abd.Abdsize
adabas.AdabasBuffers[1] = NewBuffer(AbdAQRb)
adabas.AdabasBuffers[1].buffer = adabasRequest.RecordBuffer.Buffer()
adabas.AdabasBuffers[1].abd.Abdsize = uint64(len(adabas.AdabasBuffers[1].buffer))
adabas.AdabasBuffers[1].abd.Abdsend = adabas.AdabasBuffers[1].abd.Abdsize
err = adabas.CallAdabas()
adatypes.Central.Log.Debugf("Store call response ret=%v", err)
if err != nil {
return
}
adatypes.Central.Log.Debugf("Store ISN rsp=%d ... ISN=%d", adabas.Acbx.Acbxrsp, adabas.Acbx.Acbxisn)
// Error received from Adabas
if adabas.Acbx.Acbxrsp != AdaNormal {
adatypes.Central.Log.Errorf("Error storing data: %s", adabas.getAdabasMessage())
err = NewError(adabas)
adatypes.Central.Log.Debugf("%v", err)
return
}
adabas.ID.incTransactions(adabas.URL.String())
adabasRequest.Isn = adabas.Acbx.Acbxisn
return
}
// Update update a record in database
func (adabas *Adabas) Update(fileNr Fnr, adabasRequest *adatypes.Request) (err error) {
err = adabas.Open()
if err != nil {
return
}
adatypes.Central.Log.Debugf("Call update, pending transactions=%d adabas=%p",
adabas.ID.transactions(adabas.URL.String()), adabas)
adatypes.Central.Log.Debugf("Update data ... %s", a1.command())
adabas.Acbx.Acbxcmd = a1.code()
adabas.Acbx.Acbxisn = adabasRequest.Isn
adabas.Acbx.resetCop()
if adabasRequest.Option.ExchangeRecord {
adabas.Acbx.Acbxcop[0] = 'X'
adabas.Acbx.Acbxcop[1] = 'H'
} else {
adabas.Acbx.Acbxcop[0] = 'H'
}
adabas.Acbx.Acbxisl = 0
adabas.Acbx.Acbxisq = 0
adabas.Acbx.Acbxcid = [4]uint8{0, 0, 0, 0}
adabas.Acbx.Acbxfnr = fileNr
adabas.AdabasBuffers = make([]*Buffer, 2)
adabas.AdabasBuffers[0] = NewBuffer(AbdAQFb)
adabas.AdabasBuffers[0].buffer = adabasRequest.FormatBuffer.Bytes()
adabas.AdabasBuffers[0].abd.Abdsize = uint64(adabasRequest.FormatBuffer.Len())
adabas.AdabasBuffers[0].abd.Abdsend = adabas.AdabasBuffers[0].abd.Abdsize
adabas.AdabasBuffers[1] = NewBuffer(AbdAQRb)
adabas.AdabasBuffers[1].buffer = adabasRequest.RecordBuffer.Buffer()
adabas.AdabasBuffers[1].abd.Abdsize = uint64(len(adabas.AdabasBuffers[1].buffer))
adabas.AdabasBuffers[1].abd.Abdsend = adabas.AdabasBuffers[1].abd.Abdsize
err = adabas.CallAdabas()
adatypes.Central.Log.Debugf("Update call response ret=%v", err)
if err != nil {
return
}
adatypes.Central.Log.Debugf("Update ISN rsp=%d ... %d", adabas.Acbx.Acbxrsp, adabas.Acbx.Acbxisn)
// Error received from Adabas
if adabas.Acbx.Acbxrsp != AdaNormal {
adatypes.Central.Log.Errorf("Error updating data: %s", adabas.getAdabasMessage())
err = NewError(adabas)
adatypes.Central.Log.Debugf("%v", err)
return
}
adabas.ID.incTransactions(adabas.URL.String())
adabasRequest.Isn = adabas.Acbx.Acbxisn
return
}
// SetURL set new database URL
func (adabas *Adabas) SetURL(URL *URL) {
if adabas.URL == URL {
return
}
adabas.Close()
adabas.Acbx.Acbxdbid = URL.Dbid
adabas.URL = URL
// Different adabas instance, need to update status
adabas.status = adabas.ID.status(adabas.URL.String())
}
// SetDbid set new database id
func (adabas *Adabas) SetDbid(dbid Dbid) {
if dbid == adabas.Acbx.Acbxdbid {
return
}
adabas.Close()
adabas.Acbx.Acbxdbid = dbid
adabas.URL = NewURLWithDbid(dbid)
// Different adabas instance, need to update status
adabas.status = adabas.ID.status(adabas.URL.String())
}
// DeleteIsn delete a single isn
func (adabas *Adabas) DeleteIsn(fileNr Fnr, isn adatypes.Isn) (err error) {
adatypes.Central.Log.Debugf("Delete ISN transactions=%d adabas=%p", adabas.ID.transactions(adabas.URL.String()),
adabas)
adatypes.Central.Log.Debugf("Delete Isn ...%s on dbid %d and file %d", e1.command(), adabas.Acbx.Acbxdbid, fileNr)
adabas.Acbx.Acbxcmd = e1.code()
adabas.Acbx.Acbxisn = isn
adabas.Acbx.Acbxfnr = fileNr
err = adabas.CallAdabas()
if err != nil {
adatypes.Central.Log.Debugf("Delete isn call response error=%v", err)
return
}
adabas.ID.incTransactions(adabas.URL.String())
adatypes.Central.Log.Debugf("Delete ISN error ...%d transactions=%d adabas=%p", adabas.Acbx.Acbxrsp,
adabas.ID.transactions(adabas.URL.String()), adabas)