Mercurial > gemma
view pkg/controllers/printtemplates.go @ 3302:ec6163c6687d
'Historicise' gauges on import
Gauge data sets will be updated or a new version will be inserted
depending on temporal validity and a timestamp marking the last
update in the RIS-Index of a data set. The trigger on date_info is
removed because the value is actually an attribut coming from the
RIS-Index.
Gauge measurements and predictions are associated to the version with
matching temporal validity. Bottlenecks are always associated to the
actual version of the gauge, although this might change as soon as
bottlenecks are 'historicised', too.
author | Tom Gottfried <tom@intevation.de> |
---|---|
date | Thu, 16 May 2019 18:41:43 +0200 |
parents | 607a158fe8f5 |
children | 5466562cca60 |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package controllers import ( "bytes" "database/sql" "encoding/json" "net/http" "strings" "time" "github.com/gorilla/mux" "github.com/jackc/pgx/pgtype" "gemma.intevation.de/gemma/pkg/models" ) const maxPrintTemplateSize = 5 * 1024 * 1024 const ( listPrintTemplatesSQL = ` SELECT template_name, template_type::varchar, date_info, country FROM users.templates WHERE ` hasPrintTemplateSQL = ` SELECT true FROM users.templates WHERE template_name = $1 AND template_type = $2::template_types` deletePrintTemplateSQL = ` DELETE FROM users.templates WHERE template_name = $1 AND template_type = $2::template_types` selectPrintTemplateSQL = ` SELECT template_data FROM users.templates WHERE template_name = $1 AND template_type = $2::template_types` insertPrintTemplateSQL = ` INSERT INTO users.templates (template_name, template_type, template_data, country) SELECT $1, $2::template_types, $3, CASE WHEN pg_has_role('sys_admin', 'MEMBER') THEN NULL ELSE users.current_user_country() END` updatePrintTemplateSQL = ` UPDATE user.templates template_data = $2 WHERE template_name = $1 AND template_type = $2::template_types` ) var templateTypes = []string{"map", "diagram", "report"} func listPrintTemplates( _ interface{}, req *http.Request, conn *sql.Conn, ) (jr JSONResult, err error) { ts := mux.Vars(req)["type"] if ts == "" { if ts = req.FormValue("types"); ts == "" { ts = strings.Join(templateTypes, ",") } } types := toTextArray(ts, templateTypes) filter := buildFilterTerm("template_type = ANY($%d) ", types) var stmt strings.Builder var args []interface{} stmt.WriteString(listPrintTemplatesSQL) filter.serialize(&stmt, &args) stmt.WriteString(" ORDER BY date_info DESC") var rows *sql.Rows if rows, err = conn.QueryContext(req.Context(), stmt.String(), args...); err != nil { return } defer rows.Close() type template struct { Name string `json:"name"` Type string `json:"type"` Time models.Time `json:"time"` Country *string `json:"country,omitempty"` } templates := []*template{} for rows.Next() { var tmpl template var w time.Time var country sql.NullString if err = rows.Scan( &tmpl.Name, &tmpl.Type, &w, &country, ); err != nil { return } tmpl.Time = models.Time{Time: w} if country.Valid { tmpl.Country = &country.String } templates = append(templates, &tmpl) } jr = JSONResult{Result: templates} return } func fetchPrintTemplate( _ interface{}, req *http.Request, conn *sql.Conn, ) (jr JSONResult, err error) { vars := mux.Vars(req) name, typ := vars["name"], vars["type"] ctx := req.Context() var data pgtype.Bytea err = conn.QueryRowContext(ctx, selectPrintTemplateSQL, name, typ).Scan(&data) switch { case err == sql.ErrNoRows: err = JSONError{ Code: http.StatusNotFound, Message: "No such template found", } return case err != nil: return case data.Status != pgtype.Present: err = JSONError{ Code: http.StatusInternalServerError, Message: "Unexpected return value from database query", } return } jr = JSONResult{Result: bytes.NewReader(data.Bytes)} return } func createPrintTemplate( input interface{}, req *http.Request, conn *sql.Conn, ) (jr JSONResult, err error) { vars := mux.Vars(req) name, typ := vars["name"], vars["type"] in := input.(*json.RawMessage) if name == "" { err = JSONError{ Code: http.StatusBadRequest, Message: "Template must have a none empty name", } return } if len(*in) == 0 { err = JSONError{ Code: http.StatusBadRequest, Message: "Template must have a none empty template", } return } ctx := req.Context() var tx *sql.Tx if tx, err = conn.BeginTx(ctx, nil); err != nil { return } defer tx.Rollback() var dummy bool err = tx.QueryRowContext(ctx, hasPrintTemplateSQL, name, typ).Scan(&dummy) switch { case err == sql.ErrNoRows: // This is fine. case err != nil: return default: err = JSONError{ Code: http.StatusBadRequest, Message: "A template with this name already exists", } return } data := pgtype.Bytea{Bytes: *in, Status: pgtype.Present} if _, err = tx.ExecContext(ctx, insertPrintTemplateSQL, name, typ, &data); err != nil { return } if err = tx.Commit(); err != nil { return } jr = JSONResult{ Code: http.StatusCreated, Result: map[string]string{ "created": name, }, } return } func deletePrintTemplate( _ interface{}, req *http.Request, conn *sql.Conn, ) (jr JSONResult, err error) { vars := mux.Vars(req) name, typ := vars["name"], vars["type"] ctx := req.Context() var tx *sql.Tx if tx, err = conn.BeginTx(ctx, nil); err != nil { return } defer tx.Rollback() var dummy bool err = tx.QueryRowContext(ctx, hasPrintTemplateSQL, name, typ).Scan(&dummy) switch { case err == sql.ErrNoRows: err = JSONError{ Code: http.StatusNotFound, Message: "No such template found", } return case err != nil: return case !dummy: err = JSONError{ Code: http.StatusInternalServerError, Message: "Unexpected return value from database query", } return } if _, err = tx.ExecContext(ctx, deletePrintTemplateSQL, name, typ); err != nil { return } if err = tx.Commit(); err != nil { return } jr = JSONResult{ Result: map[string]string{ "deleted": name, }, } return } func updatePrintTemplate( input interface{}, req *http.Request, conn *sql.Conn, ) (jr JSONResult, err error) { vars := mux.Vars(req) name, typ := vars["name"], vars["type"] in := input.(*json.RawMessage) if name == "" { err = JSONError{ Code: http.StatusBadRequest, Message: "Template must have a none empty name", } return } if len(*in) == 0 { err = JSONError{ Code: http.StatusBadRequest, Message: "Template must have a none empty template", } return } ctx := req.Context() var tx *sql.Tx if tx, err = conn.BeginTx(ctx, nil); err != nil { return } defer tx.Rollback() var dummy bool err = tx.QueryRowContext(ctx, hasPrintTemplateSQL, name, typ).Scan(&dummy) switch { case err == sql.ErrNoRows: err = JSONError{ Code: http.StatusNotFound, Message: "No such template found", } return case err != nil: return case !dummy: err = JSONError{ Code: http.StatusInternalServerError, Message: "Unexpected return value from database query", } return } data := pgtype.Bytea{Bytes: *in, Status: pgtype.Present} if _, err = tx.ExecContext(ctx, updatePrintTemplateSQL, name, typ, &data); err != nil { return } if err = tx.Commit(); err != nil { return } jr = JSONResult{ Code: http.StatusOK, Result: map[string]string{ "updated": name, }, } return }