/
deece.go
291 lines (244 loc) · 6.42 KB
/
deece.go
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package Deece
import (
"encoding/csv"
"fmt"
"github.com/ethereum/go-ethereum/ethclient"
ipfsapi "github.com/ipfs/go-ipfs-api"
"io/ioutil"
"log"
"os"
"sort"
"strings"
)
//function to setup the local connections to ipfs, eth gateway etc.
//to be used at gateway server running the web interface
func ConnectServer(Infura string, tli string) (*ipfsapi.Shell, *ethclient.Client) {
err := setDirectories()
if err != nil {
log.Println(err)
}
sh := ipfsapi.NewShell("localhost:5001")
cli, err := ethclient.Dial(Infura)
if err != nil {
log.Println(err)
}
TLI = tli
return sh, cli
}
//function to setup the local connections to ipfs, eth gateway, gateway server address etc.
//to be used by clients using the CLI application
func ConnectClient(Infura string, tli string, ip string, port int, passW string) (*ipfsapi.Shell, *ethclient.Client) {
err := setDirectories()
if err != nil {
log.Println(err)
}
sh := ipfsapi.NewShell("localhost:5001")
cli, err := ethclient.Dial(Infura)
if err != nil {
log.Println(err)
}
serverPort = port
serverIP = ip
passWord = passW
TLI, err = getTLI()
if err != nil || TLI == "" {
log.Println(err)
//fallback to config file if server does not respond
TLI = tli
}
return sh, cli
}
//initiates a crawl for a name and content type t
//to be used on server (and therefore performs name publishing step locally)
//files are stored locally. Future releases will use tmpdir
func DoCrawlServer(name string, t string) error {
//start crawling process
d, id, err := crawlInput(t, name)
if err != nil {
log.Println(err)
return err
}
log.Println("Success retrieving file...")
err = ioutil.WriteFile("./retrieved_files/"+id+".pdf", d, 0644)
if err != nil {
log.Println(err)
return err
}
log.Println("Success saving file locally...")
//starts adding to the index by extracting keywords using OCR
content, err := ExtractPdfDataOCR("./retrieved_files/" + id)
if err != nil {
log.Println(&pdfreadfail{"./retrieved_files/" + id + ".pdf"})
return &pdfreadfail{"./retrieved_files/" + id + ".pdf"}
}
log.Println("Success extracting keywords...")
err = CreateIndexEntryServer1(content, id)
if err != nil {
log.Println(&noIndexAdd{})
return &noIndexAdd{}
}
log.Println("Successful indexing.")
return nil
}
//initiates a crawl for a name and content type t
//to be used at client and uses the server to update the TLI entry on IPNS
//files are stored locally. Future releases will use tmpdir
func DoCrawlClient(name string, t string) error {
//start crawling process
d, id, err := crawlInput(t, name)
if err != nil {
log.Println(err)
return err
}
log.Println("Success retrieving file...")
err = ioutil.WriteFile("./retrieved_files/"+id+".pdf", d, 0644)
if err != nil {
log.Println(err)
return err
}
log.Println("Success saving file locally...")
//starts adding to the index by extracting keywords using OCR
content, err := ExtractPdfDataOCR("./retrieved_files/" + id)
if err != nil {
log.Println(&pdfreadfail{"./retrieved_files/" + id + ".pdf"})
return &pdfreadfail{"./retrieved_files/" + id + ".pdf"}
}
log.Println("Success extracting keywords...")
err = CreateIndexEntryClient1(content, id)
if err != nil {
log.Println(&noIndexAdd{})
return &noIndexAdd{}
}
log.Println("Successful indexing.")
return nil
}
//search to be used from the gateway server
func DoSearch1(query string) ([]QueryResult, error) {
searchTerms := strings.Split(query, " ")
//get the latest TLI file
latestTLI, err := Shell.Resolve(TLI)
if err != nil {
log.Println(err)
return nil, err
}
cidTLI := strings.Split(latestTLI, "s/")[1]
//retrieve the TLI file
cat, err := Shell.Cat(cidTLI)
if err != nil {
log.Println(err)
return nil, err
}
result, err := ioutil.ReadAll(cat)
if err != nil {
log.Println(err)
return nil, err
}
err = cat.Close()
if err != nil {
log.Println(err)
return nil, err
}
err = ioutil.WriteFile("./TLI/TLI.csv", result, 0644)
if err != nil {
log.Println(err)
return nil, err
}
f, err := os.Open("./TLI/TLI.csv")
if err != nil {
log.Println(err)
return nil, err
}
csvr := csv.NewReader(f)
records, _ := csvr.ReadAll()
//retrieve the index location for each keyword
var indexLocations []string
for j := 0; j < len(searchTerms); j++ {
i := sort.Search(len(records), func(i int) bool { return searchTerms[j] <= records[i][0] })
if i < len(records) && records[i][0] == searchTerms[j] {
indexLocations = append(indexLocations, records[i][1])
} else {
indexLocations = append(indexLocations, "-")
}
}
err = f.Close()
if err != nil {
log.Println(err)
return nil, err
}
qResult, err := resultsWordServer1(searchTerms, indexLocations)
if err != nil {
log.Println(err)
return nil, err
}
return qResult, nil
}
//search to be used from the client
func DoSearchClient(searchTerms []string) error {
//get the latest TLI file
latestTLI, err := Shell.Resolve(TLI)
if err != nil {
log.Println(err)
return err
}
cidTLI := strings.Split(latestTLI, "s/")[1]
//retrieve the TLI file
cat, err := Shell.Cat(cidTLI)
if err != nil {
log.Println(err)
return err
}
go updatePin(cidTLI)
result, err := ioutil.ReadAll(cat)
if err != nil {
log.Println(err)
return err
}
err = cat.Close()
if err != nil {
log.Println(err)
return err
}
err = ioutil.WriteFile("./TLI/TLI.csv", result, 0644)
if err != nil {
log.Println(err)
return err
}
f, err := os.Open("./TLI/TLI.csv")
if err != nil {
log.Println(err)
return err
}
csvr := csv.NewReader(f)
records, _ := csvr.ReadAll()
//retrieve the index location for each keyword
var indexLocations []string
for j := 0; j < len(searchTerms); j++ {
i := sort.Search(len(records), func(i int) bool { return searchTerms[j] <= records[i][0] })
if i < len(records) && records[i][0] == searchTerms[j] {
indexLocations = append(indexLocations, records[i][1])
} else {
indexLocations = append(indexLocations, "-")
}
}
err = f.Close()
if err != nil {
log.Println(err)
return err
}
qResult, err := resultsWordServer1(searchTerms, indexLocations)
if err != nil {
log.Println(err)
return err
}
fmt.Println("Found", len(qResult), "results: ")
//print out the results of the searchterms
printKeyword := " "
for k := 0; k < len(qResult); k++ {
if printKeyword != qResult[k].SearchTerm {
fmt.Println()
fmt.Println(qResult[k].SearchTerm + " : ")
}
fmt.Println(qResult[k].CID + " (https://gateway.ipfs.io/ipfs/" + qResult[k].CID + ")")
}
return nil
}