refs #4550 Solved bugs

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 config.local.yml
+tmp

Dockerfile

@@ -14,6 +14,16 @@ RUN curl -fsSL https://deb.nodesource.com/setup_14.x | sudo -E bash - \
     && apt install -y nodejs \
     && rm -rf /var/lib/apt/lists/*
 
+# Cups
+
+RUN useradd admin && usermod -g lpadmin admin
+
+COPY ctzcls-cups_1.1.0-0_amd64.deb /tmp/
+RUN chmod a+x /tmp/ctzcls-cups_1.1.0-0_amd64.deb \
+    && dpkg -i /tmp/ctzcls-cups_1.1.0-0_amd64.deb
+
+# Printnatura
+
 WORKDIR /printnatura
 
 COPY \
@@ -22,9 +32,6 @@ COPY \
     ./
 RUN npm install
 
-COPY cupsd.conf /etc/cups/
-RUN useradd admin && usermod -g lpadmin admin
-
 COPY \
     main.js \
     print-server.js \
@@ -33,9 +40,5 @@ COPY \
     ./
 COPY sql sql
 
-COPY ctzcls-cups_1.1.0-0_amd64.deb /tmp/
-RUN chmod a+x /tmp/ctzcls-cups_1.1.0-0_amd64.deb \
-    && dpkg -i /tmp/ctzcls-cups_1.1.0-0_amd64.deb
-
 ENTRYPOINT ["/printnatura/entrypoint.sh"]
 CMD ["node", "main.js"]

README.md

@@ -8,12 +8,13 @@ This project is used to print pdf, it acts as a print server.
 ## Installaton
 Clone the repository
 ```
-$ git clone https://gitea.verdnatura.es/verdnatura/printnatura.git
+> git clone https://gitea.verdnatura.es/verdnatura/printnatura.git
 ```
 
 Build
 ```
-$ docker build -t printnatura .
+> $CUPS_PASSWORD = 1234
+> docker build --build-arg CUPS_PASSWORD -t printnatura .
 ```
 
 Create file named "config.local.yml" and put your private configuration:
@@ -35,12 +36,13 @@ refreshRate: 1000
 
 Exec
 ```
-$ docker run --name printnatura -it --rm -v $PWD/config.local.yml:/printnatura/config.local.yml:ro -p 80:631 printnatura
+> docker run --name printnatura -it --rm -v $PWD/config.local.yml:/printnatura/config.local.yml:ro -v $PWD/cupsd.conf:/etc/cups/cupsd.conf:ro -p 80:631 printnatura
+
 ```
 
 Bash
 ```
-$ docker exec -i -t printnatura bash
+> docker exec -i -t printnatura bash
 ```
 
 Has a graphical web interface (cupsd.conf)

print-server.js

@@ -7,6 +7,7 @@ const axios = require('axios');
 const yml = require('require-yml');
 
 const selectQuery = fs.readFileSync(`sql/selectQueued.sql`).toString();
+const jobDataQuery = fs.readFileSync(`sql/jobData.sql`).toString();
 const jobArgsQuery = fs.readFileSync(`sql/jobArgs.sql`).toString();
 const updateQuery = fs.readFileSync(`sql/updateState.sql`).toString();
 const appDir = path.dirname(require.main.filename);
@@ -92,7 +93,6 @@ class PrintServer {
             }
 
             jobId = printJob.id;
-            this.method = printJob.method;
 
             await conn.query(updateQuery, ['printing', null, jobId]);
             await conn.commit();
@@ -102,22 +102,27 @@ class PrintServer {
         }
 
         try {
+            // Job data
+            const [[jobData]] = await conn.query(jobDataQuery, jobId);
             const args = {};
-            const res = await conn.query(jobArgsQuery, jobId);
+            const [res] = await conn.query(jobArgsQuery, jobId);
-            for (const row of res[0])
+            for (const row of res)
                 args[row.name] = row.value;
-            try {
-                // Path params
-                const usedParams = new Set();
-                let methodPath = this.method.replace(/{\w+}/g, function(match) {
-                    const key = match.substr(1, match.length - 2);
-                    const value = args[key];
-                    usedParams.add(key);
-                    return value !== undefined ? value : match;
-                });
             
+            // Path params
+            const usedParams = new Set();
+            const methodPath = jobData.method.replace(/{\w+}/g, function(match) {
+                const key = match.substr(1, match.length - 2);
+                const value = args[key];
+                usedParams.add(key);
+                return value !== undefined ? value : match;
+            });
+
+            let pdfData;
+
+            for (let attempts = 0; !pdfData && attempts <= 1; attempts++) {
                 // URL params
-                let params = {
+                const params = {
                     access_token: this.token,
                     userFk: printJob.userFk
                 };
@@ -128,34 +133,34 @@ class PrintServer {
                 const urlParams = new URLSearchParams(params);
 
                 // Request
-                const response = await axios({
+                try {
-                    method: 'get',
+                    const response = await axios({
-                    url: `${conf.salix.url}/api/${methodPath}?${urlParams.toString()}`,
+                        method: 'get',
-                    responseType: 'arraybuffer',
+                        url: `${conf.salix.url}/api/${methodPath}?${urlParams.toString()}`,
-                    headers: {
+                        responseType: 'arraybuffer',
-                        'Accept': 'application/pdf'
+                        headers: {
-                    }
+                            'Accept': 'application/pdf'
-                });
-                this.pdfData = response.data       
-            }
-            catch (err) {
-                switch(err.response.statusText) {
-                    case 'Unauthorized':
-                        try {
-                            await this.getToken();
-                        } catch(err) {
-                            throw new Error(`Could not get token: ${err.message}`);
                         }
-                        break;
+                    });
+                    pdfData = response.data;  
+                }
+                catch (err) {
+                    if (err.response?.statusText === 'Unauthorized') {
+                        await this.getToken();
+                    } else
+                        throw err;
                 }
             }
-            const printer = printJob.printer;
+
+            // Save PDF to disk
+            const printer = jobData.printer;
             const tmpPath = path.join(appDir, 'tmp')
             if (!fs.existsSync(tmpPath))
                 fs.mkdirSync(tmpPath)
             const tmpFilePath = path.join(tmpPath, `${Math.random().toString(36).substring(7)}.pdf`);
-            await fs.writeFile(tmpFilePath, this.pdfData, 'binary');
+            await fs.writeFile(tmpFilePath, pdfData, 'binary');
 
+            // Print PDF
             try {
                 await pExec(`lp -d "${printer}" "${tmpFilePath}"`);
             } catch(err) {
@@ -166,7 +171,7 @@ class PrintServer {
             await conn.query(updateQuery, ['printed', null, jobId]);
 
             if (conf.debug)
-                console.debug(`(${colors.yellow(jobId)}) Document has been printed`, `[${args.collectionFk}, ${printJob.report}, ${printer}]`.green);
+                console.debug(`(${colors.yellow(jobId)}) Document has been printed`, `[${args.collectionFk}, ${jobData.report}, ${printer}]`.green);
 
             await fs.unlink(tmpFilePath);
         } catch (err) {

sql/jobData.sql

@@ -0,0 +1,7 @@
+SELECT r.name report,
+		p.name printer,
+		r.method
+	FROM printQueue pq
+		JOIN report r ON r.id = pq.reportFk
+		JOIN printer p ON p.id = pq.printerFk
+	WHERE pq.id = ?

sql/selectQueued.sql

@@ -1,15 +1,9 @@
 SELECT pq.id,
-		r.name report,
-		p.name printer,
-		pqa.name arg,
-		pqa.value,
-		r.method,
 		pq.workerFk userFk
 	FROM printQueue pq
 		JOIN report r ON r.id = pq.reportFk
-		JOIN printQueueArgs pqa ON pqa.printQueueFk = pq.id
-		LEFT JOIN printer p ON p.id = pq.printerFk
 	WHERE pq.statusCode = 'queued'
-		AND NOT r.method IS NULL
+		AND r.method IS NOT NULL
 	ORDER BY pq.priorityFk ASC
 	LIMIT 1
+	FOR UPDATE